#28AF37
Closest named color: Kelly Green (#02AB2E). oklch(66% 0.195 144.3), rgb(40, 175, 55).
Aa
Black text reads best on this color (7.27:1).
About this color
#28AF37 is a medium-light, vivid green. In OKLCH its lightness is 66%, its chroma 0.195 and its hue 144°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Kelly Green (#02AB2E), ΔE 0.018 away. Black text reads best on it, at 7.27:1.
| Hue family | Greens |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.195) |
| Temperature | in between |
| Nearest name | Kelly Green (#02AB2E) |
| Black text | 7.27:1 |
| White text | 2.88:1 |
Values
| HEX | #28AF37 |
| RGB | rgb(40, 175, 55) |
| HSL | hsl(127, 63%, 42%) |
| OKLCH | oklch(66% 0.195 144.3) |
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 #28AF37 | 2.88:1 | Fails | Lc -59.9 | Large or bold text, headings |
| Black text on #28AF37 | 7.27:1 | AAA | Lc 49.5 | Large or bold text, headings |
| #28AF37 text on white | 2.88:1 | Fails | Lc 54.6 | Large or bold text, headings |
| #28AF37 text on black | 7.27:1 | AAA | Lc -47.3 | Large or bold text, headings |
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 500.
-
Step 50
50
#F0F8F0
oklch(97.1% 0.014 145.5)
-
Step 100
100
#DFEFDF
oklch(93.6% 0.027 145.4)
-
Step 200
200
#C5E3C4
oklch(88.6% 0.053 144.3)
-
Step 300
300
#9BD19A
oklch(80.9% 0.095 144.2)
-
Step 400
400
#5DB960
oklch(70.8% 0.153 144.4)
-
Step 500
500 (this color)
#28AF37
oklch(66% 0.195 144.3)
-
Step 600
600
#008C1E
oklch(55.6% 0.178 144.3)
-
Step 700
700
#007618
oklch(49.1% 0.157 144.4)
-
Step 800
800
#006112
oklch(42.8% 0.137 144.4)
-
Step 900
900
#00510D
oklch(37.8% 0.121 144.3)
-
Step 950
950
#043008
oklch(27% 0.081 144.3)
#28AF37 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) | #B29E26 | 0.143 |
| Deuteranopia (no green cones) | #A39442 | 0.143 |
| Tritanopia (no blue cones) | #00AA97 | 0.123 |
| Achromatopsia (no color) | #989898 | 0.196 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28AF37
#28AF37
oklch(66% 0.195 144.3)
- #CA60D4
#CA60D4
oklch(66% 0.195 324.1)
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 #28AF37, closest first.
No curated palette has a color within ΔE 0.04 of #28AF37.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Kelly Green #02AB2E ΔE 0.018
- Shamrock #01B44C ΔE 0.019
- Medium Green #39AD48 ΔE 0.021
- Grass #5CAC2D ΔE 0.032
- Leaf Green #5CA904 ΔE 0.034
- Leafy Green #51B73B ΔE 0.037
- Mid Green #50A747 ΔE 0.039
- Dark Pastel Green #56AE57 ΔE 0.048
Use #28AF37 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.