#638C2C
Closest named color: Mossy Green (#638B27). oklch(59% 0.133 129.6), rgb(99, 140, 44).
Aa
Black text reads best on this color (5.31:1).
About this color
#638C2C is a medium-dark, moderately saturated green. In OKLCH its lightness is 59%, its chroma 0.133 and its hue 130°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Mossy Green (#638B27), ΔE 0.004 away. Black text reads best on it, at 5.31:1.
| Hue family | Greens |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.133) |
| Temperature | in between |
| Nearest name | Mossy Green (#638B27) |
| Black text | 5.31:1 |
| White text | 3.94:1 |
Values
| HEX | #638C2C |
| RGB | rgb(99, 140, 44) |
| HSL | hsl(86, 52%, 36%) |
| OKLCH | oklch(59% 0.133 129.6) |
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 #638C2C | 3.94:1 | AA large text | Lc -72.2 | Content text, not long reading |
| Black text on #638C2C | 5.31:1 | AA | Lc 37.4 | Non-text elements, placeholder text |
| #638C2C text on white | 3.94:1 | AA large text | Lc 66.7 | Content text, not long reading |
| #638C2C text on black | 5.31:1 | AA | Lc -34.9 | 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 600.
-
Step 50
50
#F4F7F1
oklch(97.2% 0.009 128.6)
-
Step 100
100
#E6ECE0
oklch(93.5% 0.017 128.7)
-
Step 200
200
#D2DEC7
oklch(88.5% 0.034 129.7)
-
Step 300
300
#B4C9A0
oklch(80.9% 0.06 129.8)
-
Step 400
400
#8DAD6C
oklch(70.8% 0.096 129.9)
-
Step 500
500
#719843
oklch(63.2% 0.122 129.8)
-
Step 600
600 (this color)
#638C2C
oklch(59% 0.133 129.6)
-
Step 700
700
#496E10
oklch(49.2% 0.124 129.8)
-
Step 800
800
#3C5912
oklch(42.6% 0.102 129.6)
-
Step 900
900
#344A18
oklch(37.9% 0.08 129.6)
-
Step 950
950
#1E2B0F
oklch(26.9% 0.05 129.8)
#638C2C 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) | #93821F | 0.069 |
| Deuteranopia (no green cones) | #8D7F34 | 0.070 |
| Tritanopia (no blue cones) | #668679 | 0.104 |
| Achromatopsia (no color) | #808080 | 0.133 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #638C2C
#638C2C
oklch(59% 0.133 129.6)
- #9565B8
#9565B8
oklch(59.1% 0.132 309.6)
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 #638C2C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mossy Green #638B27 ΔE 0.004
- Moss Green #658B38 ΔE 0.013
- Olive Drab #6B8E23 ΔE 0.013
- Sap Green #5C8B15 ΔE 0.018
- Fern Green #548D44 ΔE 0.024
- Dark Yellow Green #728F02 ΔE 0.027
- Swamp Green #748500 ΔE 0.028
- Khaki Green #728639 ΔE 0.031
Use #638C2C 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.