#21C12E
Closest named color: Shamrock Green (#02C14D). oklch(70.7% 0.222 143.5), rgb(33, 193, 46).
Aa
Black text reads best on this color (8.73:1).
About this color
#21C12E is a medium-light, vivid green. In OKLCH its lightness is 71%, its chroma 0.222 and its hue 144°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Shamrock Green (#02C14D), ΔE 0.023 away. Black text reads best on it, at 8.73:1.
| Hue family | Greens |
| Lightness | medium-light (71%) |
| Chroma | vivid (0.222) |
| Temperature | in between |
| Nearest name | Shamrock Green (#02C14D) |
| Black text | 8.73:1 |
| White text | 2.40:1 |
Values
| HEX | #21C12E |
| RGB | rgb(33, 193, 46) |
| HSL | hsl(125, 71%, 44%) |
| OKLCH | oklch(70.7% 0.222 143.5) |
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 #21C12E | 2.40:1 | Fails | Lc -51.6 | Large or bold text, headings |
| Black text on #21C12E | 8.73:1 | AAA | Lc 57.3 | Large or bold text, headings |
| #21C12E text on white | 2.40:1 | Fails | Lc 46.7 | Large or bold text, headings |
| #21C12E text on black | 8.73:1 | AAA | Lc -55.3 | 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 400.
-
Step 50
50
#EEF9EE
oklch(97.1% 0.019 145.4)
-
Step 100
100
#DBF1D9
oklch(93.5% 0.04 142.9)
-
Step 200
200
#BBE7B9
oklch(88.5% 0.077 143.8)
-
Step 300
300
#87D885
oklch(81% 0.139 143.6)
-
Step 400
400 (this color)
#21C12E
oklch(70.7% 0.222 143.5)
-
Step 500
500
#00A71B
oklch(63.2% 0.208 143.5)
-
Step 600
600
#008C15
oklch(55.5% 0.183 143.5)
-
Step 700
700
#007610
oklch(49.1% 0.161 143.5)
-
Step 800
800
#00610B
oklch(42.7% 0.141 143.5)
-
Step 900
900
#005108
oklch(37.7% 0.124 143.6)
-
Step 950
950
#003103
oklch(27.2% 0.089 143.6)
#21C12E 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) | #C5AE0A | 0.159 |
| Deuteranopia (no green cones) | #B4A33F | 0.159 |
| Tritanopia (no blue cones) | #00BBA5 | 0.142 |
| Achromatopsia (no color) | #A7A7A7 | 0.223 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21C12E
#21C12E
oklch(70.7% 0.222 143.5)
- #E065EE
#E065EE
oklch(70.7% 0.222 323.5)
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 #21C12E, closest first.
No curated palette has a color within ΔE 0.04 of #21C12E.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Shamrock Green #02C14D ΔE 0.023
- Frog Green #58BC08 ΔE 0.028
- Lime Green #32CD32 ΔE 0.036
- Leafy Green #51B73B ΔE 0.039
- Shamrock #01B44C ΔE 0.050
- Algae Green #21C36F ΔE 0.060
- Apple #6ECB3C ΔE 0.060
- Dark Lime Green #7EBD01 ΔE 0.061
Use #21C12E 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.