#288D34
Closest named color: Forest Green (#228B22). oklch(56.7% 0.156 144.9), rgb(40, 141, 52).
Aa
Black text reads best on this color (4.94:1).
About this color
#288D34 is a medium-dark, vivid green. In OKLCH its lightness is 57%, its chroma 0.156 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 0.016 away. Black text reads best on it, at 4.94:1.
| Hue family | Greens |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.156) |
| Temperature | in between |
| Nearest name | Forest Green (#228B22) |
| Black text | 4.94:1 |
| White text | 4.24:1 |
Values
| HEX | #288D34 |
| RGB | rgb(40, 141, 52) |
| HSL | hsl(127, 56%, 35%) |
| OKLCH | oklch(56.7% 0.156 144.9) |
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 #288D34 | 4.24:1 | AA large text | Lc -74.4 | Content text, not long reading |
| Black text on #288D34 | 4.94:1 | AA | Lc 35.2 | Non-text elements, placeholder text |
| #288D34 text on white | 4.24:1 | AA large text | Lc 68.9 | Content text, not long reading |
| #288D34 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
#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
#A5CDA5
oklch(80.9% 0.07 144.9)
-
Step 400
400
#72B374
oklch(70.7% 0.112 145)
-
Step 500
500
#499F4F
oklch(63% 0.143 145)
-
Step 600
600 (this color)
#288D34
oklch(56.7% 0.156 144.9)
-
Step 700
700
#137523
oklch(49.2% 0.146 144.9)
-
Step 800
800
#155F1F
oklch(42.7% 0.12 145)
-
Step 900
900
#1A4E1F
oklch(37.7% 0.094 145.1)
-
Step 950
950
#112E13
oklch(27.1% 0.06 145)
#288D34 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) | #8F802A | 0.116 |
| Deuteranopia (no green cones) | #84783C | 0.117 |
| Tritanopia (no blue cones) | #00897A | 0.097 |
| Achromatopsia (no color) | #7B7B7B | 0.157 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #288D34
#288D34
oklch(56.7% 0.156 144.9)
- #A350A8
#A350A8
oklch(56.6% 0.157 325.2)
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 #288D34, closest first.
No curated palette has a color within ΔE 0.04 of #288D34.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Forest Green #228B22 ΔE 0.016
- Kelley Green #009337 ΔE 0.019
- Emerald Green #028F1E ΔE 0.025
- Irish Green #019529 ΔE 0.030
- Dark Grass Green #388004 ΔE 0.041
- True Green #089404 ΔE 0.041
- Sap Green #5C8B15 ΔE 0.043
- Fern Green #548D44 ΔE 0.043
Use #288D34 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.