#637320
Closest named color: Muddy Green (#657432). oklch(52.5% 0.108 119.8), rgb(99, 115, 32).
Aa
White text reads best on this color (5.24:1).
About this color
#637320 is a medium-dark, moderately saturated yellow. In OKLCH its lightness is 53%, its chroma 0.108 and its hue 120°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Muddy Green (#657432), ΔE 0.017 away. White text reads best on it, at 5.24:1.
| Hue family | Yellows |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.108) |
| Temperature | in between |
| Nearest name | Muddy Green (#657432) |
| Black text | 4.00:1 |
| White text | 5.24:1 |
Values
| HEX | #637320 |
| RGB | rgb(99, 115, 32) |
| HSL | hsl(72, 56%, 29%) |
| OKLCH | oklch(52.5% 0.108 119.8) |
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 #637320 | 5.24:1 | AA | Lc -81.3 | Fine for body text |
| Black text on #637320 | 4.00:1 | AA large text | Lc 28.1 | Dividers and decoration only |
| #637320 text on white | 5.24:1 | AA | Lc 75.9 | Fine for body text |
| #637320 text on black | 4.00:1 | AA large text | Lc -25.8 | 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
#F5F6F1
oklch(97.1% 0.007 115.7)
-
Step 100
100
#E8EBE1
oklch(93.5% 0.014 120.3)
-
Step 200
200
#D7DCC8
oklch(88.5% 0.027 118.4)
-
Step 300
300
#BCC6A3
oklch(80.9% 0.049 120.5)
-
Step 400
400
#9AA871
oklch(70.7% 0.077 120)
-
Step 500
500
#82924A
oklch(63.1% 0.099 119.6)
-
Step 600
600 (this color)
#637320
oklch(52.5% 0.108 119.8)
-
Step 700
700
#5A691D
oklch(49.2% 0.101 119.9)
-
Step 800
800
#49551A
oklch(42.6% 0.083 119.9)
-
Step 900
900
#3D461C
oklch(37.5% 0.064 119.7)
-
Step 950
950
#242911
oklch(26.9% 0.041 118.9)
#637320 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) | #7B6C13 | 0.039 |
| Deuteranopia (no green cones) | #796C27 | 0.041 |
| Tritanopia (no blue cones) | #696D63 | 0.092 |
| Achromatopsia (no color) | #6C6C6C | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #637320
#637320
oklch(52.5% 0.108 119.8)
- #745B9F
#745B9F
oklch(52.6% 0.107 299.7)
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 #637320, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muddy Green #657432 ΔE 0.017
- Browny Green #6F6C0A ΔE 0.024
- Brown Green #706C11 ΔE 0.025
- Olive Green #677A04 ΔE 0.028
- Murky Green #6C7A0E ΔE 0.028
- Military Green #667C3E ΔE 0.034
- Dark Moss Green #606C38 ΔE 0.036
- Dark Olive Green #556B2F ΔE 0.037
Use #637320 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.