#28B258
Closest named color: Medium Green (#39AD48). oklch(67.2% 0.172 149.8), rgb(40, 178, 88).
Aa
Black text reads best on this color (7.59:1).
About this color
#28B258 is a medium-light, vivid green. In OKLCH its lightness is 67%, its chroma 0.172 and its hue 150°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Green (#39AD48), ΔE 0.018 away. Black text reads best on it, at 7.59:1.
| Hue family | Greens |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.172) |
| Temperature | in between |
| Nearest name | Medium Green (#39AD48) |
| Black text | 7.59:1 |
| White text | 2.76:1 |
Values
| HEX | #28B258 |
| RGB | rgb(40, 178, 88) |
| HSL | hsl(141, 63%, 43%) |
| OKLCH | oklch(67.2% 0.172 149.8) |
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 #28B258 | 2.76:1 | Fails | Lc -58.1 | Large or bold text, headings |
| Black text on #28B258 | 7.59:1 | AAA | Lc 51.2 | Large or bold text, headings |
| #28B258 text on white | 2.76:1 | Fails | Lc 52.8 | Large or bold text, headings |
| #28B258 text on black | 7.59:1 | AAA | Lc -49.0 | 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
#EFF8F0
oklch(97% 0.014 148.8)
-
Step 100
100
#DCF0DF
oklch(93.6% 0.031 149.8)
-
Step 200
200
#BEE5C4
oklch(88.5% 0.061 149.4)
-
Step 300
300
#8DD49B
oklch(80.8% 0.107 149.7)
-
Step 400
400 (this color)
#28B258
oklch(67.2% 0.172 149.8)
-
Step 500
500
#00A54A
oklch(63.1% 0.175 149.7)
-
Step 600
600
#008B3D
oklch(55.6% 0.154 149.7)
-
Step 700
700
#007533
oklch(49.1% 0.136 149.9)
-
Step 800
800
#006028
oklch(42.7% 0.119 149.7)
-
Step 900
900
#005020
oklch(37.7% 0.105 149.6)
-
Step 950
950
#003011
oklch(27% 0.074 150)
#28B258 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) | #B3A250 | 0.141 |
| Deuteranopia (no green cones) | #A3975F | 0.139 |
| Tritanopia (no blue cones) | #00AF9D | 0.096 |
| Achromatopsia (no color) | #9B9B9B | 0.173 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28B258
#28B258
oklch(67.2% 0.172 149.8)
- #CF69C8
#CF69C8
oklch(67.2% 0.173 329.9)
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 #28B258, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Green #39AD48 ΔE 0.018
- Shamrock #01B44C ΔE 0.019
- Cool Green #33B864 ΔE 0.021
- Jade Green #2BAF6A ΔE 0.026
- Dark Pastel Green #56AE57 ΔE 0.028
- Seaweed Green #35AD6B ΔE 0.032
- Mid Green #50A747 ΔE 0.034
- Medium Sea Green #3CB371 ΔE 0.034
Use #28B258 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.