#636D40
Closest named color: Dark Moss Green (#606C38). oklch(51.5% 0.067 119), rgb(99, 109, 64).
Aa
White text reads best on this color (5.53:1).
About this color
#636D40 is a medium-dark, muted yellow. In OKLCH its lightness is 51%, its chroma 0.067 and its hue 119°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Moss Green (#606C38), ΔE 0.011 away. White text reads best on it, at 5.53:1.
| Hue family | Yellows |
| Lightness | medium-dark (51%) |
| Chroma | muted (0.067) |
| Temperature | in between |
| Nearest name | Dark Moss Green (#606C38) |
| Black text | 3.79:1 |
| White text | 5.53:1 |
Values
| HEX | #636D40 |
| RGB | rgb(99, 109, 64) |
| HSL | hsl(73, 26%, 34%) |
| OKLCH | oklch(51.5% 0.067 119) |
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 #636D40 | 5.53:1 | AA | Lc -82.9 | Fine for body text |
| Black text on #636D40 | 3.79:1 | AA large text | Lc 26.4 | Dividers and decoration only |
| #636D40 text on white | 5.53:1 | AA | Lc 77.6 | Fine for body text |
| #636D40 text on black | 3.79:1 | AA large text | Lc -24.1 | 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
#F5F6F3
oklch(97.2% 0.004 121.6)
-
Step 100
100
#E9EBE4
oklch(93.7% 0.01 119.6)
-
Step 200
200
#D7DBCE
oklch(88.5% 0.018 120.7)
-
Step 300
300
#BEC4AD
oklch(80.9% 0.032 119)
-
Step 400
400
#9DA681
oklch(70.8% 0.053 118.9)
-
Step 500
500
#858F62
oklch(63% 0.065 118.5)
-
Step 600
600
#6E7948
oklch(55.4% 0.071 119.1)
-
Step 700
700 (this color)
#636D40
oklch(51.5% 0.067 119)
-
Step 800
800
#4B5330
oklch(42.6% 0.055 119.3)
-
Step 900
900
#3F452A
oklch(37.7% 0.044 118.8)
-
Step 950
950
#252819
oklch(26.9% 0.027 117.4)
#636D40 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) | #72683D | 0.026 |
| Deuteranopia (no green cones) | #716942 | 0.025 |
| Tritanopia (no blue cones) | #676962 | 0.056 |
| Achromatopsia (no color) | #686868 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #636D40
#636D40
oklch(51.5% 0.067 119)
- #6D5F89
#6D5F89
oklch(51.5% 0.067 299.3)
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 #636D40, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Moss Green #606C38 ΔE 0.011
- Muddy Green #657432 ΔE 0.031
- Dark Olive Green #556B2F ΔE 0.031
- Brown Green #706C11 ΔE 0.042
- Browny Green #6F6C0A ΔE 0.045
- Camo Green #526525 ΔE 0.046
- Military Green #667C3E ΔE 0.047
- Mud Green #606602 ΔE 0.050
Use #636D40 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.