#288551
Closest named color: Sea Green (#2E8B57). oklch(54.9% 0.119 154.5), rgb(40, 133, 81).
Aa
White text reads best on this color (4.60:1).
About this color
#288551 is a medium-dark, moderately saturated green. In OKLCH its lightness is 55%, its chroma 0.119 and its hue 155°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Sea Green (#2E8B57), ΔE 0.019 away. White text reads best on it, at 4.60:1.
| Hue family | Greens |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.119) |
| Temperature | in between |
| Nearest name | Sea Green (#2E8B57) |
| Black text | 4.56:1 |
| White text | 4.60:1 |
Values
| HEX | #288551 |
| RGB | rgb(40, 133, 81) |
| HSL | hsl(146, 54%, 34%) |
| OKLCH | oklch(54.9% 0.119 154.5) |
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 #288551 | 4.60:1 | AA | Lc -77.1 | Fine for body text |
| Black text on #288551 | 4.56:1 | AA | Lc 32.5 | Non-text elements, placeholder text |
| #288551 text on white | 4.60:1 | AA | Lc 71.6 | Content text, not long reading |
| #288551 text on black | 4.56:1 | AA | Lc -30.1 | 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
#CBDFD1
oklch(88.5% 0.029 155.2)
-
Step 300
300
#A6CBB1
oklch(80.8% 0.054 154.4)
-
Step 400
400
#75B189
oklch(70.8% 0.086 154.5)
-
Step 500
500
#4D9D6B
oklch(63.2% 0.11 154.3)
-
Step 600
600 (this color)
#288551
oklch(54.9% 0.119 154.5)
-
Step 700
700
#1B7243
oklch(49% 0.11 154.6)
-
Step 800
800
#1A5D38
oklch(42.6% 0.091 154.9)
-
Step 900
900
#1D4C30
oklch(37.5% 0.071 154.7)
-
Step 950
950
#122D1C
oklch(27% 0.046 154.3)
#288551 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) | #857A4D | 0.105 |
| Deuteranopia (no green cones) | #797254 | 0.102 |
| Tritanopia (no blue cones) | #008378 | 0.060 |
| Achromatopsia (no color) | #757575 | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #288551
#288551
oklch(54.9% 0.119 154.5)
- #9A548D
#9A548D
oklch(54.8% 0.119 334.3)
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 #288551, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Green #2E8B57 ΔE 0.019
- Jungle Green #048243 ΔE 0.025
- Viridian #1E9167 ΔE 0.040
- Dark Sage #598556 ΔE 0.045
- Fern Green #548D44 ΔE 0.049
- Light Forest Green #4F9153 ΔE 0.051
- Tree Green #2A7E19 ΔE 0.056
- Forest Green #228B22 ΔE 0.059
Use #288551 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.