#636738
Closest named color: Dark Moss Green (#606C38). oklch(49.9% 0.068 112.8), rgb(99, 103, 56).
Aa
White text reads best on this color (5.95:1).
About this color
#636738 is a medium-dark, muted brown. In OKLCH its lightness is 50%, its chroma 0.068 and its hue 113°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Moss Green (#606C38), ΔE 0.015 away. White text reads best on it, at 5.95:1.
| Hue family | Browns |
| Lightness | medium-dark (50%) |
| Chroma | muted (0.068) |
| Temperature | in between |
| Nearest name | Dark Moss Green (#606C38) |
| Black text | 3.52:1 |
| White text | 5.95:1 |
Values
| HEX | #636738 |
| RGB | rgb(99, 103, 56) |
| HSL | hsl(65, 30%, 31%) |
| OKLCH | oklch(49.9% 0.068 112.8) |
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 #636738 | 5.95:1 | AA | Lc -84.9 | Fine for body text |
| Black text on #636738 | 3.52:1 | AA large text | Lc 24.3 | Dividers and decoration only |
| #636738 text on white | 5.95:1 | AA | Lc 79.7 | Fine for body text |
| #636738 text on black | 3.52:1 | AA large text | Lc -22.1 | 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
#D9DBCD
oklch(88.6% 0.019 113.4)
-
Step 300
300
#C0C3AB
oklch(80.8% 0.033 112.9)
-
Step 400
400
#A0A47F
oklch(70.6% 0.052 112.7)
-
Step 500
500
#898E5E
oklch(63% 0.067 113.2)
-
Step 600
600
#737844
oklch(55.6% 0.074 113.3)
-
Step 700
700 (this color)
#636738
oklch(49.9% 0.068 112.8)
-
Step 800
800
#4F522D
oklch(42.6% 0.056 112.5)
-
Step 900
900
#424428
oklch(37.7% 0.044 111.8)
-
Step 950
950
#262818
oklch(27% 0.028 114.1)
#636738 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) | #6D6334 | 0.018 |
| Deuteranopia (no green cones) | #6D643A | 0.019 |
| Tritanopia (no blue cones) | #68625C | 0.060 |
| Achromatopsia (no color) | #646464 | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #636738
#636738
oklch(49.9% 0.068 112.8)
- #645C86
#645C86
oklch(49.9% 0.067 292.6)
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 #636738, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Moss Green #606C38 ΔE 0.015
- Dark Olive Green #556B2F ΔE 0.028
- Camo Green #526525 ΔE 0.036
- Greeny Brown #696006 ΔE 0.038
- Mud #735C12 ΔE 0.042
- Mud Green #606602 ΔE 0.042
- Muddy Green #657432 ΔE 0.042
- Brown Green #706C11 ΔE 0.043
Use #636738 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.