#635637
Closest named color: Olive Brown (#645403). oklch(45.8% 0.049 87.7), rgb(99, 86, 55).
Aa
White text reads best on this color (7.19:1).
About this color
#635637 is a medium-dark, muted brown. In OKLCH its lightness is 46%, its chroma 0.049 and its hue 88°. Its hue sits on the warm side of the wheel. The nearest named color is Olive Brown (#645403), ΔE 0.044 away. White text reads best on it, at 7.19:1.
| Hue family | Browns |
| Lightness | medium-dark (46%) |
| Chroma | muted (0.049) |
| Temperature | warm |
| Nearest name | Olive Brown (#645403) |
| Black text | 2.91:1 |
| White text | 7.19:1 |
Values
| HEX | #635637 |
| RGB | rgb(99, 86, 55) |
| HSL | hsl(42, 29%, 30%) |
| OKLCH | oklch(45.8% 0.049 87.7) |
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 #635637 | 7.19:1 | AAA | Lc -89.9 | Fine for body text |
| Black text on #635637 | 2.91:1 | Fails | Lc 19.1 | Dividers and decoration only |
| #635637 text on white | 7.19:1 | AAA | Lc 85.0 | Fine for body text |
| #635637 text on black | 2.91:1 | Fails | Lc -17.0 | Dividers and decoration only |
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
#F6F5F3
oklch(97% 0.003 84.6)
-
Step 100
100
#ECEAE4
oklch(93.7% 0.008 91.5)
-
Step 200
200
#DDD9CE
oklch(88.5% 0.015 90.2)
-
Step 300
300
#C8C0AC
oklch(80.9% 0.029 88.8)
-
Step 400
400
#AD9F80
oklch(70.6% 0.046 86.6)
-
Step 500
500
#988860
oklch(63.1% 0.059 88.7)
-
Step 600
600
#837147
oklch(55.5% 0.063 87.2)
-
Step 700
700
#6F5F38
oklch(49.1% 0.06 87.9)
-
Step 800
800 (this color)
#635637
oklch(45.8% 0.049 87.7)
-
Step 900
900
#4A412A
oklch(37.8% 0.038 89)
-
Step 950
950
#2B2619
oklch(27% 0.024 89.4)
#635637 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) | #5D5535 | 0.011 |
| Deuteranopia (no green cones) | #605938 | 0.010 |
| Tritanopia (no blue cones) | #69514E | 0.044 |
| Achromatopsia (no color) | #575757 | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #635637
#635637
oklch(45.8% 0.049 87.7)
- #4B5773
#4B5773
oklch(45.8% 0.048 266.5)
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 #635637, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Olive Brown #645403 ΔE 0.044
- Mud #735C12 ΔE 0.051
- Milk Chocolate #7F4E1E ΔE 0.053
- Mud Brown #60460F ΔE 0.054
- Medium Brown #7F5112 ΔE 0.055
- Green Brown #544E03 ΔE 0.059
- Greeny Brown #696006 ΔE 0.059
- Camo Green #526525 ΔE 0.063
Use #635637 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.