#257A57
Closest named color: Jungle Green (#048243). oklch(51.9% 0.098 161.9), rgb(37, 122, 87).
Aa
White text reads best on this color (5.24:1).
About this color
#257A57 is a medium-dark, moderately saturated green. In OKLCH its lightness is 52%, its chroma 0.098 and its hue 162°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Jungle Green (#048243), ΔE 0.045 away. White text reads best on it, at 5.24:1.
| Hue family | Greens |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.098) |
| Temperature | in between |
| Nearest name | Jungle Green (#048243) |
| Black text | 4.00:1 |
| White text | 5.24:1 |
Values
| HEX | #257A57 |
| RGB | rgb(37, 122, 87) |
| HSL | hsl(155, 53%, 31%) |
| OKLCH | oklch(51.9% 0.098 161.9) |
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 #257A57 | 5.24:1 | AA | Lc -81.1 | Fine for body text |
| Black text on #257A57 | 4.00:1 | AA large text | Lc 28.3 | Dividers and decoration only |
| #257A57 text on white | 5.24:1 | AA | Lc 75.8 | Fine for body text |
| #257A57 text on black | 4.00:1 | AA large text | Lc -26.0 | 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 700.
-
Step 50
50
#F2F7F4
oklch(97.2% 0.007 160.1)
-
Step 100
100
#E2EDE7
oklch(93.6% 0.014 162.5)
-
Step 200
200
#CBDFD4
oklch(88.6% 0.026 161.9)
-
Step 300
300
#A6CBB7
oklch(81% 0.048 161.5)
-
Step 400
400
#74B092
oklch(70.7% 0.077 161.9)
-
Step 500
500
#4C9C77
oklch(63.2% 0.098 161.7)
-
Step 600
600
#298660
oklch(55.6% 0.105 162)
-
Step 700
700 (this color)
#257A57
oklch(51.9% 0.098 161.9)
-
Step 800
800
#195D41
oklch(42.8% 0.082 161.7)
-
Step 900
900
#1D4C37
oklch(37.7% 0.063 161.7)
-
Step 950
950
#122D20
oklch(27.1% 0.041 160.9)
#257A57 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) | #787155 | 0.094 |
| Deuteranopia (no green cones) | #6D6959 | 0.091 |
| Tritanopia (no blue cones) | #007A71 | 0.040 |
| Achromatopsia (no color) | #6C6C6C | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #257A57
#257A57
oklch(51.9% 0.098 161.9)
- #8F5179
#8F5179
oklch(52.1% 0.098 341.9)
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 #257A57, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jungle Green #048243 ΔE 0.045
- Bluegreen #017A79 ΔE 0.052
- Dark Aquamarine #017371 ΔE 0.053
- Sea Green #2E8B57 ΔE 0.055
- Deep Turquoise #017374 ΔE 0.057
- Teal #008080 ΔE 0.059
- Dark Sage #598556 ΔE 0.062
- Dark Olive Green #556B2F ΔE 0.063
Use #257A57 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.