#309057
Closest named color: Sea Green (#2E8B57). oklch(58.3% 0.125 153.5), rgb(48, 144, 87).
Aa
Black text reads best on this color (5.25:1).
About this color
#309057 is a medium-dark, moderately saturated green. In OKLCH its lightness is 58%, its chroma 0.125 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 0.016 away. Black text reads best on it, at 5.25:1.
| Hue family | Greens |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.125) |
| Temperature | in between |
| Nearest name | Sea Green (#2E8B57) |
| Black text | 5.25:1 |
| White text | 3.99:1 |
Values
| HEX | #309057 |
| RGB | rgb(48, 144, 87) |
| HSL | hsl(144, 50%, 38%) |
| OKLCH | oklch(58.3% 0.125 153.5) |
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 #309057 | 3.99:1 | AA large text | Lc -72.5 | Content text, not long reading |
| Black text on #309057 | 5.25:1 | AA | Lc 37.1 | Non-text elements, placeholder text |
| #309057 text on white | 3.99:1 | AA large text | Lc 67.0 | Content text, not long reading |
| #309057 text on black | 5.25:1 | AA | Lc -34.7 | 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
#CAE0D0
oklch(88.6% 0.032 154.1)
-
Step 300
300
#A5CCB0
oklch(80.9% 0.057 153.8)
-
Step 400
400
#73B186
oklch(70.6% 0.09 153.3)
-
Step 500
500
#4A9D68
oklch(63% 0.114 153.5)
-
Step 600
600 (this color)
#309057
oklch(58.3% 0.125 153.5)
-
Step 700
700
#167340
oklch(49.1% 0.116 153.5)
-
Step 800
800
#175E35
oklch(42.8% 0.097 153.4)
-
Step 900
900
#1B4D2E
oklch(37.7% 0.076 153.4)
-
Step 950
950
#122D1B
oklch(27% 0.047 152.8)
#309057 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) | #908453 | 0.110 |
| Deuteranopia (no green cones) | #847C5B | 0.107 |
| Tritanopia (no blue cones) | #008E82 | 0.064 |
| Achromatopsia (no color) | #7F7F7F | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #309057
#309057
oklch(58.3% 0.125 153.5)
- #A65C9A
#A65C9A
oklch(58.1% 0.126 333.3)
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 #309057, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Green #2E8B57 ΔE 0.016
- Viridian #1E9167 ΔE 0.021
- Light Forest Green #4F9153 ΔE 0.025
- Fern Green #548D44 ΔE 0.031
- Ocean Green #3D9973 ΔE 0.044
- Dark Sage #598556 ΔE 0.045
- Kelley Green #009337 ΔE 0.047
- Moss Green #658B38 ΔE 0.051
Use #309057 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.