#21AC42
Closest named color: Medium Green (#39AD48). oklch(65.2% 0.185 146.4), rgb(33, 172, 66).
Aa
Black text reads best on this color (7.04:1).
About this color
#21AC42 is a medium-light, vivid green. In OKLCH its lightness is 65%, its chroma 0.185 and its hue 146°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Green (#39AD48), ΔE 0.014 away. Black text reads best on it, at 7.04:1.
| Hue family | Greens |
| Lightness | medium-light (65%) |
| Chroma | vivid (0.185) |
| Temperature | in between |
| Nearest name | Medium Green (#39AD48) |
| Black text | 7.04:1 |
| White text | 2.98:1 |
Values
| HEX | #21AC42 |
| RGB | rgb(33, 172, 66) |
| HSL | hsl(134, 68%, 40%) |
| OKLCH | oklch(65.2% 0.185 146.4) |
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 #21AC42 | 2.98:1 | Fails | Lc -61.2 | Content text, not long reading |
| Black text on #21AC42 | 7.04:1 | AAA | Lc 48.2 | Large or bold text, headings |
| #21AC42 text on white | 2.98:1 | Fails | Lc 55.9 | Large or bold text, headings |
| #21AC42 text on black | 7.04:1 | AAA | Lc -45.9 | 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
#F0F8F1
oklch(97.1% 0.013 149.3)
-
Step 100
100
#DFEFE0
oklch(93.6% 0.026 147.1)
-
Step 200
200
#C4E3C6
oklch(88.5% 0.051 146.9)
-
Step 300
300
#9AD19E
oklch(80.9% 0.091 146.5)
-
Step 400
400
#5CB868
oklch(70.6% 0.145 146.6)
-
Step 500
500 (this color)
#21AC42
oklch(65.2% 0.185 146.4)
-
Step 600
600
#008C2E
oklch(55.7% 0.168 146.5)
-
Step 700
700
#007525
oklch(49% 0.148 146.5)
-
Step 800
800
#00601D
oklch(42.6% 0.128 146.5)
-
Step 900
900
#005017
oklch(37.6% 0.113 146.6)
-
Step 950
950
#04300D
oklch(27.1% 0.076 146.5)
#21AC42 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) | #AE9C36 | 0.141 |
| Deuteranopia (no green cones) | #9F914B | 0.142 |
| Tritanopia (no blue cones) | #00A895 | 0.111 |
| Achromatopsia (no color) | #959595 | 0.186 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21AC42
#21AC42
oklch(65.2% 0.185 146.4)
- #C860CA
#C860CA
oklch(65.3% 0.185 326.7)
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 #21AC42, closest first.
No curated palette has a color within ΔE 0.04 of #21AC42.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Green #39AD48 ΔE 0.014
- Kelly Green #02AB2E ΔE 0.019
- Shamrock #01B44C ΔE 0.022
- Mid Green #50A747 ΔE 0.031
- Grass #5CAC2D ΔE 0.036
- Leaf Green #5CA904 ΔE 0.040
- Dark Pastel Green #56AE57 ΔE 0.043
- Jade Green #2BAF6A ΔE 0.045
Use #21AC42 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.