#258C4F
Closest named color: Sea Green (#2E8B57). oklch(56.7% 0.131 152.6), rgb(37, 140, 79).
Aa
Black text reads best on this color (4.94:1).
About this color
#258C4F is a medium-dark, moderately saturated green. In OKLCH its lightness is 57%, its chroma 0.131 and its hue 153°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Sea Green (#2E8B57), ΔE 0.014 away. Black text reads best on it, at 4.94:1.
| Hue family | Greens |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.131) |
| Temperature | in between |
| Nearest name | Sea Green (#2E8B57) |
| Black text | 4.94:1 |
| White text | 4.24:1 |
Values
| HEX | #258C4F |
| RGB | rgb(37, 140, 79) |
| HSL | hsl(144, 58%, 35%) |
| OKLCH | oklch(56.7% 0.131 152.6) |
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 #258C4F | 4.24:1 | AA large text | Lc -74.4 | Content text, not long reading |
| Black text on #258C4F | 4.94:1 | AA | Lc 35.1 | Non-text elements, placeholder text |
| #258C4F text on white | 4.24:1 | AA large text | Lc 69.0 | Content text, not long reading |
| #258C4F text on black | 4.94:1 | AA | Lc -32.7 | 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
#E2EDE4
oklch(93.5% 0.017 151.1)
-
Step 200
200
#CAE0CF
oklch(88.6% 0.033 152.4)
-
Step 300
300
#A5CCAF
oklch(80.9% 0.058 152.8)
-
Step 400
400
#71B284
oklch(70.7% 0.095 152.7)
-
Step 500
500
#479E65
oklch(63.1% 0.121 152.7)
-
Step 600
600 (this color)
#258C4F
oklch(56.7% 0.131 152.6)
-
Step 700
700
#0E743D
oklch(49.2% 0.122 152.7)
-
Step 800
800
#135E32
oklch(42.6% 0.101 152.4)
-
Step 900
900
#194D2C
oklch(37.6% 0.079 152.5)
-
Step 950
950
#112D1A
oklch(26.9% 0.049 152.2)
#258C4F 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) | #8C804B | 0.113 |
| Deuteranopia (no green cones) | #807753 | 0.112 |
| Tritanopia (no blue cones) | #008A7D | 0.068 |
| Achromatopsia (no color) | #7B7B7B | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #258C4F
#258C4F
oklch(56.7% 0.131 152.6)
- #A35698
#A35698
oklch(56.8% 0.132 332.7)
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 #258C4F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Green #2E8B57 ΔE 0.014
- Viridian #1E9167 ΔE 0.031
- Jungle Green #048243 ΔE 0.036
- Fern Green #548D44 ΔE 0.037
- Light Forest Green #4F9153 ΔE 0.037
- Kelley Green #009337 ΔE 0.042
- Forest Green #228B22 ΔE 0.046
- Dark Sage #598556 ΔE 0.049
Use #258C4F 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.