#258A5E
Closest named color: Sea Green (#2E8B57). oklch(56.5% 0.114 159.9), rgb(37, 138, 94).
Aa
Black text reads best on this color (4.87:1).
About this color
#258A5E is a medium-dark, moderately saturated green. In OKLCH its lightness is 57%, its chroma 0.114 and its hue 160°. 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 4.87:1.
| Hue family | Greens |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.114) |
| Temperature | in between |
| Nearest name | Sea Green (#2E8B57) |
| Black text | 4.87:1 |
| White text | 4.30:1 |
Values
| HEX | #258A5E |
| RGB | rgb(37, 138, 94) |
| HSL | hsl(154, 58%, 34%) |
| OKLCH | oklch(56.5% 0.114 159.9) |
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 #258A5E | 4.30:1 | AA large text | Lc -74.9 | Content text, not long reading |
| Black text on #258A5E | 4.87:1 | AA | Lc 34.6 | Non-text elements, placeholder text |
| #258A5E text on white | 4.30:1 | AA large text | Lc 69.4 | Content text, not long reading |
| #258A5E text on black | 4.87:1 | AA | Lc -32.2 | 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
#F2F7F4
oklch(97.2% 0.007 160.1)
-
Step 100
100
#E2EDE6
oklch(93.6% 0.015 158.2)
-
Step 200
200
#CADFD3
oklch(88.5% 0.028 160.8)
-
Step 300
300
#A5CBB5
oklch(80.8% 0.051 159.6)
-
Step 400
400
#72B18F
oklch(70.8% 0.082 159.8)
-
Step 500
500
#479D73
oklch(63.1% 0.106 159.9)
-
Step 600
600 (this color)
#258A5E
oklch(56.5% 0.114 159.9)
-
Step 700
700
#10734B
oklch(49.2% 0.107 159.6)
-
Step 800
800
#135D3E
oklch(42.6% 0.087 160.3)
-
Step 900
900
#1A4D35
oklch(37.8% 0.069 159.9)
-
Step 950
950
#112D1F
oklch(27% 0.043 159.7)
#258A5E 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) | #887F5B | 0.107 |
| Deuteranopia (no green cones) | #7C7661 | 0.105 |
| Tritanopia (no blue cones) | #00897E | 0.049 |
| Achromatopsia (no color) | #7A7A7A | 0.115 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #258A5E
#258A5E
oklch(56.5% 0.114 159.9)
- #A1598B
#A1598B
oklch(56.4% 0.114 339.7)
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 #258A5E, 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 0.021
- Dark Sage #598556 ΔE 0.041
- Light Forest Green #4F9153 ΔE 0.043
- Jungle Green #048243 ΔE 0.043
- Fern Green #548D44 ΔE 0.048
- Ocean Green #3D9973 ΔE 0.053
- Kelley Green #009337 ΔE 0.064
Use #258A5E 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.