#258B58
Closest named color: Sea Green (#2E8B57). oklch(56.6% 0.121 156.6), rgb(37, 139, 88).
Aa
Black text reads best on this color (4.91:1).
About this color
#258B58 is a medium-dark, moderately saturated green. In OKLCH its lightness is 57%, its chroma 0.121 and its hue 157°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Sea Green (#2E8B57), ΔE 0.005 away. Black text reads best on it, at 4.91:1.
| Hue family | Greens |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.121) |
| Temperature | in between |
| Nearest name | Sea Green (#2E8B57) |
| Black text | 4.91:1 |
| White text | 4.27:1 |
Values
| HEX | #258B58 |
| RGB | rgb(37, 139, 88) |
| HSL | hsl(150, 58%, 35%) |
| OKLCH | oklch(56.6% 0.121 156.6) |
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 #258B58 | 4.27:1 | AA large text | Lc -74.7 | Content text, not long reading |
| Black text on #258B58 | 4.91:1 | AA | Lc 34.9 | Non-text elements, placeholder text |
| #258B58 text on white | 4.27:1 | AA large text | Lc 69.2 | Content text, not long reading |
| #258B58 text on black | 4.91:1 | AA | Lc -32.5 | 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
#E2EDE6
oklch(93.6% 0.015 158.2)
-
Step 200
200
#CAE0D1
oklch(88.6% 0.031 155.9)
-
Step 300
300
#A5CCB2
oklch(81% 0.055 155.8)
-
Step 400
400
#71B18A
oklch(70.6% 0.088 156.6)
-
Step 500
500
#479D6D
oklch(63% 0.111 156.6)
-
Step 600
600 (this color)
#258B58
oklch(56.6% 0.121 156.6)
-
Step 700
700
#0F7345
oklch(49.1% 0.113 156.5)
-
Step 800
800
#135E39
oklch(42.8% 0.094 156.4)
-
Step 900
900
#194D31
oklch(37.7% 0.073 156.4)
-
Step 950
950
#112D1D
oklch(27% 0.046 156.4)
#258B58 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) | #8A8055 | 0.110 |
| Deuteranopia (no green cones) | #7D775B | 0.106 |
| Tritanopia (no blue cones) | #008A7E | 0.057 |
| Achromatopsia (no color) | #7A7A7A | 0.122 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #258B58
#258B58
oklch(56.6% 0.121 156.6)
- #A25891
#A25891
oklch(56.6% 0.122 336.3)
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 #258B58, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Green #2E8B57 ΔE 0.005
- Viridian #1E9167 ΔE 0.023
- Jungle Green #048243 ΔE 0.039
- Light Forest Green #4F9153 ΔE 0.039
- Fern Green #548D44 ΔE 0.042
- Dark Sage #598556 ΔE 0.043
- Kelley Green #009337 ΔE 0.054
- Ocean Green #3D9973 ΔE 0.055
Use #258B58 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.