#21A321
Closest named color: Kelly Green (#02AB2E). oklch(62.5% 0.196 142.8), rgb(33, 163, 33).
Aa
Black text reads best on this color (6.32:1).
About this color
#21A321 is a medium-light, vivid green. In OKLCH its lightness is 62%, its chroma 0.196 and its hue 143°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Kelly Green (#02AB2E), ΔE 0.022 away. Black text reads best on it, at 6.32:1.
| Hue family | Greens |
| Lightness | medium-light (62%) |
| Chroma | vivid (0.196) |
| Temperature | in between |
| Nearest name | Kelly Green (#02AB2E) |
| Black text | 6.32:1 |
| White text | 3.31:1 |
Values
| HEX | #21A321 |
| RGB | rgb(33, 163, 33) |
| HSL | hsl(120, 66%, 38%) |
| OKLCH | oklch(62.5% 0.196 142.8) |
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 #21A321 | 3.31:1 | AA large text | Lc -65.4 | Content text, not long reading |
| Black text on #21A321 | 6.32:1 | AA | Lc 44.1 | Non-text elements, placeholder text |
| #21A321 text on white | 3.31:1 | AA large text | Lc 60.0 | Large or bold text, headings |
| #21A321 text on black | 6.32:1 | AA | Lc -41.7 | Non-text elements, placeholder text |
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
#F1F8F0
oklch(97.2% 0.013 141.8)
-
Step 100
100
#E0EFDE
oklch(93.6% 0.028 142)
-
Step 200
200
#C5E3C3
oklch(88.5% 0.054 143.4)
-
Step 300
300
#9CD198
oklch(80.9% 0.096 142.9)
-
Step 400
400
#61B85C
oklch(70.6% 0.154 142.7)
-
Step 500
500 (this color)
#21A321
oklch(62.5% 0.196 142.8)
-
Step 600
600
#008C07
oklch(55.5% 0.187 142.8)
-
Step 700
700
#007604
oklch(49% 0.166 142.7)
-
Step 800
800
#006103
oklch(42.7% 0.144 142.8)
-
Step 900
900
#005102
oklch(37.7% 0.127 142.8)
-
Step 950
950
#073006
oklch(27.1% 0.082 142.6)
#21A321 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) | #A79300 | 0.139 |
| Deuteranopia (no green cones) | #998931 | 0.140 |
| Tritanopia (no blue cones) | #009E8B | 0.127 |
| Achromatopsia (no color) | #8D8D8D | 0.197 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21A321
#21A321
oklch(62.5% 0.196 142.8)
- #BD55CB
#BD55CB
oklch(62.5% 0.196 322.8)
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 #21A321, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Kelly Green #02AB2E ΔE 0.022
- Grassy Green #419C03 ΔE 0.022
- Grass Green #3F9B0B ΔE 0.024
- Medium Green #39AD48 ΔE 0.043
- Leaf Green #5CA904 ΔE 0.045
- Irish Green #019529 ΔE 0.045
- True Green #089404 ΔE 0.046
- Mid Green #50A747 ΔE 0.048
Use #21A321 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.