#308B63
Closest named color: Sea Green (#2E8B57). oklch(57.2% 0.106 160.9), rgb(48, 139, 99).
Aa
Black text reads best on this color (4.99:1).
About this color
#308B63 is a medium-dark, moderately saturated green. In OKLCH its lightness is 57%, its chroma 0.106 and its hue 161°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Sea Green (#2E8B57), ΔE 0.017 away. Black text reads best on it, at 4.99:1.
| Hue family | Greens |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.106) |
| Temperature | in between |
| Nearest name | Sea Green (#2E8B57) |
| Black text | 4.99:1 |
| White text | 4.20:1 |
Values
| HEX | #308B63 |
| RGB | rgb(48, 139, 99) |
| HSL | hsl(154, 49%, 37%) |
| OKLCH | oklch(57.2% 0.106 160.9) |
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 #308B63 | 4.20:1 | AA large text | Lc -74.2 | Content text, not long reading |
| Black text on #308B63 | 4.99:1 | AA | Lc 35.4 | Non-text elements, placeholder text |
| #308B63 text on white | 4.20:1 | AA large text | Lc 68.7 | Content text, not long reading |
| #308B63 text on black | 4.99:1 | AA | Lc -33.0 | 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
#E2EDE7
oklch(93.6% 0.014 162.5)
-
Step 200
200
#CBDFD3
oklch(88.5% 0.027 159.5)
-
Step 300
300
#A6CBB7
oklch(81% 0.048 161.5)
-
Step 400
400
#75B091
oklch(70.8% 0.077 160.7)
-
Step 500
500
#4D9C76
oklch(63.2% 0.098 160.8)
-
Step 600
600 (this color)
#308B63
oklch(57.2% 0.106 160.9)
-
Step 700
700
#1B724E
oklch(49.2% 0.099 160.8)
-
Step 800
800
#1A5D40
oklch(42.8% 0.083 160.7)
-
Step 900
900
#1D4C36
oklch(37.7% 0.064 160.6)
-
Step 950
950
#122D20
oklch(27.1% 0.041 160.9)
#308B63 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) | #898161 | 0.101 |
| Deuteranopia (no green cones) | #7D7866 | 0.099 |
| Tritanopia (no blue cones) | #008B80 | 0.044 |
| Achromatopsia (no color) | #7C7C7C | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #308B63
#308B63
oklch(57.2% 0.106 160.9)
- #A25D8B
#A25D8B
oklch(57.2% 0.108 340.8)
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 #308B63, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Green #2E8B57 ΔE 0.017
- Viridian #1E9167 ΔE 0.018
- Dark Sage #598556 ΔE 0.036
- Light Forest Green #4F9153 ΔE 0.040
- Ocean Green #3D9973 ΔE 0.045
- Fern Green #548D44 ΔE 0.047
- Jungle Green #048243 ΔE 0.053
- Slate Green #658D6D ΔE 0.055
Use #308B63 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.