#64091B
Closest named color: Claret (#680018). oklch(32.5% 0.121 18.1), rgb(100, 9, 27).
Aa
White text reads best on this color (13.15:1).
About this color
#64091B is a dark, moderately saturated red. In OKLCH its lightness is 33%, its chroma 0.121 and its hue 18°. Its hue sits on the warm side of the wheel. The nearest named color is Claret (#680018), ΔE 0.010 away. White text reads best on it, at 13.15:1.
| Hue family | Reds |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.121) |
| Temperature | warm |
| Nearest name | Claret (#680018) |
| Black text | 1.59:1 |
| White text | 13.15:1 |
Values
| HEX | #64091B |
| RGB | rgb(100, 9, 27) |
| HSL | hsl(348, 83%, 21%) |
| OKLCH | oklch(32.5% 0.121 18.1) |
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.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #64091B | 13.15:1 | AAA | Lc -101.5 | Preferred for body text |
| Black text on #64091B | 1.59:1 | Fails | Lc 0.0 | Not readable |
| #64091B text on white | 13.15:1 | AAA | Lc 98.0 | Preferred for body text |
| #64091B text on black | 1.59:1 | 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.
-
Step 50
50
#FEF2F2
oklch(97.1% 0.013 17.4)
-
Step 100
100
#FBE3E3
oklch(93.5% 0.026 17.6)
-
Step 200
200
#F9CCCC
oklch(88.4% 0.051 18.2)
-
Step 300
300
#F6A9AA
oklch(80.9% 0.091 18.4)
-
Step 400
400
#ED777E
oklch(70.7% 0.146 17.8)
-
Step 500
500
#E34D5D
oklch(63.1% 0.185 18.1)
-
Step 600
600
#CF2443
oklch(55.6% 0.203 18.2)
-
Step 700
700
#B21235
oklch(49% 0.188 18.1)
-
Step 800
800
#91162C
oklch(42.7% 0.156 18.3)
-
Step 900
900 (this color)
#64091B
oklch(32.5% 0.121 18.1)
-
Step 950
950
#451318
oklch(27.1% 0.077 18.1)
#64091B 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.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #27241B | 0.134 |
| Deuteranopia (no green cones) | #3D3718 | 0.123 |
| Tritanopia (no blue cones) | #6F0011 | 0.026 |
| Achromatopsia (no color) | #303030 | 0.122 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64091B
#64091B
oklch(32.5% 0.121 18.1)
- #003D3E
#003D3E
oklch(32.6% 0.056 196.6)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #64091B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Claret #680018 ΔE 0.010
- Burgundy #610023 ΔE 0.021
- Reddy Brown #6E1005 ΔE 0.037
- Blood #770001 ΔE 0.048
- Wine Red #7B0323 ΔE 0.053
- Bordeaux #7B002C ΔE 0.056
- Merlot #730039 ΔE 0.058
- Maroon #800000 ΔE 0.067
Use #64091B 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.