#257E4C
Closest named color: Jungle Green (#048243). oklch(52.8% 0.115 154.4), rgb(37, 126, 76).
Aa
White text reads best on this color (5.03:1).
About this color
#257E4C is a medium-dark, moderately saturated green. In OKLCH its lightness is 53%, its chroma 0.115 and its hue 154°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Jungle Green (#048243), ΔE 0.023 away. White text reads best on it, at 5.03:1.
| Hue family | Greens |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.115) |
| Temperature | in between |
| Nearest name | Jungle Green (#048243) |
| Black text | 4.16:1 |
| White text | 5.03:1 |
Values
| HEX | #257E4C |
| RGB | rgb(37, 126, 76) |
| HSL | hsl(146, 55%, 32%) |
| OKLCH | oklch(52.8% 0.115 154.4) |
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 #257E4C | 5.03:1 | AA | Lc -79.9 | Fine for body text |
| Black text on #257E4C | 4.16:1 | AA large text | Lc 29.6 | Dividers and decoration only |
| #257E4C text on white | 5.03:1 | AA | Lc 74.5 | Content text, not long reading |
| #257E4C 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
#F2F7F3
oklch(97.1% 0.007 151.9)
-
Step 100
100
#E3EDE5
oklch(93.6% 0.015 151.8)
-
Step 200
200
#CBDFD1
oklch(88.5% 0.029 155.2)
-
Step 300
300
#A7CBB2
oklch(80.9% 0.052 154.8)
-
Step 400
400
#77B08A
oklch(70.7% 0.082 154.6)
-
Step 500
500
#509C6C
oklch(63.1% 0.105 154.3)
-
Step 600
600 (this color)
#257E4C
oklch(52.8% 0.115 154.4)
-
Step 700
700
#217244
oklch(49.1% 0.107 154.2)
-
Step 800
800
#1E5D38
oklch(42.8% 0.089 154.1)
-
Step 900
900
#1F4C31
oklch(37.7% 0.068 154.9)
-
Step 950
950
#132D1D
oklch(27.1% 0.044 155)
#257E4C 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) | #7E7449 | 0.101 |
| Deuteranopia (no green cones) | #736C4F | 0.099 |
| Tritanopia (no blue cones) | #007D71 | 0.056 |
| Achromatopsia (no color) | #6F6F6F | 0.115 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #257E4C
#257E4C
oklch(52.8% 0.115 154.4)
- #924F86
#924F86
oklch(52.7% 0.115 334.1)
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 #257E4C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jungle Green #048243 ΔE 0.023
- Sea Green #2E8B57 ΔE 0.041
- Tree Green #2A7E19 ΔE 0.052
- Dark Sage #598556 ΔE 0.056
- Viridian #1E9167 ΔE 0.059
- Dark Grass Green #388004 ΔE 0.061
- Military Green #667C3E ΔE 0.062
- Dark Olive Green #556B2F ΔE 0.064
Use #257E4C 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.