#642D1D
Closest named color: Chestnut (#742802). oklch(36.9% 0.084 37), rgb(100, 45, 29).
Aa
White text reads best on this color (10.85:1).
About this color
#642D1D is a dark, moderately saturated red. In OKLCH its lightness is 37%, its chroma 0.084 and its hue 37°. Its hue sits on the warm side of the wheel. The nearest named color is Chestnut (#742802), ΔE 0.037 away. White text reads best on it, at 10.85:1.
| Hue family | Reds |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.084) |
| Temperature | warm |
| Nearest name | Chestnut (#742802) |
| Black text | 1.93:1 |
| White text | 10.85:1 |
Values
| HEX | #642D1D |
| RGB | rgb(100, 45, 29) |
| HSL | hsl(14, 55%, 25%) |
| OKLCH | oklch(36.9% 0.084 37) |
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 #642D1D | 10.85:1 | AAA | Lc -98.6 | Preferred for body text |
| Black text on #642D1D | 1.93:1 | Fails | Lc 9.2 | Not readable |
| #642D1D text on white | 10.85:1 | AAA | Lc 94.7 | Preferred for body text |
| #642D1D text on black | 1.93:1 | Fails | Lc -7.9 | 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
#FBF4F1
oklch(97.2% 0.009 44.9)
-
Step 100
100
#F6E6E1
oklch(93.6% 0.019 38.1)
-
Step 200
200
#EFD2C9
oklch(88.6% 0.035 38)
-
Step 300
300
#E6B3A4
oklch(80.9% 0.063 37)
-
Step 400
400
#D78A73
oklch(70.7% 0.101 37.4)
-
Step 500
500
#CA6A4E
oklch(63% 0.129 37.1)
-
Step 600
600
#B65032
oklch(55.7% 0.14 37)
-
Step 700
700
#9C4024
oklch(49.1% 0.13 37.3)
-
Step 800
800
#7F3520
oklch(42.7% 0.108 36.6)
-
Step 900
900 (this color)
#642D1D
oklch(36.9% 0.084 37)
-
Step 950
950
#3C1C13
oklch(26.9% 0.053 36.6)
#642D1D 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) | #3C361B | 0.082 |
| Deuteranopia (no green cones) | #49421C | 0.077 |
| Tritanopia (no blue cones) | #6E2229 | 0.038 |
| Achromatopsia (no color) | #3D3D3D | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #642D1D
#642D1D
oklch(36.9% 0.084 37)
- #004856
#004856
oklch(37% 0.066 216.3)
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 #642D1D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chestnut #742802 ΔE 0.037
- Reddy Brown #6E1005 ΔE 0.051
- Purple Brown #673A3F ΔE 0.051
- Blood #770001 ΔE 0.065
- Claret #680018 ΔE 0.071
- Maroon #800000 ΔE 0.073
- Wine Red #7B0323 ΔE 0.074
- Mud Brown #60460F ΔE 0.075
Use #642D1D 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.