#258F5A
Closest named color: Sea Green (#2E8B57). oklch(57.8% 0.125 156.4), rgb(37, 143, 90).
Aa
Black text reads best on this color (5.15:1).
About this color
#258F5A is a medium-dark, moderately saturated green. In OKLCH its lightness is 58%, its chroma 0.125 and its hue 156°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Sea Green (#2E8B57), ΔE 0.012 away. Black text reads best on it, at 5.15:1.
| Hue family | Greens |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.125) |
| Temperature | in between |
| Nearest name | Sea Green (#2E8B57) |
| Black text | 5.15:1 |
| White text | 4.07:1 |
Values
| HEX | #258F5A |
| RGB | rgb(37, 143, 90) |
| HSL | hsl(150, 59%, 35%) |
| OKLCH | oklch(57.8% 0.125 156.4) |
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 #258F5A | 4.07:1 | AA large text | Lc -73.0 | Content text, not long reading |
| Black text on #258F5A | 5.15:1 | AA | Lc 36.5 | Non-text elements, placeholder text |
| #258F5A text on white | 4.07:1 | AA large text | Lc 67.5 | Content text, not long reading |
| #258F5A text on black | 5.15:1 | AA | Lc -34.1 | Non-text elements, placeholder text |
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
#E2EDE5
oklch(93.6% 0.016 154.5)
-
Step 200
200
#C9E0D1
oklch(88.5% 0.032 157.1)
-
Step 300
300
#A4CCB2
oklch(80.9% 0.056 156.4)
-
Step 400
400
#70B289
oklch(70.8% 0.091 156)
-
Step 500
500
#449E6C
oklch(63.1% 0.115 156.4)
-
Step 600
600 (this color)
#258F5A
oklch(57.8% 0.125 156.4)
-
Step 700
700
#067444
oklch(49.2% 0.117 156.2)
-
Step 800
800
#0F5E38
oklch(42.7% 0.096 156.3)
-
Step 900
900
#184D31
oklch(37.7% 0.074 156.7)
-
Step 950
950
#102D1D
oklch(26.9% 0.046 157)
#258F5A 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) | #8E8357 | 0.113 |
| Deuteranopia (no green cones) | #817A5D | 0.110 |
| Tritanopia (no blue cones) | #008E81 | 0.058 |
| Achromatopsia (no color) | #7E7E7E | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #258F5A
#258F5A
oklch(57.8% 0.125 156.4)
- #A75A95
#A75A95
oklch(57.7% 0.126 336.5)
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 #258F5A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Green #2E8B57 ΔE 0.012
- Viridian #1E9167 ΔE 0.017
- Light Forest Green #4F9153 ΔE 0.032
- Fern Green #548D44 ΔE 0.038
- Ocean Green #3D9973 ΔE 0.046
- Dark Sage #598556 ΔE 0.047
- Jungle Green #048243 ΔE 0.048
- Kelley Green #009337 ΔE 0.050
Use #258F5A 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.