#308E56
Closest named color: Sea Green (#2E8B57). oklch(57.7% 0.123 153.5), rgb(48, 142, 86).
Aa
Black text reads best on this color (5.12:1).
About this color
#308E56 is a medium-dark, moderately saturated green. In OKLCH its lightness is 58%, its chroma 0.123 and its hue 154°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Sea Green (#2E8B57), ΔE 0.010 away. Black text reads best on it, at 5.12:1.
| Hue family | Greens |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.123) |
| Temperature | in between |
| Nearest name | Sea Green (#2E8B57) |
| Black text | 5.12:1 |
| White text | 4.09:1 |
Values
| HEX | #308E56 |
| RGB | rgb(48, 142, 86) |
| HSL | hsl(144, 49%, 37%) |
| OKLCH | oklch(57.7% 0.123 153.5) |
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 #308E56 | 4.09:1 | AA large text | Lc -73.3 | Content text, not long reading |
| Black text on #308E56 | 5.12:1 | AA | Lc 36.3 | Non-text elements, placeholder text |
| #308E56 text on white | 4.09:1 | AA large text | Lc 67.8 | Content text, not long reading |
| #308E56 text on black | 5.12:1 | AA | Lc -33.9 | 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
#CADFD0
oklch(88.4% 0.03 154.6)
-
Step 300
300
#A6CCB0
oklch(81% 0.056 153.1)
-
Step 400
400
#74B187
oklch(70.7% 0.088 153.6)
-
Step 500
500
#4B9D69
oklch(63% 0.113 153.8)
-
Step 600
600 (this color)
#308E56
oklch(57.7% 0.123 153.5)
-
Step 700
700
#187341
oklch(49.1% 0.115 153.7)
-
Step 800
800
#195E36
oklch(42.9% 0.095 153.6)
-
Step 900
900
#1C4D2F
oklch(37.8% 0.074 153.8)
-
Step 950
950
#122D1B
oklch(27% 0.047 152.8)
#308E56 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) | #8E8352 | 0.107 |
| Deuteranopia (no green cones) | #827A5A | 0.106 |
| Tritanopia (no blue cones) | #008C80 | 0.063 |
| Achromatopsia (no color) | #7D7D7D | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #308E56
#308E56
oklch(57.7% 0.123 153.5)
- #A45B98
#A45B98
oklch(57.7% 0.124 333.4)
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 #308E56, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Green #2E8B57 ΔE 0.010
- Viridian #1E9167 ΔE 0.022
- Light Forest Green #4F9153 ΔE 0.027
- Fern Green #548D44 ΔE 0.032
- Dark Sage #598556 ΔE 0.042
- Jungle Green #048243 ΔE 0.047
- Ocean Green #3D9973 ΔE 0.048
- Kelley Green #009337 ΔE 0.049
Use #308E56 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.