#642D18
Closest named color: Chestnut (#742802). oklch(36.8% 0.086 40.7), rgb(100, 45, 24).
Aa
White text reads best on this color (10.87:1).
About this color
#642D18 is a dark, moderately saturated brown. In OKLCH its lightness is 37%, its chroma 0.086 and its hue 41°. Its hue sits on the warm side of the wheel. The nearest named color is Chestnut (#742802), ΔE 0.035 away. White text reads best on it, at 10.87:1.
| Hue family | Browns |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.086) |
| Temperature | warm |
| Nearest name | Chestnut (#742802) |
| Black text | 1.93:1 |
| White text | 10.87:1 |
Values
| HEX | #642D18 |
| RGB | rgb(100, 45, 24) |
| HSL | hsl(17, 61%, 24%) |
| OKLCH | oklch(36.8% 0.086 40.7) |
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 #642D18 | 10.87:1 | AAA | Lc -98.7 | Preferred for body text |
| Black text on #642D18 | 1.93:1 | Fails | Lc 9.2 | Not readable |
| #642D18 text on white | 10.87:1 | AAA | Lc 94.7 | Preferred for body text |
| #642D18 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
#EFD2C7
oklch(88.5% 0.036 41.9)
-
Step 300
300
#E6B3A1
oklch(80.8% 0.065 40.3)
-
Step 400
400
#D78A6E
oklch(70.6% 0.103 40.7)
-
Step 500
500
#CB6B47
oklch(63.2% 0.132 40.8)
-
Step 600
600
#B65027
oklch(55.6% 0.143 40.9)
-
Step 700
700
#9D401A
oklch(49.2% 0.134 40.6)
-
Step 800
800
#7F3518
oklch(42.6% 0.111 40.5)
-
Step 900
900 (this color)
#642D18
oklch(36.8% 0.086 40.7)
-
Step 950
950
#3C1C10
oklch(26.9% 0.054 40.9)
#642D18 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) | #3C3516 | 0.082 |
| Deuteranopia (no green cones) | #494217 | 0.077 |
| Tritanopia (no blue cones) | #6E2228 | 0.041 |
| Achromatopsia (no color) | #3D3D3D | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #642D18
#642D18
oklch(36.8% 0.086 40.7)
- #004758
#004758
oklch(36.8% 0.067 220.6)
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 #642D18, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chestnut #742802 ΔE 0.035
- Reddy Brown #6E1005 ΔE 0.051
- Purple Brown #673A3F ΔE 0.056
- Blood #770001 ΔE 0.066
- Mud Brown #60460F ΔE 0.072
- Maroon #800000 ΔE 0.073
- Claret #680018 ΔE 0.073
- Wine Red #7B0323 ΔE 0.076
Use #642D18 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.