#288959
Closest named color: Sea Green (#2E8B57). oklch(56.2% 0.116 157.3), rgb(40, 137, 89).
Aa
Black text reads best on this color (4.81:1).
About this color
#288959 is a medium-dark, moderately saturated green. In OKLCH its lightness is 56%, its chroma 0.116 and its hue 157°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Sea Green (#2E8B57), ΔE 0.008 away. Black text reads best on it, at 4.81:1.
| Hue family | Greens |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.116) |
| Temperature | in between |
| Nearest name | Sea Green (#2E8B57) |
| Black text | 4.81:1 |
| White text | 4.36:1 |
Values
| HEX | #288959 |
| RGB | rgb(40, 137, 89) |
| HSL | hsl(150, 55%, 35%) |
| OKLCH | oklch(56.2% 0.116 157.3) |
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 #288959 | 4.36:1 | AA large text | Lc -75.4 | Fine for body text |
| Black text on #288959 | 4.81:1 | AA | Lc 34.2 | Non-text elements, placeholder text |
| #288959 text on white | 4.36:1 | AA large text | Lc 69.9 | Content text, not long reading |
| #288959 text on black | 4.81:1 | AA | Lc -31.8 | 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
#CADFD2
oklch(88.4% 0.029 158.6)
-
Step 300
300
#A6CBB3
oklch(80.8% 0.052 156.6)
-
Step 400
400
#73B18C
oklch(70.8% 0.084 157.2)
-
Step 500
500
#4A9D6F
oklch(63.1% 0.108 157)
-
Step 600
600 (this color)
#288959
oklch(56.2% 0.116 157.3)
-
Step 700
700
#167347
oklch(49.2% 0.109 156.9)
-
Step 800
800
#175D3B
oklch(42.6% 0.089 157.5)
-
Step 900
900
#1B4D32
oklch(37.8% 0.071 156.7)
-
Step 950
950
#122D1E
oklch(27.1% 0.044 157.4)
#288959 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) | #887E56 | 0.107 |
| Deuteranopia (no green cones) | #7C755C | 0.105 |
| Tritanopia (no blue cones) | #00887D | 0.054 |
| Achromatopsia (no color) | #797979 | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #288959
#288959
oklch(56.2% 0.116 157.3)
- #A0588D
#A0588D
oklch(56.2% 0.117 337.7)
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 #288959, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Green #2E8B57 ΔE 0.008
- Viridian #1E9167 ΔE 0.026
- Jungle Green #048243 ΔE 0.038
- Dark Sage #598556 ΔE 0.041
- Light Forest Green #4F9153 ΔE 0.042
- Fern Green #548D44 ΔE 0.045
- Ocean Green #3D9973 ΔE 0.057
- Kelley Green #009337 ΔE 0.060
Use #288959 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.