#28B51C
Closest named color: Shamrock (#01B44C). oklch(67.5% 0.216 142), rgb(40, 181, 28).
Aa
Black text reads best on this color (7.71:1).
About this color
#28B51C is a medium-light, vivid green. In OKLCH its lightness is 67%, its chroma 0.216 and its hue 142°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Shamrock (#01B44C), ΔE 0.034 away. Black text reads best on it, at 7.71:1.
| Hue family | Greens |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.216) |
| Temperature | in between |
| Nearest name | Shamrock (#01B44C) |
| Black text | 7.71:1 |
| White text | 2.72:1 |
Values
| HEX | #28B51C |
| RGB | rgb(40, 181, 28) |
| HSL | hsl(115, 73%, 41%) |
| OKLCH | oklch(67.5% 0.216 142) |
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 #28B51C | 2.72:1 | Fails | Lc -57.3 | Large or bold text, headings |
| Black text on #28B51C | 7.71:1 | AAA | Lc 52.0 | Large or bold text, headings |
| #28B51C text on white | 2.72:1 | Fails | Lc 52.1 | Large or bold text, headings |
| #28B51C text on black | 7.71:1 | AAA | Lc -49.8 | 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 400.
-
Step 50
50
#EFF9EE
oklch(97.2% 0.018 142.8)
-
Step 100
100
#DCF1D9
oklch(93.6% 0.039 141.7)
-
Step 200
200
#BEE6B9
oklch(88.5% 0.074 142)
-
Step 300
300
#8CD784
oklch(81% 0.136 142)
-
Step 400
400 (this color)
#28B51C
oklch(67.5% 0.216 142)
-
Step 500
500
#12A600
oklch(63% 0.212 142)
-
Step 600
600
#0D8C00
oklch(55.6% 0.187 142)
-
Step 700
700
#097600
oklch(49.1% 0.165 142.1)
-
Step 800
800
#066100
oklch(42.8% 0.144 142)
-
Step 900
900
#045100
oklch(37.8% 0.127 142.1)
-
Step 950
950
#023000
oklch(26.9% 0.09 141.9)
#28B51C 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) | #B9A300 | 0.151 |
| Deuteranopia (no green cones) | #AA9931 | 0.150 |
| Tritanopia (no blue cones) | #00AF9A | 0.141 |
| Achromatopsia (no color) | #9D9D9D | 0.217 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28B51C
#28B51C
oklch(67.5% 0.216 142)
- #D15EE3
#D15EE3
oklch(67.4% 0.215 322)
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 #28B51C, closest first.
No curated palette has a color within ΔE 0.04 of #28B51C.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Shamrock #01B44C ΔE 0.034
- Leafy Green #51B73B ΔE 0.035
- Kelly Green #02AB2E ΔE 0.035
- Frog Green #58BC08 ΔE 0.038
- Shamrock Green #02C14D ΔE 0.040
- Leaf Green #5CA904 ΔE 0.042
- Grass #5CAC2D ΔE 0.043
- Medium Green #39AD48 ΔE 0.045
Use #28B51C 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.