#21D08E
Closest named color: Emerald (#06D6A0). oklch(76% 0.164 160.8), rgb(33, 208, 142).
Aa
Black text reads best on this color (10.47:1).
About this color
#21D08E is a medium-light, vivid green. In OKLCH its lightness is 76%, its chroma 0.164 and its hue 161°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Emerald (#06D6A0), ΔE 0.024 away. Black text reads best on it, at 10.47:1.
| Hue family | Greens |
| Lightness | medium-light (76%) |
| Chroma | vivid (0.164) |
| Temperature | in between |
| Nearest name | Emerald (#06D6A0) |
| Black text | 10.47:1 |
| White text | 2.00:1 |
Values
| HEX | #21D08E |
| RGB | rgb(33, 208, 142) |
| HSL | hsl(157, 73%, 47%) |
| OKLCH | oklch(76% 0.164 160.8) |
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 #21D08E | 2.00:1 | Fails | Lc -42.7 | Non-text elements, placeholder text |
| Black text on #21D08E | 10.47:1 | AAA | Lc 65.6 | Content text, not long reading |
| #21D08E text on white | 2.00:1 | Fails | Lc 38.3 | Non-text elements, placeholder text |
| #21D08E text on black | 10.47:1 | AAA | Lc -64.1 | 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
#EAFAF1
oklch(97.1% 0.021 161.5)
-
Step 100
100
#CFF4E0
oklch(93.5% 0.047 161.8)
-
Step 200
200
#A3ECC6
oklch(88.5% 0.09 161.1)
-
Step 300
300 (this color)
#21D08E
oklch(76% 0.164 160.8)
-
Step 400
400
#00BE7F
oklch(70.8% 0.158 160.7)
-
Step 500
500
#00A36C
oklch(63.2% 0.142 160.5)
-
Step 600
600
#00895B
oklch(55.6% 0.124 161)
-
Step 700
700
#00734C
oklch(49.1% 0.109 161.2)
-
Step 800
800
#005E3D
oklch(42.6% 0.095 160.9)
-
Step 900
900
#004F32
oklch(37.7% 0.085 160.4)
-
Step 950
950
#002F1C
oklch(26.9% 0.06 160.5)
#21D08E 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) | #CDC08A | 0.155 |
| Deuteranopia (no green cones) | #B9B192 | 0.151 |
| Tritanopia (no blue cones) | #00CFBF | 0.069 |
| Achromatopsia (no color) | #B7B7B7 | 0.165 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21D08E
#21D08E
oklch(76% 0.164 160.8)
- #F584D0
#F584D0
oklch(76.1% 0.164 341)
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 #21D08E, closest first.
No curated palette has a color within ΔE 0.04 of #21D08E.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Emerald #06D6A0 ΔE 0.024
- Seaweed #18D17B ΔE 0.026
- Greenblue #23C48B ΔE 0.034
- Algae Green #21C36F ΔE 0.046
- Dark Mint #48C072 ΔE 0.047
- Aqua Green #12E193 ΔE 0.047
- Green Blue #01C08D ΔE 0.048
- Dark Mint Green #20C073 ΔE 0.050
Use #21D08E 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.