#634A0B
Closest named color: Mud Brown (#60460F). oklch(42.5% 0.082 84.6), rgb(99, 74, 11).
Aa
White text reads best on this color (8.35:1).
About this color
#634A0B is a dark, moderately saturated brown. In OKLCH its lightness is 42%, its chroma 0.082 and its hue 85°. Its hue sits on the warm side of the wheel. The nearest named color is Mud Brown (#60460F), ΔE 0.014 away. White text reads best on it, at 8.35:1.
| Hue family | Browns |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.082) |
| Temperature | warm |
| Nearest name | Mud Brown (#60460F) |
| Black text | 2.51:1 |
| White text | 8.35:1 |
Values
| HEX | #634A0B |
| RGB | rgb(99, 74, 11) |
| HSL | hsl(43, 80%, 22%) |
| OKLCH | oklch(42.5% 0.082 84.6) |
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 #634A0B | 8.35:1 | AAA | Lc -93.2 | Preferred for body text |
| Black text on #634A0B | 2.51:1 | Fails | Lc 15.3 | Dividers and decoration only |
| #634A0B text on white | 8.35:1 | AAA | Lc 88.6 | Fine for body text |
| #634A0B text on black | 2.51:1 | Fails | Lc -13.5 | 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 800.
-
Step 50
50
#F7F5F1
oklch(97.1% 0.006 84.6)
-
Step 100
100
#EEE9E0
oklch(93.5% 0.013 82.4)
-
Step 200
200
#E1D8C6
oklch(88.5% 0.026 84.6)
-
Step 300
300
#CFBF9E
oklch(80.9% 0.048 85.2)
-
Step 400
400
#B79D68
oklch(70.7% 0.077 84.4)
-
Step 500
500
#A5843D
oklch(63% 0.098 84.3)
-
Step 600
600
#906D17
oklch(55.5% 0.106 84.3)
-
Step 700
700
#7B5B05
oklch(49.1% 0.099 84.1)
-
Step 800
800 (this color)
#634A0B
oklch(42.5% 0.082 84.6)
-
Step 900
900
#513F14
oklch(37.8% 0.064 85.8)
-
Step 950
950
#30250D
oklch(27.1% 0.041 84.7)
#634A0B 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) | #554A00 | 0.028 |
| Deuteranopia (no green cones) | #5B500F | 0.021 |
| Tritanopia (no blue cones) | #6C423F | 0.074 |
| Achromatopsia (no color) | #4E4E4E | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #634A0B
#634A0B
oklch(42.5% 0.082 84.6)
- #384D7B
#384D7B
oklch(42.5% 0.081 264.6)
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 #634A0B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud Brown #60460F ΔE 0.014
- Green Brown #544E03 ΔE 0.030
- Olive Brown #645403 ΔE 0.031
- Milk Chocolate #7F4E1E ΔE 0.058
- Medium Brown #7F5112 ΔE 0.059
- Mud #735C12 ΔE 0.061
- Army Green #4B5D16 ΔE 0.065
- Greeny Brown #696006 ΔE 0.067
Use #634A0B 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.