#21A135
Closest named color: Grass Green (#3F9B0B). oklch(62.1% 0.182 145), rgb(33, 161, 53).
Aa
Black text reads best on this color (6.21:1).
About this color
#21A135 is a medium-light, vivid green. In OKLCH its lightness is 62%, its chroma 0.182 and its hue 145°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grass Green (#3F9B0B), ΔE 0.024 away. Black text reads best on it, at 6.21:1.
| Hue family | Greens |
| Lightness | medium-light (62%) |
| Chroma | vivid (0.182) |
| Temperature | in between |
| Nearest name | Grass Green (#3F9B0B) |
| Black text | 6.21:1 |
| White text | 3.37:1 |
Values
| HEX | #21A135 |
| RGB | rgb(33, 161, 53) |
| HSL | hsl(129, 66%, 38%) |
| OKLCH | oklch(62.1% 0.182 145) |
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 #21A135 | 3.37:1 | AA large text | Lc -66.2 | Content text, not long reading |
| Black text on #21A135 | 6.21:1 | AA | Lc 43.4 | Non-text elements, placeholder text |
| #21A135 text on white | 3.37:1 | AA large text | Lc 60.7 | Content text, not long reading |
| #21A135 text on black | 6.21:1 | AA | Lc -41.0 | 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
#F1F8F1
oklch(97.2% 0.012 145.5)
-
Step 100
100
#E0EFE0
oklch(93.7% 0.026 145.4)
-
Step 200
200
#C6E2C5
oklch(88.4% 0.049 144.2)
-
Step 300
300
#9DD09D
oklch(80.8% 0.089 144.7)
-
Step 400
400
#62B766
oklch(70.6% 0.142 144.8)
-
Step 500
500 (this color)
#21A135
oklch(62.1% 0.182 145)
-
Step 600
600
#008C23
oklch(55.6% 0.175 144.9)
-
Step 700
700
#00761C
oklch(49.2% 0.155 144.9)
-
Step 800
800
#006116
oklch(42.8% 0.135 145)
-
Step 900
900
#005110
oklch(37.8% 0.119 144.9)
-
Step 950
950
#072F0C
oklch(26.9% 0.074 145.1)
#21A135 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) | #A49227 | 0.135 |
| Deuteranopia (no green cones) | #96883F | 0.135 |
| Tritanopia (no blue cones) | #009D8B | 0.112 |
| Achromatopsia (no color) | #8C8C8C | 0.183 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21A135
#21A135
oklch(62.1% 0.182 145)
- #BB58C2
#BB58C2
oklch(62.1% 0.183 324.9)
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 #21A135, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grass Green #3F9B0B ΔE 0.024
- Grassy Green #419C03 ΔE 0.025
- Kelly Green #02AB2E ΔE 0.031
- Irish Green #019529 ΔE 0.038
- Medium Green #39AD48 ΔE 0.041
- Mid Green #50A747 ΔE 0.041
- True Green #089404 ΔE 0.045
- Kelley Green #009337 ΔE 0.045
Use #21A135 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.