#257E56
Closest named color: Jungle Green (#048243). oklch(53% 0.105 159.7), rgb(37, 126, 86).
Aa
White text reads best on this color (5.00:1).
About this color
#257E56 is a medium-dark, moderately saturated green. In OKLCH its lightness is 53%, its chroma 0.105 and its hue 160°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Jungle Green (#048243), ΔE 0.035 away. White text reads best on it, at 5.00:1.
| Hue family | Greens |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.105) |
| Temperature | in between |
| Nearest name | Jungle Green (#048243) |
| Black text | 4.19:1 |
| White text | 5.00:1 |
Values
| HEX | #257E56 |
| RGB | rgb(37, 126, 86) |
| HSL | hsl(153, 55%, 32%) |
| OKLCH | oklch(53% 0.105 159.7) |
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 #257E56 | 5.00:1 | AA | Lc -79.7 | Fine for body text |
| Black text on #257E56 | 4.19:1 | AA large text | Lc 29.8 | Dividers and decoration only |
| #257E56 text on white | 5.00:1 | AA | Lc 74.3 | Content text, not long reading |
| #257E56 text on black | 4.19:1 | AA large text | Lc -27.4 | 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
#CBDFD3
oklch(88.5% 0.027 159.5)
-
Step 300
300
#A7CAB6
oklch(80.8% 0.047 160.1)
-
Step 400
400
#76AF90
oklch(70.6% 0.075 159.9)
-
Step 500
500
#509B75
oklch(63% 0.095 159.8)
-
Step 600
600 (this color)
#257E56
oklch(53% 0.105 159.7)
-
Step 700
700
#20714D
oklch(49% 0.097 159.9)
-
Step 800
800
#1D5C3F
oklch(42.6% 0.081 159.8)
-
Step 900
900
#1F4C36
oklch(37.8% 0.063 159.9)
-
Step 950
950
#132C20
oklch(26.9% 0.039 161.3)
#257E56 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) | #7D7454 | 0.100 |
| Deuteranopia (no green cones) | #716C59 | 0.096 |
| Tritanopia (no blue cones) | #007D73 | 0.045 |
| Achromatopsia (no color) | #6F6F6F | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #257E56
#257E56
oklch(53% 0.105 159.7)
- #93527F
#93527F
oklch(53% 0.105 339.7)
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 #257E56, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jungle Green #048243 ΔE 0.035
- Sea Green #2E8B57 ΔE 0.042
- Dark Sage #598556 ΔE 0.054
- Viridian #1E9167 ΔE 0.056
- Bluegreen #017A79 ΔE 0.059
- Teal #008080 ΔE 0.062
- Dark Aquamarine #017371 ΔE 0.064
- Military Green #667C3E ΔE 0.064
Use #257E56 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.