#634603
Closest named color: Mud Brown (#60460F). oklch(41.5% 0.084 81), rgb(99, 70, 3).
Aa
White text reads best on this color (8.72:1).
About this color
#634603 is a dark, moderately saturated brown. In OKLCH its lightness is 42%, its chroma 0.084 and its hue 81°. Its hue sits on the warm side of the wheel. The nearest named color is Mud Brown (#60460F), ΔE 0.008 away. White text reads best on it, at 8.72:1.
| Hue family | Browns |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.084) |
| Temperature | warm |
| Nearest name | Mud Brown (#60460F) |
| Black text | 2.40:1 |
| White text | 8.72:1 |
Values
| HEX | #634603 |
| RGB | rgb(99, 70, 3) |
| HSL | hsl(42, 94%, 20%) |
| OKLCH | oklch(41.5% 0.084 81) |
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 #634603 | 8.72:1 | AAA | Lc -94.2 | Preferred for body text |
| Black text on #634603 | 2.40:1 | Fails | Lc 14.3 | Not readable |
| #634603 text on white | 8.72:1 | AAA | Lc 89.7 | Fine for body text |
| #634603 text on black | 2.40:1 | Fails | Lc -12.6 | 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
#F8F5F1
oklch(97.1% 0.006 75.4)
-
Step 100
100
#EFE9DF
oklch(93.6% 0.015 80.7)
-
Step 200
200
#E3D8C5
oklch(88.6% 0.028 81.5)
-
Step 300
300
#D1BE9D
oklch(80.9% 0.049 81.4)
-
Step 400
400
#BA9C67
oklch(70.8% 0.079 81.1)
-
Step 500
500
#A9833B
oklch(63.2% 0.101 81.1)
-
Step 600
600
#946B11
oklch(55.6% 0.11 80.6)
-
Step 700
700
#7E5900
oklch(49% 0.101 80.5)
-
Step 800
800 (this color)
#634603
oklch(41.5% 0.084 81)
-
Step 900
900
#533D12
oklch(37.5% 0.066 80.8)
-
Step 950
950
#31240D
oklch(27% 0.041 79.8)
#634603 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) | #514700 | 0.034 |
| Deuteranopia (no green cones) | #584E07 | 0.029 |
| Tritanopia (no blue cones) | #6D3D3B | 0.075 |
| Achromatopsia (no color) | #4B4B4B | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #634603
#634603
oklch(41.5% 0.084 81)
- #314B79
#314B79
oklch(41.5% 0.084 261.1)
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 #634603, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud Brown #60460F ΔE 0.008
- Green Brown #544E03 ΔE 0.035
- Olive Brown #645403 ΔE 0.041
- Milk Chocolate #7F4E1E ΔE 0.063
- Medium Brown #7F5112 ΔE 0.065
- Mud #735C12 ΔE 0.071
- Army Green #4B5D16 ΔE 0.074
- Greeny Brown #696006 ΔE 0.077
Use #634603 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.