#21E484
Closest named color: Weird Green (#3AE57F). oklch(80.9% 0.197 154.3), rgb(33, 228, 132).
Aa
Black text reads best on this color (12.49:1).
About this color
#21E484 is a light, vivid green. In OKLCH its lightness is 81%, its chroma 0.197 and its hue 154°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Weird Green (#3AE57F), ΔE 0.010 away. Black text reads best on it, at 12.49:1.
| Hue family | Greens |
| Lightness | light (81%) |
| Chroma | vivid (0.197) |
| Temperature | in between |
| Nearest name | Weird Green (#3AE57F) |
| Black text | 12.49:1 |
| White text | 1.68:1 |
Values
| HEX | #21E484 |
| RGB | rgb(33, 228, 132) |
| HSL | hsl(150, 78%, 51%) |
| OKLCH | oklch(80.9% 0.197 154.3) |
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 #21E484 | 1.68:1 | Fails | Lc -32.8 | Non-text elements, placeholder text |
| Black text on #21E484 | 12.49:1 | AAA | Lc 74.7 | Content text, not long reading |
| #21E484 text on white | 1.68:1 | Fails | Lc 29.1 | Dividers and decoration only |
| #21E484 text on black | 12.49:1 | AAA | Lc -73.7 | Content text, not long reading |
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 300.
-
Step 50
50
#E9FBEE
oklch(97.1% 0.026 154.5)
-
Step 100
100
#CDF6D9
oklch(93.6% 0.058 154.4)
-
Step 200
200
#9EEFB9
oklch(88.6% 0.109 154.4)
-
Step 300
300 (this color)
#21E484
oklch(80.9% 0.197 154.3)
-
Step 400
400
#00BF6B
oklch(70.6% 0.177 154.2)
-
Step 500
500
#00A45B
oklch(63.1% 0.158 154.2)
-
Step 600
600
#008A4C
oklch(55.6% 0.139 154.3)
-
Step 700
700
#00743F
oklch(49.1% 0.123 154.3)
-
Step 800
800
#005F33
oklch(42.6% 0.106 154.6)
-
Step 900
900
#005029
oklch(37.8% 0.096 153.9)
-
Step 950
950
#003016
oklch(27.1% 0.069 153.7)
#21E484 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) | #E3D17D | 0.171 |
| Deuteranopia (no green cones) | #CFC28B | 0.169 |
| Tritanopia (no blue cones) | #00E1CC | 0.099 |
| Achromatopsia (no color) | #C8C8C8 | 0.198 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21E484
#21E484
oklch(80.9% 0.197 154.3)
- #FF96EB
#FF96EB
oklch(80.9% 0.162 334.3)
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 #21E484, closest first.
No curated palette has a color within ΔE 0.04 of #21E484.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Weird Green #3AE57F ΔE 0.010
- Aqua Green #12E193 ΔE 0.022
- Turquoise Green #04F489 ΔE 0.043
- Seaweed #18D17B ΔE 0.053
- Fresh Green #69D84F ΔE 0.054
- Minty Green #0BF77D ΔE 0.056
- Wintergreen #20F986 ΔE 0.059
- Medium Spring Green #00FA9A ΔE 0.059
Use #21E484 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.