#21B32A
Closest named color: Shamrock (#01B44C). oklch(66.9% 0.209 143.4), rgb(33, 179, 42).
Aa
Black text reads best on this color (7.54:1).
About this color
#21B32A is a medium-light, vivid green. In OKLCH its lightness is 67%, its chroma 0.209 and its hue 143°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Shamrock (#01B44C), ΔE 0.026 away. Black text reads best on it, at 7.54:1.
| Hue family | Greens |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.209) |
| Temperature | in between |
| Nearest name | Shamrock (#01B44C) |
| Black text | 7.54:1 |
| White text | 2.78:1 |
Values
| HEX | #21B32A |
| RGB | rgb(33, 179, 42) |
| HSL | hsl(124, 69%, 42%) |
| OKLCH | oklch(66.9% 0.209 143.4) |
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 #21B32A | 2.78:1 | Fails | Lc -58.2 | Large or bold text, headings |
| Black text on #21B32A | 7.54:1 | AAA | Lc 51.0 | Large or bold text, headings |
| #21B32A text on white | 2.78:1 | Fails | Lc 53.0 | Large or bold text, headings |
| #21B32A text on black | 7.54:1 | AAA | Lc -48.9 | 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 500.
-
Step 50
50
#F0F8F0
oklch(97.1% 0.014 145.5)
-
Step 100
100
#DFEFDE
oklch(93.6% 0.028 143.7)
-
Step 200
200
#C4E3C2
oklch(88.4% 0.055 143.5)
-
Step 300
300
#99D296
oklch(80.9% 0.102 143.4)
-
Step 400
400
#59BA58
oklch(70.8% 0.164 143.4)
-
Step 500
500 (this color)
#21B32A
oklch(66.9% 0.209 143.4)
-
Step 600
600
#008C13
oklch(55.5% 0.183 143.4)
-
Step 700
700
#00760E
oklch(49.1% 0.162 143.4)
-
Step 800
800
#006109
oklch(42.7% 0.141 143.3)
-
Step 900
900
#005106
oklch(37.7% 0.125 143.3)
-
Step 950
950
#023004
oklch(26.9% 0.086 143.4)
#21B32A 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) | #B7A109 | 0.150 |
| Deuteranopia (no green cones) | #A79739 | 0.149 |
| Tritanopia (no blue cones) | #00AE99 | 0.133 |
| Achromatopsia (no color) | #9B9B9B | 0.210 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21B32A
#21B32A
oklch(66.9% 0.209 143.4)
- #D05EDD
#D05EDD
oklch(67% 0.209 323.5)
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 #21B32A, closest first.
No curated palette has a color within ΔE 0.04 of #21B32A.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Shamrock #01B44C ΔE 0.026
- Kelly Green #02AB2E ΔE 0.026
- Leafy Green #51B73B ΔE 0.034
- Medium Green #39AD48 ΔE 0.036
- Leaf Green #5CA904 ΔE 0.039
- Grass #5CAC2D ΔE 0.039
- Shamrock Green #02C14D ΔE 0.042
- Frog Green #58BC08 ΔE 0.045
Use #21B32A 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.