#257F31
Closest named color: Tree Green (#2A7E19). oklch(52.6% 0.142 145.3), rgb(37, 127, 49).
Aa
White text reads best on this color (5.04:1).
About this color
#257F31 is a medium-dark, vivid green. In OKLCH its lightness is 53%, its chroma 0.142 and its hue 145°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Tree Green (#2A7E19), ΔE 0.019 away. White text reads best on it, at 5.04:1.
| Hue family | Greens |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.142) |
| Temperature | in between |
| Nearest name | Tree Green (#2A7E19) |
| Black text | 4.15:1 |
| White text | 5.04:1 |
Values
| HEX | #257F31 |
| RGB | rgb(37, 127, 49) |
| HSL | hsl(128, 55%, 32%) |
| OKLCH | oklch(52.6% 0.142 145.3) |
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 #257F31 | 5.04:1 | AA | Lc -79.9 | Fine for body text |
| Black text on #257F31 | 4.15:1 | AA large text | Lc 29.6 | Dividers and decoration only |
| #257F31 text on white | 5.04:1 | AA | Lc 74.5 | Content text, not long reading |
| #257F31 text on black | 4.15:1 | 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
#CBE0CB
oklch(88.5% 0.036 145.3)
-
Step 300
300
#A7CCA8
oklch(80.9% 0.064 145.7)
-
Step 400
400
#77B279
oklch(70.8% 0.102 145.2)
-
Step 500
500
#509E56
oklch(63.1% 0.131 145.4)
-
Step 600
600 (this color)
#257F31
oklch(52.6% 0.142 145.3)
-
Step 700
700
#21732C
oklch(49% 0.132 145.3)
-
Step 800
800
#1E5E26
oklch(42.7% 0.109 145.5)
-
Step 900
900
#1F4D23
oklch(37.6% 0.086 145.3)
-
Step 950
950
#142D15
oklch(26.9% 0.053 144.7)
#257F31 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 | 0.107 |
| Deuteranopia (no green cones) | #766C37 | 0.106 |
| Tritanopia (no blue cones) | #057C6E | 0.086 |
| Achromatopsia (no color) | #6F6F6F | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #257F31
#257F31
oklch(52.6% 0.142 145.3)
- #924997
#924997
oklch(52.6% 0.142 324.9)
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 #257F31, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Tree Green #2A7E19 ΔE 0.019
- Jungle Green #048243 ΔE 0.019
- Dark Grass Green #388004 ΔE 0.029
- Green #008000 ΔE 0.036
- Forest Green #228B22 ΔE 0.042
- Sea Green #2E8B57 ΔE 0.053
- Emerald Green #028F1E ΔE 0.055
- Kelley Green #009337 ΔE 0.059
Use #257F31 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.