#639620
Closest named color: Dark Yellow Green (#728F02). oklch(61.4% 0.154 130.8), rgb(99, 150, 32).
Aa
Black text reads best on this color (5.91:1).
About this color
#639620 is a medium-dark, vivid green. In OKLCH its lightness is 61%, its chroma 0.154 and its hue 131°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Yellow Green (#728F02), ΔE 0.023 away. Black text reads best on it, at 5.91:1.
| Hue family | Greens |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.154) |
| Temperature | in between |
| Nearest name | Dark Yellow Green (#728F02) |
| Black text | 5.91:1 |
| White text | 3.55:1 |
Values
| HEX | #639620 |
| RGB | rgb(99, 150, 32) |
| HSL | hsl(86, 65%, 36%) |
| OKLCH | oklch(61.4% 0.154 130.8) |
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 #639620 | 3.55:1 | AA large text | Lc -68.4 | Content text, not long reading |
| Black text on #639620 | 5.91:1 | AA | Lc 41.2 | Non-text elements, placeholder text |
| #639620 text on white | 3.55:1 | AA large text | Lc 62.9 | Content text, not long reading |
| #639620 text on black | 5.91:1 | AA | Lc -38.8 | 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
#F3F7F0
oklch(97.1% 0.01 131.4)
-
Step 100
100
#E5EDDE
oklch(93.6% 0.022 130)
-
Step 200
200
#D0DFC3
oklch(88.5% 0.041 130.3)
-
Step 300
300
#B0CB98
oklch(80.9% 0.075 130.6)
-
Step 400
400
#86B05D
oklch(70.7% 0.121 130.9)
-
Step 500
500 (this color)
#639620
oklch(61.4% 0.154 130.8)
-
Step 600
600
#538400
oklch(55.7% 0.152 130.8)
-
Step 700
700
#456F00
oklch(49.2% 0.134 130.8)
-
Step 800
800
#385B00
oklch(42.8% 0.116 130.7)
-
Step 900
900
#2E4C03
oklch(37.8% 0.101 131)
-
Step 950
950
#1B2C07
oklch(26.9% 0.063 130.8)
#639620 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) | #9D8A00 | 0.081 |
| Deuteranopia (no green cones) | #96872C | 0.082 |
| Tritanopia (no blue cones) | #658F80 | 0.118 |
| Achromatopsia (no color) | #888888 | 0.154 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #639620
#639620
oklch(61.4% 0.154 130.8)
- #A266C8
#A266C8
oklch(61.5% 0.154 310.9)
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 #639620, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Yellow Green #728F02 ΔE 0.023
- Olive Drab #6B8E23 ΔE 0.025
- Sap Green #5C8B15 ΔE 0.034
- Mossy Green #638B27 ΔE 0.034
- Grass Green #3F9B0B ΔE 0.039
- Grassy Green #419C03 ΔE 0.040
- Flat Green #699D4C ΔE 0.040
- Moss Green #658B38 ΔE 0.042
Use #639620 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.