#288E05
Closest named color: Emerald Green (#028F1E). oklch(56.6% 0.182 140.3), rgb(40, 142, 5).
Aa
Black text reads best on this color (4.96:1).
About this color
#288E05 is a medium-dark, vivid green. In OKLCH its lightness is 57%, its chroma 0.182 and its hue 140°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Emerald Green (#028F1E), ΔE 0.012 away. Black text reads best on it, at 4.96:1.
| Hue family | Greens |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.182) |
| Temperature | in between |
| Nearest name | Emerald Green (#028F1E) |
| Black text | 4.96:1 |
| White text | 4.23:1 |
Values
| HEX | #288E05 |
| RGB | rgb(40, 142, 5) |
| HSL | hsl(105, 93%, 29%) |
| OKLCH | oklch(56.6% 0.182 140.3) |
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 #288E05 | 4.23:1 | AA large text | Lc -74.2 | Content text, not long reading |
| Black text on #288E05 | 4.96:1 | AA | Lc 35.4 | Non-text elements, placeholder text |
| #288E05 text on white | 4.23:1 | AA large text | Lc 68.7 | Content text, not long reading |
| #288E05 text on black | 4.96:1 | AA | Lc -33.0 | 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
#F2F7F0
oklch(97% 0.011 136.6)
-
Step 100
100
#E2EEDF
oklch(93.6% 0.024 139.4)
-
Step 200
200
#CAE1C5
oklch(88.5% 0.045 140.1)
-
Step 300
300
#A5CE9C
oklch(80.9% 0.081 140)
-
Step 400
400
#72B464
oklch(70.6% 0.131 140.1)
-
Step 500
500
#48A136
oklch(63.2% 0.167 140.5)
-
Step 600
600 (this color)
#288E05
oklch(56.6% 0.182 140.3)
-
Step 700
700
#1E7500
oklch(49.2% 0.159 140.3)
-
Step 800
800
#176000
oklch(42.8% 0.139 140.3)
-
Step 900
900
#1A4F0E
oklch(37.8% 0.11 140.4)
-
Step 950
950
#112E0B
oklch(26.9% 0.069 140.4)
#288E05 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) | #928000 | 0.124 |
| Deuteranopia (no green cones) | #86781E | 0.122 |
| Tritanopia (no blue cones) | #118978 | 0.122 |
| Achromatopsia (no color) | #7B7B7B | 0.182 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #288E05
#288E05
oklch(56.6% 0.182 140.3)
- #A449B7
#A449B7
oklch(56.7% 0.183 320.4)
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 #288E05, closest first.
No curated palette has a color within ΔE 0.04 of #288E05.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Emerald Green #028F1E ΔE 0.012
- Forest Green #228B22 ΔE 0.017
- True Green #089404 ΔE 0.019
- Irish Green #019529 ΔE 0.022
- Kelley Green #009337 ΔE 0.028
- Dark Grass Green #388004 ΔE 0.042
- Grass Green #3F9B0B ΔE 0.044
- Sap Green #5C8B15 ΔE 0.046
Use #288E05 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.