#337E31
Closest named color: Tree Green (#2A7E19). oklch(52.8% 0.135 143), rgb(51, 126, 49).
Aa
White text reads best on this color (5.03:1).
About this color
#337E31 is a medium-dark, moderately saturated green. In OKLCH its lightness is 53%, its chroma 0.135 and its hue 143°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Tree Green (#2A7E19), ΔE 0.023 away. White text reads best on it, at 5.03:1.
| Hue family | Greens |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.135) |
| Temperature | in between |
| Nearest name | Tree Green (#2A7E19) |
| Black text | 4.16:1 |
| White text | 5.03:1 |
Values
| HEX | #337E31 |
| RGB | rgb(51, 126, 49) |
| HSL | hsl(118, 44%, 34%) |
| OKLCH | oklch(52.8% 0.135 143) |
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 #337E31 | 5.03:1 | AA | Lc -79.9 | Fine for body text |
| Black text on #337E31 | 4.16:1 | AA large text | Lc 29.6 | Dividers and decoration only |
| #337E31 text on white | 5.03:1 | AA | Lc 74.5 | Content text, not long reading |
| #337E31 text on black | 4.16:1 | AA large text | Lc -27.2 | Dividers and decoration only |
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
#F2F7F2
oklch(97.1% 0.008 145.5)
-
Step 100
100
#E3EDE2
oklch(93.6% 0.018 142.8)
-
Step 200
200
#CDDFCB
oklch(88.5% 0.033 142.5)
-
Step 300
300
#AACBA8
oklch(80.8% 0.06 143.5)
-
Step 400
400
#7CB079
oklch(70.6% 0.096 143.2)
-
Step 500
500
#599C55
oklch(63% 0.124 142.8)
-
Step 600
600 (this color)
#337E31
oklch(52.8% 0.135 143)
-
Step 700
700
#2D722C
oklch(49.1% 0.125 143.1)
-
Step 800
800
#275D25
oklch(42.8% 0.104 142.9)
-
Step 900
900
#254C23
oklch(37.6% 0.08 142.8)
-
Step 950
950
#162D15
oklch(27.1% 0.052 143.1)
#337E31 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) | #817329 | 0.098 |
| Deuteranopia (no green cones) | #776C37 | 0.098 |
| Tritanopia (no blue cones) | #277A6D | 0.086 |
| Achromatopsia (no color) | #6F6F6F | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #337E31
#337E31
oklch(52.8% 0.135 143)
- #8F4D98
#8F4D98
oklch(52.8% 0.134 322.7)
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 #337E31, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Tree Green #2A7E19 ΔE 0.023
- Jungle Green #048243 ΔE 0.023
- Dark Grass Green #388004 ΔE 0.030
- Green #008000 ΔE 0.043
- Forest Green #228B22 ΔE 0.045
- Sea Green #2E8B57 ΔE 0.051
- Olive Green #677A04 ΔE 0.055
- Emerald Green #028F1E ΔE 0.059
Use #337E31 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.