#637239
Closest named color: Muddy Green (#657432). oklch(52.6% 0.083 121.4), rgb(99, 114, 57).
Aa
White text reads best on this color (5.25:1).
About this color
#637239 is a medium-dark, moderately saturated yellow. In OKLCH its lightness is 53%, its chroma 0.083 and its hue 121°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Muddy Green (#657432), ΔE 0.011 away. White text reads best on it, at 5.25:1.
| Hue family | Yellows |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.083) |
| Temperature | in between |
| Nearest name | Muddy Green (#657432) |
| Black text | 3.99:1 |
| White text | 5.25:1 |
Values
| HEX | #637239 |
| RGB | rgb(99, 114, 57) |
| HSL | hsl(76, 33%, 34%) |
| OKLCH | oklch(52.6% 0.083 121.4) |
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 #637239 | 5.25:1 | AA | Lc -81.4 | Fine for body text |
| Black text on #637239 | 3.99:1 | AA large text | Lc 28.0 | Dividers and decoration only |
| #637239 text on white | 5.25:1 | AA | Lc 76.1 | Fine for body text |
| #637239 text on black | 3.99:1 | AA large text | Lc -25.7 | 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 600.
-
Step 50
50
#F5F6F2
oklch(97.1% 0.005 117.9)
-
Step 100
100
#E8EBE3
oklch(93.6% 0.011 123.5)
-
Step 200
200
#D7DBCD
oklch(88.4% 0.019 119.8)
-
Step 300
300
#BCC5AA
oklch(80.9% 0.038 122.3)
-
Step 400
400
#9AA77D
oklch(70.7% 0.06 121.9)
-
Step 500
500
#82915C
oklch(63.1% 0.076 121.5)
-
Step 600
600 (this color)
#637239
oklch(52.6% 0.083 121.4)
-
Step 700
700
#5A6733
oklch(49% 0.077 120.9)
-
Step 800
800
#49542B
oklch(42.6% 0.064 121.5)
-
Step 900
900
#3D4627
oklch(37.7% 0.05 122)
-
Step 950
950
#242917
oklch(27% 0.032 121.2)
#637239 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) | #786C34 | 0.034 |
| Deuteranopia (no green cones) | #766C3C | 0.034 |
| Tritanopia (no blue cones) | #676D65 | 0.069 |
| Achromatopsia (no color) | #6C6C6C | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #637239
#637239
oklch(52.6% 0.083 121.4)
- #735F93
#735F93
oklch(52.6% 0.083 301.3)
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 #637239, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muddy Green #657432 ΔE 0.011
- Dark Moss Green #606C38 ΔE 0.019
- Military Green #667C3E ΔE 0.030
- Dark Olive Green #556B2F ΔE 0.032
- Brown Green #706C11 ΔE 0.033
- Browny Green #6F6C0A ΔE 0.035
- Murky Green #6C7A0E ΔE 0.047
- Mud Green #606602 ΔE 0.047
Use #637239 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.