#641A21

Closest named color: Claret (#680018). oklch(34.2% 0.106 19.5), rgb(100, 26, 33).

Aa

White text reads best on this color (12.26:1).

About this color

#641A21 is a dark, moderately saturated red. In OKLCH its lightness is 34%, its chroma 0.106 and its hue 20°. Its hue sits on the warm side of the wheel. The nearest named color is Claret (#680018), ΔE 0.030 away. White text reads best on it, at 12.26:1.

Hue familyReds
Lightnessdark (34%)
Chromamoderately saturated (0.106)
Temperaturewarm
Nearest nameClaret (#680018)
Black text1.71:1
White text12.26:1

Values

HEX#641A21
RGBrgb(100, 26, 33)
HSLhsl(354, 59%, 25%)
OKLCHoklch(34.2% 0.106 19.5)

Contrast

WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.

PairWCAG 2ResultAPCAAPCA guidance
White text on #641A21 12.26:1 AAA Lc -100.7 Preferred for body text
Black text on #641A21 1.71:1 Fails Lc 0.0 Not readable
#641A21 text on white 12.26:1 AAA Lc 97.1 Preferred for body text
#641A21 text on black 1.71:1 Fails Lc 0.0 Not readable

Tints and shades

A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 900.

  1. Step 50

    50

    #FDF3F2

    oklch(97.2% 0.011 24.3)

  2. Step 100

    100

    #F9E4E4

    oklch(93.6% 0.023 17.6)

  3. Step 200

    200

    #F5CECD

    oklch(88.4% 0.044 19.8)

  4. Step 300

    300

    #F0ADAC

    oklch(81% 0.079 19.9)

  5. Step 400

    400

    #E57E80

    oklch(70.7% 0.127 19.6)

  6. Step 500

    500

    #DA5960

    oklch(63.2% 0.162 19.8)

  7. Step 600

    600

    #C53947

    oklch(55.6% 0.176 19.6)

  8. Step 700

    700

    #AA2A39

    oklch(49.2% 0.163 19.5)

  9. Step 800

    800

    #8A252F

    oklch(42.8% 0.135 19.7)

  10. Step 900

    900 (this color)

    #641A21

    oklch(34.2% 0.106 19.5)

  11. Step 950

    950

    #411619

    oklch(26.9% 0.067 18.6)

Export this scale for Tailwind in the Tailwind colors tool

#641A21 with color blindness

Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.

VisionSeen asShift (ΔE)
Protanopia (no red cones)#2E2B210.115
Deuteranopia (no green cones)#413B1F0.106
Tritanopia (no blue cones)#6E061D0.028
Achromatopsia (no color)#3535350.106

Harmonies

Hue rotations in OKLCH that keep this color's lightness and chroma.

Complementary

The opposite hue (180°).

  • #641A21

    #641A21

    oklch(34.2% 0.106 19.5)

  • #004144

    #004144

    oklch(34.1% 0.058 200)

Open the complementary palette in the generator

Analogous

Neighbouring hues, 30° either side.

  • #641A21

    #641A21

    oklch(34.2% 0.106 19.5)

  • #5E1B40

    #5E1B40

    oklch(34.2% 0.106 350.1)

  • #5C2700

    #5C2700

    oklch(34.2% 0.091 50)

Open the analogous palette in the generator

Split complementary

The two hues beside the complement (150° and 210°).

  • #641A21

    #641A21

    oklch(34.2% 0.106 19.5)

  • #004333

    #004333

    oklch(34.1% 0.067 170.5)

  • #003E54

    #003E54

    oklch(34.1% 0.068 229.6)

Open the split complementary palette in the generator

Triadic

Three hues spaced 120° apart.

  • #641A21

    #641A21

    oklch(34.2% 0.106 19.5)

  • #144403

    #144403

    oklch(34.1% 0.105 139.4)

  • #13366E

    #13366E

    oklch(34.2% 0.105 259.6)

Open the triadic palette in the generator

Square

Four hues spaced 90° apart.

  • #641A21

    #641A21

    oklch(34.2% 0.106 19.5)

  • #3B3B00

    #3B3B00

    oklch(34.1% 0.074 109.8)

  • #004144

    #004144

    oklch(34.1% 0.058 200)

  • #392B6A

    #392B6A

    oklch(34.1% 0.105 289.9)

Open the square palette in the generator

Palettes with this color

Curated palettes that contain a color within ΔE 0.04 (OKLab) of #641A21, closest first.

Similar named colors

The eight closest entries in our named color list, with their ΔE distance.

Use #641A21 in your product

Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.