#257E3A
Closest named color: Jungle Green (#048243). oklch(52.5% 0.132 147.7), rgb(37, 126, 58).
Aa
White text reads best on this color (5.09:1).
About this color
#257E3A is a medium-dark, moderately saturated green. In OKLCH its lightness is 52%, its chroma 0.132 and its hue 148°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Jungle Green (#048243), ΔE 0.015 away. White text reads best on it, at 5.09:1.
| Hue family | Greens |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.132) |
| Temperature | in between |
| Nearest name | Jungle Green (#048243) |
| Black text | 4.12:1 |
| White text | 5.09:1 |
Values
| HEX | #257E3A |
| RGB | rgb(37, 126, 58) |
| HSL | hsl(134, 55%, 32%) |
| OKLCH | oklch(52.5% 0.132 147.7) |
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 #257E3A | 5.09:1 | AA | Lc -80.2 | Fine for body text |
| Black text on #257E3A | 4.12:1 | AA large text | Lc 29.3 | Dividers and decoration only |
| #257E3A text on white | 5.09:1 | AA | Lc 74.8 | Content text, not long reading |
| #257E3A text on black | 4.12:1 | AA large text | Lc -27.0 | 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
#E3EDE3
oklch(93.6% 0.017 145.4)
-
Step 200
200
#CBE0CD
oklch(88.6% 0.034 148)
-
Step 300
300
#A8CCAB
oklch(81% 0.06 147.3)
-
Step 400
400
#77B17E
oklch(70.7% 0.095 147.5)
-
Step 500
500
#519D5D
oklch(63.1% 0.122 147.5)
-
Step 600
600 (this color)
#257E3A
oklch(52.5% 0.132 147.7)
-
Step 700
700
#227335
oklch(49.2% 0.123 147.7)
-
Step 800
800
#1F5E2C
oklch(42.8% 0.103 147.5)
-
Step 900
900
#204D28
oklch(37.8% 0.08 147.6)
-
Step 950
950
#142D18
oklch(27% 0.05 147.7)
#257E3A 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) | #7F7334 | 0.104 |
| Deuteranopia (no green cones) | #756B3F | 0.104 |
| Tritanopia (no blue cones) | #007B6E | 0.077 |
| Achromatopsia (no color) | #6E6E6E | 0.133 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #257E3A
#257E3A
oklch(52.5% 0.132 147.7)
- #924B91
#924B91
oklch(52.6% 0.133 327.8)
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 #257E3A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jungle Green #048243 ΔE 0.015
- Tree Green #2A7E19 ΔE 0.029
- Dark Grass Green #388004 ΔE 0.039
- Green #008000 ΔE 0.047
- Sea Green #2E8B57 ΔE 0.049
- Forest Green #228B22 ΔE 0.051
- Emerald Green #028F1E ΔE 0.064
- Kelley Green #009337 ΔE 0.065
Use #257E3A 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.