#288D31
Closest named color: Forest Green (#228B22). oklch(56.6% 0.159 144.4), rgb(40, 141, 49).
Aa
Black text reads best on this color (4.94:1).
About this color
#288D31 is a medium-dark, vivid green. In OKLCH its lightness is 57%, its chroma 0.159 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 0.014 away. Black text reads best on it, at 4.94:1.
| Hue family | Greens |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.159) |
| Temperature | in between |
| Nearest name | Forest Green (#228B22) |
| Black text | 4.94:1 |
| White text | 4.24:1 |
Values
| HEX | #288D31 |
| RGB | rgb(40, 141, 49) |
| HSL | hsl(125, 56%, 35%) |
| OKLCH | oklch(56.6% 0.159 144.4) |
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 #288D31 | 4.24:1 | AA large text | Lc -74.4 | Content text, not long reading |
| Black text on #288D31 | 4.94:1 | AA | Lc 35.2 | Non-text elements, placeholder text |
| #288D31 text on white | 4.24:1 | AA large text | Lc 68.9 | Content text, not long reading |
| #288D31 text on black | 4.94:1 | AA | Lc -32.8 | 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
#F2F7F1
oklch(97.1% 0.01 140.5)
-
Step 100
100
#E2EEE1
oklch(93.7% 0.021 143.2)
-
Step 200
200
#CAE0C9
oklch(88.4% 0.039 144)
-
Step 300
300
#A5CDA4
oklch(80.8% 0.071 144.3)
-
Step 400
400
#72B372
oklch(70.6% 0.114 144.2)
-
Step 500
500
#49A04C
oklch(63.2% 0.147 144.2)
-
Step 600
600 (this color)
#288D31
oklch(56.6% 0.159 144.4)
-
Step 700
700
#147520
oklch(49.2% 0.148 144.3)
-
Step 800
800
#155F1D
oklch(42.6% 0.122 144.5)
-
Step 900
900
#1B4E1E
oklch(37.7% 0.095 144.4)
-
Step 950
950
#112E12
oklch(27% 0.061 144.3)
#288D31 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) | #908026 | 0.118 |
| Deuteranopia (no green cones) | #847839 | 0.117 |
| Tritanopia (no blue cones) | #02897A | 0.099 |
| Achromatopsia (no color) | #7B7B7B | 0.160 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #288D31
#288D31
oklch(56.6% 0.159 144.4)
- #A350AA
#A350AA
oklch(56.7% 0.159 324.4)
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 #288D31, closest first.
No curated palette has a color within ΔE 0.04 of #288D31.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Forest Green #228B22 ΔE 0.014
- Kelley Green #009337 ΔE 0.018
- Emerald Green #028F1E ΔE 0.023
- Irish Green #019529 ΔE 0.028
- True Green #089404 ΔE 0.038
- Dark Grass Green #388004 ΔE 0.040
- Sap Green #5C8B15 ΔE 0.042
- Fern Green #548D44 ΔE 0.045
Use #288D31 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.