#639813
Closest named color: Dark Yellow Green (#728F02). oklch(61.9% 0.162 130.5), rgb(99, 152, 19).
Aa
Black text reads best on this color (6.03:1).
About this color
#639813 is a medium-dark, vivid green. In OKLCH its lightness is 62%, its chroma 0.162 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 0.028 away. Black text reads best on it, at 6.03:1.
| Hue family | Greens |
| Lightness | medium-dark (62%) |
| Chroma | vivid (0.162) |
| Temperature | in between |
| Nearest name | Dark Yellow Green (#728F02) |
| Black text | 6.03:1 |
| White text | 3.48:1 |
Values
| HEX | #639813 |
| RGB | rgb(99, 152, 19) |
| HSL | hsl(84, 78%, 34%) |
| OKLCH | oklch(61.9% 0.162 130.5) |
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 #639813 | 3.48:1 | AA large text | Lc -67.6 | Content text, not long reading |
| Black text on #639813 | 6.03:1 | AA | Lc 41.9 | Non-text elements, placeholder text |
| #639813 text on white | 3.48:1 | AA large text | Lc 62.1 | Content text, not long reading |
| #639813 text on black | 6.03:1 | AA | Lc -39.6 | 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
#E5EDDD
oklch(93.6% 0.023 128.7)
-
Step 200
200
#CFE0C1
oklch(88.6% 0.045 130.9)
-
Step 300
300
#AFCC96
oklch(81% 0.08 131)
-
Step 400
400
#85B058
oklch(70.6% 0.126 130.5)
-
Step 500
500 (this color)
#639813
oklch(61.9% 0.162 130.5)
-
Step 600
600
#548400
oklch(55.7% 0.151 130.4)
-
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
#2E4C00
oklch(37.8% 0.103 130.7)
-
Step 950
950
#1B2D04
oklch(27.2% 0.068 130.5)
#639813 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) | #9F8C00 | 0.085 |
| Deuteranopia (no green cones) | #988825 | 0.086 |
| Tritanopia (no blue cones) | #659181 | 0.125 |
| Achromatopsia (no color) | #898989 | 0.162 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #639813
#639813
oklch(61.9% 0.162 130.5)
- #A465CD
#A465CD
oklch(61.8% 0.162 310.4)
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 #639813, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Yellow Green #728F02 ΔE 0.028
- Olive Drab #6B8E23 ΔE 0.033
- Grassy Green #419C03 ΔE 0.034
- Grass Green #3F9B0B ΔE 0.035
- Sap Green #5C8B15 ΔE 0.040
- Mossy Green #638B27 ΔE 0.042
- Flat Green #699D4C ΔE 0.044
- Mid Green #50A747 ΔE 0.046
Use #639813 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.