#21B76E
Closest named color: Cool Green (#33B864). oklch(68.8% 0.16 155.4), rgb(33, 183, 110).
Aa
Black text reads best on this color (8.06:1).
About this color
#21B76E is a medium-light, vivid green. In OKLCH its lightness is 69%, its chroma 0.160 and its hue 155°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Cool Green (#33B864), ΔE 0.014 away. Black text reads best on it, at 8.06:1.
| Hue family | Greens |
| Lightness | medium-light (69%) |
| Chroma | vivid (0.160) |
| Temperature | in between |
| Nearest name | Cool Green (#33B864) |
| Black text | 8.06:1 |
| White text | 2.60:1 |
Values
| HEX | #21B76E |
| RGB | rgb(33, 183, 110) |
| HSL | hsl(151, 69%, 42%) |
| OKLCH | oklch(68.8% 0.16 155.4) |
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 #21B76E | 2.60:1 | Fails | Lc -55.4 | Large or bold text, headings |
| Black text on #21B76E | 8.06:1 | AAA | Lc 53.7 | Large or bold text, headings |
| #21B76E text on white | 2.60:1 | Fails | Lc 50.3 | Large or bold text, headings |
| #21B76E text on black | 8.06:1 | AAA | Lc -51.6 | 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
#EFF8F2
oklch(97.1% 0.012 157)
-
Step 100
100
#DBF0E2
oklch(93.6% 0.029 156.6)
-
Step 200
200
#BDE5CA
oklch(88.6% 0.056 155.6)
-
Step 300
300
#8AD4A5
oklch(80.9% 0.1 155.6)
-
Step 400
400 (this color)
#21B76E
oklch(68.8% 0.16 155.4)
-
Step 500
500
#00A45F
oklch(63.2% 0.155 155.5)
-
Step 600
600
#008A4F
oklch(55.7% 0.136 155.4)
-
Step 700
700
#007442
oklch(49.1% 0.12 155.6)
-
Step 800
800
#005F35
oklch(42.7% 0.104 155.6)
-
Step 900
900
#004F2B
oklch(37.6% 0.092 155.5)
-
Step 950
950
#003018
oklch(27.2% 0.067 155.5)
#21B76E 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) | #B6A869 | 0.142 |
| Deuteranopia (no green cones) | #A59B73 | 0.141 |
| Tritanopia (no blue cones) | #00B5A5 | 0.079 |
| Achromatopsia (no color) | #A0A0A0 | 0.161 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21B76E
#21B76E
oklch(68.8% 0.16 155.4)
- #D670C1
#D670C1
oklch(68.8% 0.161 335.5)
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 #21B76E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Green #33B864 ΔE 0.014
- Green Teal #0CB577 ΔE 0.015
- Medium Sea Green #3CB371 ΔE 0.017
- Dark Seafoam #1FB57A ΔE 0.018
- Jade Green #2BAF6A ΔE 0.022
- Dark Mint Green #20C073 ΔE 0.025
- Bluey Green #2BB179 ΔE 0.026
- Seaweed Green #35AD6B ΔE 0.028
Use #21B76E 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.