#258B44
Closest named color: Sea Green (#2E8B57). oklch(56.3% 0.141 149.2), rgb(37, 139, 68).
Aa
Black text reads best on this color (4.85:1).
About this color
#258B44 is a medium-dark, vivid green. In OKLCH its lightness is 56%, its chroma 0.141 and its hue 149°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Sea Green (#2E8B57), ΔE 0.026 away. Black text reads best on it, at 4.85:1.
| Hue family | Greens |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.141) |
| Temperature | in between |
| Nearest name | Sea Green (#2E8B57) |
| Black text | 4.85:1 |
| White text | 4.32:1 |
Values
| HEX | #258B44 |
| RGB | rgb(37, 139, 68) |
| HSL | hsl(138, 58%, 35%) |
| OKLCH | oklch(56.3% 0.141 149.2) |
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 #258B44 | 4.32:1 | AA large text | Lc -75.0 | Fine for body text |
| Black text on #258B44 | 4.85:1 | AA | Lc 34.6 | Non-text elements, placeholder text |
| #258B44 text on white | 4.32:1 | AA large text | Lc 69.5 | Content text, not long reading |
| #258B44 text on black | 4.85:1 | AA | Lc -32.1 | 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
#F2F7F2
oklch(97.1% 0.008 145.5)
-
Step 100
100
#E2EDE3
oklch(93.5% 0.018 148.1)
-
Step 200
200
#CAE0CD
oklch(88.5% 0.035 149.3)
-
Step 300
300
#A5CDAB
oklch(81% 0.064 149.2)
-
Step 400
400
#72B27E
oklch(70.6% 0.1 149.2)
-
Step 500
500
#489F5D
oklch(63.2% 0.129 149.3)
-
Step 600
600 (this color)
#258B44
oklch(56.3% 0.141 149.2)
-
Step 700
700
#117434
oklch(49.1% 0.131 149.3)
-
Step 800
800
#145F2B
oklch(42.8% 0.109 149)
-
Step 900
900
#1A4E27
oklch(37.8% 0.086 148.9)
-
Step 950
950
#112E17
oklch(27.1% 0.055 148.5)
#258B44 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) | #8C7F3E | 0.114 |
| Deuteranopia (no green cones) | #807649 | 0.113 |
| Tritanopia (no blue cones) | #00887A | 0.079 |
| Achromatopsia (no color) | #797979 | 0.141 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #258B44
#258B44
oklch(56.3% 0.141 149.2)
- #A1539D
#A1539D
oklch(56.3% 0.14 329.2)
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 #258B44, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Green #2E8B57 ΔE 0.026
- Jungle Green #048243 ΔE 0.032
- Kelley Green #009337 ΔE 0.033
- Forest Green #228B22 ΔE 0.033
- Fern Green #548D44 ΔE 0.038
- Emerald Green #028F1E ΔE 0.043
- Light Forest Green #4F9153 ΔE 0.044
- Viridian #1E9167 ΔE 0.044
Use #258B44 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.