#638D41
Closest named color: Moss Green (#658B38). oklch(59.5% 0.116 132.8), rgb(99, 141, 65).
Aa
Black text reads best on this color (5.41:1).
About this color
#638D41 is a medium-dark, moderately saturated green. In OKLCH its lightness is 59%, its chroma 0.116 and its hue 133°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Moss Green (#658B38), ΔE 0.009 away. Black text reads best on it, at 5.41:1.
| Hue family | Greens |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.116) |
| Temperature | in between |
| Nearest name | Moss Green (#658B38) |
| Black text | 5.41:1 |
| White text | 3.87:1 |
Values
| HEX | #638D41 |
| RGB | rgb(99, 141, 65) |
| HSL | hsl(93, 37%, 40%) |
| OKLCH | oklch(59.5% 0.116 132.8) |
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 #638D41 | 3.87:1 | AA large text | Lc -71.6 | Content text, not long reading |
| Black text on #638D41 | 5.41:1 | AA | Lc 38.0 | Non-text elements, placeholder text |
| #638D41 text on white | 3.87:1 | AA large text | Lc 66.1 | Content text, not long reading |
| #638D41 text on black | 5.41:1 | AA | Lc -35.5 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F3F7F1
oklch(97.1% 0.009 134.9)
-
Step 100
100
#E6ECE1
oklch(93.5% 0.016 130.4)
-
Step 200
200
#D1DEC9
oklch(88.5% 0.032 133.3)
-
Step 300
300
#B3C9A4
oklch(80.9% 0.056 132.7)
-
Step 400
400
#8BAD72
oklch(70.7% 0.09 132.7)
-
Step 500
500 (this color)
#638D41
oklch(59.5% 0.116 132.8)
-
Step 600
600
#55822D
oklch(55.5% 0.126 132.8)
-
Step 700
700
#456E20
oklch(49.1% 0.117 133)
-
Step 800
800
#395A1C
oklch(42.8% 0.098 133)
-
Step 900
900
#314A1D
oklch(37.7% 0.076 133.1)
-
Step 950
950
#1D2B12
oklch(26.9% 0.047 132.8)
#638D41 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) | #92843A | 0.067 |
| Deuteranopia (no green cones) | #8C8046 | 0.068 |
| Tritanopia (no blue cones) | #64887C | 0.086 |
| Achromatopsia (no color) | #818181 | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #638D41
#638D41
oklch(59.5% 0.116 132.8)
- #9669B0
#9669B0
oklch(59.5% 0.116 312.4)
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 #638D41, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Moss Green #658B38 ΔE 0.009
- Fern Green #548D44 ΔE 0.016
- Mossy Green #638B27 ΔE 0.023
- Khaki Green #728639 ΔE 0.025
- Light Forest Green #4F9153 ΔE 0.025
- Olive Drab #6B8E23 ΔE 0.027
- Swamp #698339 ΔE 0.028
- Sap Green #5C8B15 ΔE 0.036
Use #638D41 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.