#288B36
Closest named color: Forest Green (#228B22). oklch(56.1% 0.152 145.4), rgb(40, 139, 54).
Aa
Black text reads best on this color (4.83:1).
About this color
#288B36 is a medium-dark, vivid green. In OKLCH its lightness is 56%, its chroma 0.152 and its hue 145°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Forest Green (#228B22), ΔE 0.018 away. Black text reads best on it, at 4.83:1.
| Hue family | Greens |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.152) |
| Temperature | in between |
| Nearest name | Forest Green (#228B22) |
| Black text | 4.83:1 |
| White text | 4.34:1 |
Values
| HEX | #288B36 |
| RGB | rgb(40, 139, 54) |
| HSL | hsl(128, 55%, 35%) |
| OKLCH | oklch(56.1% 0.152 145.4) |
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 #288B36 | 4.34:1 | AA large text | Lc -75.1 | Fine for body text |
| Black text on #288B36 | 4.83:1 | AA | Lc 34.4 | Non-text elements, placeholder text |
| #288B36 text on white | 4.34:1 | AA large text | Lc 69.6 | Content text, not long reading |
| #288B36 text on black | 4.83:1 | AA | Lc -32.0 | 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
#F2F7F2
oklch(97.1% 0.008 145.5)
-
Step 100
100
#E2EEE2
oklch(93.7% 0.02 145.4)
-
Step 200
200
#CAE0CA
oklch(88.4% 0.038 145.2)
-
Step 300
300
#A5CDA6
oklch(80.9% 0.069 145.5)
-
Step 400
400
#73B376
oklch(70.8% 0.11 145.4)
-
Step 500
500
#4A9F51
oklch(63.1% 0.14 145.3)
-
Step 600
600 (this color)
#288B36
oklch(56.1% 0.152 145.4)
-
Step 700
700
#167427
oklch(49% 0.141 145.5)
-
Step 800
800
#175F22
oklch(42.7% 0.117 145.5)
-
Step 900
900
#1B4E21
oklch(37.7% 0.091 145.6)
-
Step 950
950
#112E14
oklch(27.1% 0.059 145.8)
#288B36 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) | #8D7E2D | 0.115 |
| Deuteranopia (no green cones) | #82763D | 0.115 |
| Tritanopia (no blue cones) | #018779 | 0.094 |
| Achromatopsia (no color) | #797979 | 0.153 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #288B36
#288B36
oklch(56.1% 0.152 145.4)
- #A050A5
#A050A5
oklch(56.1% 0.152 325.1)
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 #288B36, closest first.
No curated palette has a color within ΔE 0.04 of #288B36.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Forest Green #228B22 ΔE 0.018
- Kelley Green #009337 ΔE 0.025
- Emerald Green #028F1E ΔE 0.029
- Irish Green #019529 ΔE 0.036
- Dark Grass Green #388004 ΔE 0.038
- Jungle Green #048243 ΔE 0.038
- Tree Green #2A7E19 ΔE 0.041
- Sea Green #2E8B57 ΔE 0.041
Use #288B36 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.