#399B24
Closest named color: Grass Green (#3F9B0B). oklch(60.9% 0.178 140.6), rgb(57, 155, 36).
Aa
Black text reads best on this color (5.88:1).
About this color
#399B24 is a medium-dark, vivid green. In OKLCH its lightness is 61%, its chroma 0.178 and its hue 141°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grass Green (#3F9B0B), ΔE 0.010 away. Black text reads best on it, at 5.88:1.
| Hue family | Greens |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.178) |
| Temperature | in between |
| Nearest name | Grass Green (#3F9B0B) |
| Black text | 5.88:1 |
| White text | 3.56:1 |
Values
| HEX | #399B24 |
| RGB | rgb(57, 155, 36) |
| HSL | hsl(109, 62%, 37%) |
| OKLCH | oklch(60.9% 0.178 140.6) |
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 #399B24 | 3.56:1 | AA large text | Lc -68.3 | Content text, not long reading |
| Black text on #399B24 | 5.88:1 | AA | Lc 41.2 | Non-text elements, placeholder text |
| #399B24 text on white | 3.56:1 | AA large text | Lc 62.8 | Content text, not long reading |
| #399B24 text on black | 5.88:1 | 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
#F1F8F0
oklch(97.2% 0.013 141.8)
-
Step 100
100
#E1EEDF
oklch(93.5% 0.024 141.5)
-
Step 200
200
#C9E2C4
oklch(88.6% 0.048 140.4)
-
Step 300
300
#A2CF9A
oklch(80.9% 0.087 140.8)
-
Step 400
400
#6DB660
oklch(70.8% 0.14 140.7)
-
Step 500
500 (this color)
#399B24
oklch(60.9% 0.178 140.6)
-
Step 600
600
#238B00
oklch(55.6% 0.181 140.6)
-
Step 700
700
#1C7500
oklch(49.2% 0.16 140.5)
-
Step 800
800
#156000
oklch(42.7% 0.139 140.6)
-
Step 900
900
#154F07
oklch(37.6% 0.116 140.6)
-
Step 950
950
#0F2F08
oklch(27.1% 0.074 140.3)
#399B24 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) | #9F8C09 | 0.121 |
| Deuteranopia (no green cones) | #938531 | 0.120 |
| Tritanopia (no blue cones) | #2A9684 | 0.118 |
| Achromatopsia (no color) | #888888 | 0.179 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #399B24
#399B24
oklch(60.9% 0.178 140.6)
- #B158C3
#B158C3
oklch(60.9% 0.178 320.7)
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 #399B24, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grass Green #3F9B0B ΔE 0.010
- Grassy Green #419C03 ΔE 0.014
- Irish Green #019529 ΔE 0.030
- True Green #089404 ΔE 0.035
- Kelley Green #009337 ΔE 0.038
- Kelly Green #02AB2E ΔE 0.045
- Emerald Green #028F1E ΔE 0.046
- Mid Green #50A747 ΔE 0.049
Use #399B24 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.