#288B31
Closest named color: Forest Green (#228B22). oklch(56.1% 0.156 144.4), rgb(40, 139, 49).
Aa
Black text reads best on this color (4.82:1).
About this color
#288B31 is a medium-dark, vivid green. In OKLCH its lightness is 56%, its chroma 0.156 and its hue 144°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Forest Green (#228B22), ΔE 0.013 away. Black text reads best on it, at 4.82:1.
| Hue family | Greens |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.156) |
| Temperature | in between |
| Nearest name | Forest Green (#228B22) |
| Black text | 4.82:1 |
| White text | 4.34:1 |
Values
| HEX | #288B31 |
| RGB | rgb(40, 139, 49) |
| HSL | hsl(125, 55%, 35%) |
| OKLCH | oklch(56.1% 0.156 144.4) |
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 #288B31 | 4.34:1 | AA large text | Lc -75.2 | Fine for body text |
| Black text on #288B31 | 4.82:1 | AA | Lc 34.4 | Non-text elements, placeholder text |
| #288B31 text on white | 4.34:1 | AA large text | Lc 69.7 | Content text, not long reading |
| #288B31 text on black | 4.82:1 | 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
#CAE0C9
oklch(88.4% 0.039 144)
-
Step 300
300
#A5CDA5
oklch(80.9% 0.07 144.9)
-
Step 400
400
#73B373
oklch(70.7% 0.113 144.3)
-
Step 500
500
#4A9F4E
oklch(63% 0.143 144.5)
-
Step 600
600 (this color)
#288B31
oklch(56.1% 0.156 144.4)
-
Step 700
700
#167522
oklch(49.2% 0.146 144.5)
-
Step 800
800
#175F1E
oklch(42.7% 0.12 144.5)
-
Step 900
900
#1B4E1E
oklch(37.7% 0.095 144.4)
-
Step 950
950
#122E13
oklch(27.1% 0.059 144.4)
#288B31 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) | #8E7E26 | 0.116 |
| Deuteranopia (no green cones) | #827639 | 0.115 |
| Tritanopia (no blue cones) | #048778 | 0.097 |
| Achromatopsia (no color) | #797979 | 0.157 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #288B31
#288B31
oklch(56.1% 0.156 144.4)
- #A04FA7
#A04FA7
oklch(56.1% 0.156 324.3)
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 #288B31, closest first.
No curated palette has a color within ΔE 0.04 of #288B31.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Forest Green #228B22 ΔE 0.013
- Kelley Green #009337 ΔE 0.023
- Emerald Green #028F1E ΔE 0.025
- Irish Green #019529 ΔE 0.033
- Dark Grass Green #388004 ΔE 0.035
- Tree Green #2A7E19 ΔE 0.039
- Jungle Green #048243 ΔE 0.040
- True Green #089404 ΔE 0.043
Use #288B31 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.