#637629
Closest named color: Muddy Green (#657432). oklch(53.4% 0.105 121.8), rgb(99, 118, 41).
Aa
White text reads best on this color (5.05:1).
About this color
#637629 is a medium-dark, moderately saturated yellow. In OKLCH its lightness is 53%, its chroma 0.105 and its hue 122°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Muddy Green (#657432), ΔE 0.013 away. White text reads best on it, at 5.05:1.
| Hue family | Yellows |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.105) |
| Temperature | in between |
| Nearest name | Muddy Green (#657432) |
| Black text | 4.15:1 |
| White text | 5.05:1 |
Values
| HEX | #637629 |
| RGB | rgb(99, 118, 41) |
| HSL | hsl(75, 48%, 31%) |
| OKLCH | oklch(53.4% 0.105 121.8) |
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 #637629 | 5.05:1 | AA | Lc -80.2 | Fine for body text |
| Black text on #637629 | 4.15:1 | AA large text | Lc 29.2 | Dividers and decoration only |
| #637629 text on white | 5.05:1 | AA | Lc 74.8 | Content text, not long reading |
| #637629 text on black | 4.15:1 | AA large text | Lc -26.9 | 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
#E8EBE2
oklch(93.5% 0.012 121.7)
-
Step 200
200
#D6DCC9
oklch(88.5% 0.026 121.2)
-
Step 300
300
#BBC6A4
oklch(80.9% 0.048 122)
-
Step 400
400
#99A873
oklch(70.6% 0.075 121.2)
-
Step 500
500
#80934E
oklch(63.2% 0.097 121.8)
-
Step 600
600 (this color)
#637629
oklch(53.4% 0.105 121.8)
-
Step 700
700
#586923
oklch(49.1% 0.097 121.7)
-
Step 800
800
#48561E
oklch(42.8% 0.082 121.8)
-
Step 900
900
#3C471F
oklch(37.8% 0.063 122.2)
-
Step 950
950
#232913
oklch(26.8% 0.038 121.5)
#637629 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) | #7D6F20 | 0.041 |
| Deuteranopia (no green cones) | #7B6F2E | 0.042 |
| Tritanopia (no blue cones) | #687066 | 0.088 |
| Achromatopsia (no color) | #6F6F6F | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #637629
#637629
oklch(53.4% 0.105 121.8)
- #785D9F
#785D9F
oklch(53.3% 0.104 301.8)
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 #637629, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muddy Green #657432 ΔE 0.013
- Military Green #667C3E ΔE 0.025
- Murky Green #6C7A0E ΔE 0.025
- Olive Green #677A04 ΔE 0.026
- Browny Green #6F6C0A ΔE 0.031
- Brown Green #706C11 ΔE 0.031
- Dark Moss Green #606C38 ΔE 0.038
- Swamp #698339 ΔE 0.040
Use #637629 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.