#870D1B

Closest named color: Dark Red (#8B0000). oklch(40% 0.153 23.4), rgb(135, 13, 27).

Aa

White text reads best on this color (9.98:1).

About this color

#870D1B is a dark, vivid red. In OKLCH its lightness is 40%, its chroma 0.153 and its hue 23°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Red (#8B0000), ΔE 0.020 away. White text reads best on it, at 9.98:1.

Hue familyReds
Lightnessdark (40%)
Chromavivid (0.153)
Temperaturewarm
Nearest nameDark Red (#8B0000)
Black text2.10:1
White text9.98:1

Values

HEX#870D1B
RGBrgb(135, 13, 27)
HSLhsl(353, 82%, 29%)
OKLCHoklch(40% 0.153 23.4)

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 #870D1B 9.98:1 AAA Lc -95.7 Preferred for body text
Black text on #870D1B 2.10:1 Fails Lc 12.6 Not readable
#870D1B text on white 9.98:1 AAA Lc 91.3 Preferred for body text
#870D1B text on black 2.10:1 Fails Lc -11.0 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

    #FFF2F1

    oklch(97.1% 0.014 22.8)

  2. Step 100

    100

    #FFE2E0

    oklch(93.6% 0.032 22.5)

  3. Step 200

    200

    #FFCAC6

    oklch(88.4% 0.061 23.4)

  4. Step 300

    300

    #FFA59F

    oklch(81% 0.108 23.9)

  5. Step 400

    400

    #FE6968

    oklch(70.7% 0.183 23.3)

  6. Step 500

    500

    #F72B3E

    oklch(63.1% 0.234 23.3)

  7. Step 600

    600

    #D8002A

    oklch(55.6% 0.225 23.5)

  8. Step 700

    700

    #B70022

    oklch(49.2% 0.199 23.5)

  9. Step 800

    800

    #97001B

    oklch(42.7% 0.172 23.3)

  10. Step 900

    900 (this color)

    #870D1B

    oklch(40% 0.153 23.4)

  11. Step 950

    950

    #4B080D

    oklch(26.9% 0.097 23.4)

Export this scale for Tailwind in the Tailwind colors tool

#870D1B 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)#38321A0.167
Deuteranopia (no green cones)#554B160.152
Tritanopia (no blue cones)#9500150.029
Achromatopsia (no color)#4242420.154

Harmonies

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

Complementary

The opposite hue (180°).

  • #870D1B

    #870D1B

    oklch(40% 0.153 23.4)

  • #005258

    #005258

    oklch(40% 0.068 203.3)

Open the complementary palette in the generator

Analogous

Neighbouring hues, 30° either side.

  • #870D1B

    #870D1B

    oklch(40% 0.153 23.4)

  • #7F104E

    #7F104E

    oklch(39.9% 0.152 353.2)

  • #703500

    #703500

    oklch(40% 0.101 53.4)

Open the analogous palette in the generator

Split complementary

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

  • #870D1B

    #870D1B

    oklch(40% 0.153 23.4)

  • #005544

    #005544

    oklch(40.1% 0.077 173.2)

  • #004E6D

    #004E6D

    oklch(39.9% 0.083 233.7)

Open the split complementary palette in the generator

Triadic

Three hues spaced 120° apart.

  • #870D1B

    #870D1B

    oklch(40% 0.153 23.4)

  • #005808

    #005808

    oklch(39.9% 0.132 143.4)

  • #183F98

    #183F98

    oklch(40% 0.153 263.3)

Open the triadic palette in the generator

Square

Four hues spaced 90° apart.

  • #870D1B

    #870D1B

    oklch(40% 0.153 23.4)

  • #484C00

    #484C00

    oklch(39.9% 0.089 113.2)

  • #005258

    #005258

    oklch(40% 0.068 203.3)

  • #4E2E90

    #4E2E90

    oklch(39.9% 0.153 293.2)

Open the square palette in the generator

Palettes with this color

Curated palettes that contain a color within ΔE 0.04 (OKLab) of #870D1B, closest first.

Similar named colors

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

Use #870D1B 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.