#257C55
Closest named color: Jungle Green (#048243). oklch(52.4% 0.103 159.8), rgb(37, 124, 85).
Aa
White text reads best on this color (5.13:1).
About this color
#257C55 is a medium-dark, moderately saturated green. In OKLCH its lightness is 52%, its chroma 0.103 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 0.038 away. White text reads best on it, at 5.13:1.
| Hue family | Greens |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.103) |
| Temperature | in between |
| Nearest name | Jungle Green (#048243) |
| Black text | 4.09:1 |
| White text | 5.13:1 |
Values
| HEX | #257C55 |
| RGB | rgb(37, 124, 85) |
| HSL | hsl(153, 54%, 32%) |
| OKLCH | oklch(52.4% 0.103 159.8) |
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 #257C55 | 5.13:1 | AA | Lc -80.4 | Fine for body text |
| Black text on #257C55 | 4.09:1 | AA large text | Lc 29.0 | Dividers and decoration only |
| #257C55 text on white | 5.13:1 | AA | Lc 75.0 | Fine for body text |
| #257C55 text on black | 4.09:1 | AA large text | Lc -26.7 | 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
#A8CAB6
oklch(80.8% 0.046 159.4)
-
Step 400
400
#77AF91
oklch(70.7% 0.074 160.3)
-
Step 500
500
#519B75
oklch(63.1% 0.095 159.6)
-
Step 600
600 (this color)
#257C55
oklch(52.4% 0.103 159.8)
-
Step 700
700
#22714D
oklch(49.1% 0.096 159.6)
-
Step 800
800
#1F5C40
oklch(42.7% 0.079 160.2)
-
Step 900
900
#204C36
oklch(37.8% 0.062 159.5)
-
Step 950
950
#142C20
oklch(26.9% 0.038 160.6)
#257C55 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) | #7B7253 | 0.098 |
| Deuteranopia (no green cones) | #6F6A58 | 0.095 |
| Tritanopia (no blue cones) | #007B72 | 0.045 |
| Achromatopsia (no color) | #6E6E6E | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #257C55
#257C55
oklch(52.4% 0.103 159.8)
- #91517D
#91517D
oklch(52.5% 0.103 339.9)
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 #257C55, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jungle Green #048243 ΔE 0.038
- Sea Green #2E8B57 ΔE 0.048
- Dark Sage #598556 ΔE 0.058
- Bluegreen #017A79 ΔE 0.058
- Dark Aquamarine #017371 ΔE 0.060
- Teal #008080 ΔE 0.062
- Viridian #1E9167 ΔE 0.062
- Dark Olive Green #556B2F ΔE 0.064
Use #257C55 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.