#638728
Closest named color: Mossy Green (#638B27). oklch(57.7% 0.129 127.9), rgb(99, 135, 40).
Aa
Black text reads best on this color (5.02:1).
About this color
#638728 is a medium-dark, moderately saturated green. In OKLCH its lightness is 58%, its chroma 0.129 and its hue 128°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Mossy Green (#638B27), ΔE 0.012 away. Black text reads best on it, at 5.02:1.
| Hue family | Greens |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.129) |
| Temperature | in between |
| Nearest name | Mossy Green (#638B27) |
| Black text | 5.02:1 |
| White text | 4.17:1 |
Values
| HEX | #638728 |
| RGB | rgb(99, 135, 40) |
| HSL | hsl(83, 54%, 34%) |
| OKLCH | oklch(57.7% 0.129 127.9) |
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 #638728 | 4.17:1 | AA large text | Lc -74.1 | Content text, not long reading |
| Black text on #638728 | 5.02:1 | AA | Lc 35.4 | Non-text elements, placeholder text |
| #638728 text on white | 4.17:1 | AA large text | Lc 68.6 | Content text, not long reading |
| #638728 text on black | 5.02:1 | AA | Lc -33.0 | 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
#F4F6F1
oklch(97% 0.007 124.4)
-
Step 100
100
#E6ECE0
oklch(93.5% 0.017 128.7)
-
Step 200
200
#D3DEC7
oklch(88.6% 0.033 128)
-
Step 300
300
#B6C8A0
oklch(80.9% 0.058 127.4)
-
Step 400
400
#90AC6C
oklch(70.7% 0.093 127.8)
-
Step 500
500
#759743
oklch(63.2% 0.119 127.8)
-
Step 600
600 (this color)
#638728
oklch(57.7% 0.129 127.9)
-
Step 700
700
#4D6D11
oklch(49.2% 0.12 127.9)
-
Step 800
800
#3F5913
oklch(42.8% 0.1 128.1)
-
Step 900
900
#364918
oklch(37.7% 0.077 127.6)
-
Step 950
950
#1F2B0F
oklch(27% 0.05 128.5)
#638728 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) | #8E7E1A | 0.063 |
| Deuteranopia (no green cones) | #897B30 | 0.065 |
| Tritanopia (no blue cones) | #678174 | 0.102 |
| Achromatopsia (no color) | #7C7C7C | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #638728
#638728
oklch(57.7% 0.129 127.9)
- #8E62B3
#8E62B3
oklch(57.6% 0.128 307.9)
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 #638728, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mossy Green #638B27 ΔE 0.012
- Moss Green #658B38 ΔE 0.016
- Sap Green #5C8B15 ΔE 0.021
- Swamp Green #748500 ΔE 0.024
- Swamp #698339 ΔE 0.024
- Olive Drab #6B8E23 ΔE 0.025
- Fern Green #548D44 ΔE 0.027
- Khaki Green #728639 ΔE 0.028
Use #638728 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.