#288756
Closest named color: Sea Green (#2E8B57). oklch(55.6% 0.116 156.4), rgb(40, 135, 86).
Aa
Black text reads best on this color (4.69:1).
About this color
#288756 is a medium-dark, moderately saturated green. In OKLCH its lightness is 56%, its chroma 0.116 and its hue 156°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Sea Green (#2E8B57), ΔE 0.013 away. Black text reads best on it, at 4.69:1.
| Hue family | Greens |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.116) |
| Temperature | in between |
| Nearest name | Sea Green (#2E8B57) |
| Black text | 4.69:1 |
| White text | 4.47:1 |
Values
| HEX | #288756 |
| RGB | rgb(40, 135, 86) |
| HSL | hsl(149, 54%, 34%) |
| OKLCH | oklch(55.6% 0.116 156.4) |
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 #288756 | 4.47:1 | AA large text | Lc -76.2 | Fine for body text |
| Black text on #288756 | 4.69:1 | AA | Lc 33.4 | Non-text elements, placeholder text |
| #288756 text on white | 4.47:1 | AA large text | Lc 70.7 | Content text, not long reading |
| #288756 text on black | 4.69:1 | AA | Lc -30.9 | 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
#E2EDE6
oklch(93.6% 0.015 158.2)
-
Step 200
200
#CADFD1
oklch(88.4% 0.029 156.6)
-
Step 300
300
#A6CBB3
oklch(80.8% 0.052 156.6)
-
Step 400
400
#74B18B
oklch(70.8% 0.085 156.2)
-
Step 500
500
#4B9D6E
oklch(63.2% 0.108 156.3)
-
Step 600
600 (this color)
#288756
oklch(55.6% 0.116 156.4)
-
Step 700
700
#197246
oklch(49% 0.108 156.3)
-
Step 800
800
#195D3A
oklch(42.7% 0.089 156.4)
-
Step 900
900
#1C4C32
oklch(37.6% 0.069 156.9)
-
Step 950
950
#122D1D
oklch(27% 0.045 155.8)
#288756 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) | #867C53 | 0.105 |
| Deuteranopia (no green cones) | #7A7459 | 0.102 |
| Tritanopia (no blue cones) | #00867A | 0.054 |
| Achromatopsia (no color) | #777777 | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #288756
#288756
oklch(55.6% 0.116 156.4)
- #9D578D
#9D578D
oklch(55.7% 0.116 336.1)
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 #288756, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Green #2E8B57 ΔE 0.013
- Viridian #1E9167 ΔE 0.032
- Jungle Green #048243 ΔE 0.032
- Dark Sage #598556 ΔE 0.042
- Light Forest Green #4F9153 ΔE 0.047
- Fern Green #548D44 ΔE 0.047
- Military Green #667C3E ΔE 0.061
- Kelley Green #009337 ΔE 0.061
Use #288756 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.