#643000
Closest named color: Chestnut (#742802). oklch(37.2% 0.092 54.8), rgb(100, 48, 0).
Aa
White text reads best on this color (10.68:1).
About this color
#643000 is a dark, moderately saturated brown. In OKLCH its lightness is 37%, its chroma 0.092 and its hue 55°. Its hue sits on the warm side of the wheel. The nearest named color is Chestnut (#742802), ΔE 0.036 away. White text reads best on it, at 10.68:1.
| Hue family | Browns |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.092) |
| Temperature | warm |
| Nearest name | Chestnut (#742802) |
| Black text | 1.96:1 |
| White text | 10.68:1 |
Values
| HEX | #643000 |
| RGB | rgb(100, 48, 0) |
| HSL | hsl(29, 100%, 20%) |
| OKLCH | oklch(37.2% 0.092 54.8) |
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 #643000 | 10.68:1 | AAA | Lc -98.3 | Preferred for body text |
| Black text on #643000 | 1.96:1 | Fails | Lc 9.6 | Not readable |
| #643000 text on white | 10.68:1 | AAA | Lc 94.3 | Preferred for body text |
| #643000 text on black | 1.96:1 | Fails | Lc -8.3 | 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
#FBF4F0
oklch(97.1% 0.009 52.1)
-
Step 100
100
#F5E7DE
oklch(93.7% 0.02 55.1)
-
Step 200
200
#EED3C2
oklch(88.5% 0.038 54.3)
-
Step 300
300
#E5B596
oklch(80.9% 0.07 54.3)
-
Step 400
400
#D68D5B
oklch(70.7% 0.111 54.3)
-
Step 500
500
#C96E24
oklch(63% 0.142 54.5)
-
Step 600
600
#AF5900
oklch(55.7% 0.138 55)
-
Step 700
700
#934A00
oklch(49.1% 0.121 55.1)
-
Step 800
800
#7A3C00
oklch(42.8% 0.106 54.9)
-
Step 900
900 (this color)
#643000
oklch(37.2% 0.092 54.8)
-
Step 950
950
#3C1D06
oklch(26.9% 0.059 53.7)
#643000 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) | #403700 | 0.074 |
| Deuteranopia (no green cones) | #4C4300 | 0.068 |
| Tritanopia (no blue cones) | #6F2428 | 0.060 |
| Achromatopsia (no color) | #3E3E3E | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #643000
#643000
oklch(37.2% 0.092 54.8)
- #004663
#004663
oklch(37.2% 0.078 234.3)
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 #643000, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chestnut #742802 ΔE 0.036
- Mud Brown #60460F ΔE 0.058
- Reddy Brown #6E1005 ΔE 0.063
- Purple Brown #673A3F ΔE 0.070
- Blood #770001 ΔE 0.077
- Maroon #800000 ΔE 0.082
- Rust Brown #8B3103 ΔE 0.083
- Red Brown #8B2E16 ΔE 0.085
Use #643000 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.