#636631
Closest named color: Dark Moss Green (#606C38). oklch(49.5% 0.075 111.7), rgb(99, 102, 49).
Aa
White text reads best on this color (6.04:1).
About this color
#636631 is a medium-dark, moderately saturated brown. In OKLCH its lightness is 50%, its chroma 0.075 and its hue 112°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Moss Green (#606C38), ΔE 0.017 away. White text reads best on it, at 6.04:1.
| Hue family | Browns |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.075) |
| Temperature | in between |
| Nearest name | Dark Moss Green (#606C38) |
| Black text | 3.47:1 |
| White text | 6.04:1 |
Values
| HEX | #636631 |
| RGB | rgb(99, 102, 49) |
| HSL | hsl(63, 35%, 30%) |
| OKLCH | oklch(49.5% 0.075 111.7) |
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 #636631 | 6.04:1 | AA | Lc -85.3 | Fine for body text |
| Black text on #636631 | 3.47:1 | AA large text | Lc 23.9 | Dividers and decoration only |
| #636631 text on white | 6.04:1 | AA | Lc 80.2 | Fine for body text |
| #636631 text on black | 3.47:1 | AA large text | Lc -21.7 | 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 700.
-
Step 50
50
#F5F6F2
oklch(97.1% 0.005 117.9)
-
Step 100
100
#EAEBE3
oklch(93.7% 0.011 112.4)
-
Step 200
200
#D9DBCC
oklch(88.6% 0.02 113)
-
Step 300
300
#C1C3A9
oklch(80.9% 0.036 110.8)
-
Step 400
400
#A1A57B
oklch(70.8% 0.058 112.3)
-
Step 500
500
#8A8E59
oklch(63% 0.074 112)
-
Step 600
600
#75783E
oklch(55.6% 0.08 111.3)
-
Step 700
700 (this color)
#636631
oklch(49.5% 0.075 111.7)
-
Step 800
800
#505228
oklch(42.6% 0.062 111.2)
-
Step 900
900
#424425
oklch(37.6% 0.048 111.7)
-
Step 950
950
#272816
oklch(27% 0.031 111)
#636631 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) | #6D622C | 0.018 |
| Deuteranopia (no green cones) | #6D6334 | 0.019 |
| Tritanopia (no blue cones) | #69615A | 0.066 |
| Achromatopsia (no color) | #636363 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #636631
#636631
oklch(49.5% 0.075 111.7)
- #625A89
#625A89
oklch(49.5% 0.074 291.2)
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 #636631, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Moss Green #606C38 ΔE 0.017
- Dark Olive Green #556B2F ΔE 0.025
- Greeny Brown #696006 ΔE 0.030
- Camo Green #526525 ΔE 0.031
- Mud Green #606602 ΔE 0.035
- Mud #735C12 ΔE 0.037
- Brown Green #706C11 ΔE 0.039
- Browny Green #6F6C0A ΔE 0.041
Use #636631 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.