#21AC53
Closest named color: Medium Green (#39AD48). oklch(65.4% 0.171 149.7), rgb(33, 172, 83).
Aa
Black text reads best on this color (7.09:1).
About this color
#21AC53 is a medium-light, vivid green. In OKLCH its lightness is 65%, its chroma 0.171 and its hue 150°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Green (#39AD48), ΔE 0.015 away. Black text reads best on it, at 7.09:1.
| Hue family | Greens |
| Lightness | medium-light (65%) |
| Chroma | vivid (0.171) |
| Temperature | in between |
| Nearest name | Medium Green (#39AD48) |
| Black text | 7.09:1 |
| White text | 2.96:1 |
Values
| HEX | #21AC53 |
| RGB | rgb(33, 172, 83) |
| HSL | hsl(142, 68%, 40%) |
| OKLCH | oklch(65.4% 0.171 149.7) |
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 #21AC53 | 2.96:1 | Fails | Lc -61.0 | Content text, not long reading |
| Black text on #21AC53 | 7.09:1 | AAA | Lc 48.4 | Large or bold text, headings |
| #21AC53 text on white | 2.96:1 | Fails | Lc 55.6 | Large or bold text, headings |
| #21AC53 text on black | 7.09:1 | AAA | Lc -46.2 | 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
#F0F8F1
oklch(97.1% 0.013 149.3)
-
Step 100
100
#DFEFE1
oklch(93.6% 0.025 149.1)
-
Step 200
200
#C4E2C9
oklch(88.4% 0.046 150.1)
-
Step 300
300
#9AD0A4
oklch(80.8% 0.083 149.9)
-
Step 400
400
#5CB872
oklch(70.8% 0.135 149.6)
-
Step 500
500 (this color)
#21AC53
oklch(65.4% 0.171 149.7)
-
Step 600
600
#008B3D
oklch(55.6% 0.154 149.7)
-
Step 700
700
#007532
oklch(49.1% 0.137 149.6)
-
Step 800
800
#006028
oklch(42.7% 0.119 149.7)
-
Step 900
900
#005020
oklch(37.7% 0.105 149.6)
-
Step 950
950
#033012
oklch(27.2% 0.072 149.7)
#21AC53 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) | #AD9C4B | 0.140 |
| Deuteranopia (no green cones) | #9E925A | 0.138 |
| Tritanopia (no blue cones) | #00A997 | 0.095 |
| Achromatopsia (no color) | #969696 | 0.172 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21AC53
#21AC53
oklch(65.4% 0.171 149.7)
- #C864C2
#C864C2
oklch(65.4% 0.171 329.6)
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 #21AC53, closest first.
No curated palette has a color within ΔE 0.04 of #21AC53.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Green #39AD48 ΔE 0.015
- Mid Green #50A747 ΔE 0.026
- Shamrock #01B44C ΔE 0.027
- Jade Green #2BAF6A ΔE 0.028
- Seaweed Green #35AD6B ΔE 0.032
- Dark Pastel Green #56AE57 ΔE 0.034
- Kelly Green #02AB2E ΔE 0.036
- Cool Green #33B864 ΔE 0.039
Use #21AC53 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.