#28CB72
Closest named color: Seaweed (#18D17B). oklch(74.2% 0.181 153), rgb(40, 203, 114).
Aa
Black text reads best on this color (9.87:1).
About this color
#28CB72 is a medium-light, vivid green. In OKLCH its lightness is 74%, its chroma 0.181 and its hue 153°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Seaweed (#18D17B), ΔE 0.017 away. Black text reads best on it, at 9.87:1.
| Hue family | Greens |
| Lightness | medium-light (74%) |
| Chroma | vivid (0.181) |
| Temperature | in between |
| Nearest name | Seaweed (#18D17B) |
| Black text | 9.87:1 |
| White text | 2.12:1 |
Values
| HEX | #28CB72 |
| RGB | rgb(40, 203, 114) |
| HSL | hsl(147, 67%, 48%) |
| OKLCH | oklch(74.2% 0.181 153) |
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 #28CB72 | 2.12:1 | Fails | Lc -45.8 | Large or bold text, headings |
| Black text on #28CB72 | 9.87:1 | AAA | Lc 62.8 | Content text, not long reading |
| #28CB72 text on white | 2.12:1 | Fails | Lc 41.1 | Non-text elements, placeholder text |
| #28CB72 text on black | 9.87:1 | AAA | Lc -61.1 | Content text, not long reading |
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
#EEF9F1
oklch(97.2% 0.016 154.5)
-
Step 100
100
#DAF1E0
oklch(93.7% 0.033 153.7)
-
Step 200
200
#BBE6C6
oklch(88.6% 0.063 152.8)
-
Step 300
300
#85D69E
oklch(80.9% 0.113 153.1)
-
Step 400
400 (this color)
#28CB72
oklch(74.2% 0.181 153)
-
Step 500
500
#00A457
oklch(63% 0.162 153)
-
Step 600
600
#008A48
oklch(55.5% 0.143 153)
-
Step 700
700
#00743C
oklch(49% 0.126 153.1)
-
Step 800
800
#005F30
oklch(42.6% 0.109 153.1)
-
Step 900
900
#005027
oklch(37.8% 0.098 152.9)
-
Step 950
950
#003015
oklch(27.1% 0.07 152.9)
#28CB72 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) | #CBBA6B | 0.155 |
| Deuteranopia (no green cones) | #B9AD78 | 0.153 |
| Tritanopia (no blue cones) | #00C8B5 | 0.093 |
| Achromatopsia (no color) | #B2B2B2 | 0.182 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28CB72
#28CB72
oklch(74.2% 0.181 153)
- #EC7BDC
#EC7BDC
oklch(74.2% 0.181 332.8)
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 #28CB72, closest first.
No curated palette has a color within ΔE 0.04 of #28CB72.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Seaweed #18D17B ΔE 0.017
- Algae Green #21C36F ΔE 0.023
- Dark Mint #48C072 ΔE 0.033
- Dark Mint Green #20C073 ΔE 0.033
- Greenblue #23C48B ΔE 0.043
- Shamrock Green #02C14D ΔE 0.046
- Soft Green #6FC276 ΔE 0.049
- Cool Green #33B864 ΔE 0.052
Use #28CB72 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.