#257D5B
Closest named color: Jungle Green (#048243). oklch(52.9% 0.099 163.3), rgb(37, 125, 91).
Aa
White text reads best on this color (5.04:1).
About this color
#257D5B is a medium-dark, moderately saturated green. In OKLCH its lightness is 53%, its chroma 0.099 and its hue 163°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Jungle Green (#048243), ΔE 0.044 away. White text reads best on it, at 5.04:1.
| Hue family | Greens |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.099) |
| Temperature | in between |
| Nearest name | Jungle Green (#048243) |
| Black text | 4.16:1 |
| White text | 5.04:1 |
Values
| HEX | #257D5B |
| RGB | rgb(37, 125, 91) |
| HSL | hsl(157, 54%, 32%) |
| OKLCH | oklch(52.9% 0.099 163.3) |
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 #257D5B | 5.04:1 | AA | Lc -79.9 | Fine for body text |
| Black text on #257D5B | 4.16:1 | AA large text | Lc 29.5 | Dividers and decoration only |
| #257D5B text on white | 5.04:1 | AA | Lc 74.5 | Content text, not long reading |
| #257D5B 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
#F2F7F4
oklch(97.2% 0.007 160.1)
-
Step 100
100
#E3EDE7
oklch(93.7% 0.013 159.9)
-
Step 200
200
#CBDFD4
oklch(88.6% 0.026 161.9)
-
Step 300
300
#A7CAB9
oklch(80.9% 0.044 164.3)
-
Step 400
400
#77AF94
oklch(70.7% 0.071 163)
-
Step 500
500
#509B7A
oklch(63.2% 0.091 163.3)
-
Step 600
600 (this color)
#257D5B
oklch(52.9% 0.099 163.3)
-
Step 700
700
#207152
oklch(49.2% 0.092 163.4)
-
Step 800
800
#1E5C43
oklch(42.8% 0.076 163.1)
-
Step 900
900
#1F4B39
oklch(37.6% 0.058 164.3)
-
Step 950
950
#132C21
oklch(26.9% 0.038 163.5)
#257D5B 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) | #7B7459 | 0.096 |
| Deuteranopia (no green cones) | #6F6B5D | 0.093 |
| Tritanopia (no blue cones) | #007D74 | 0.038 |
| Achromatopsia (no color) | #6F6F6F | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #257D5B
#257D5B
oklch(52.9% 0.099 163.3)
- #93537A
#93537A
oklch(52.9% 0.099 343.7)
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 #257D5B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jungle Green #048243 ΔE 0.044
- Sea Green #2E8B57 ΔE 0.047
- Bluegreen #017A79 ΔE 0.051
- Teal #008080 ΔE 0.054
- Dark Aquamarine #017371 ΔE 0.055
- Dark Sage #598556 ΔE 0.056
- Deep Turquoise #017374 ΔE 0.059
- Viridian #1E9167 ΔE 0.059
Use #257D5B 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.