#21CE8F
Closest named color: Emerald (#06D6A0). oklch(75.5% 0.16 161.7), rgb(33, 206, 143).
Aa
Black text reads best on this color (10.28:1).
About this color
#21CE8F is a medium-light, vivid green. In OKLCH its lightness is 76%, its chroma 0.160 and its hue 162°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Emerald (#06D6A0), ΔE 0.026 away. Black text reads best on it, at 10.28:1.
| Hue family | Greens |
| Lightness | medium-light (76%) |
| Chroma | vivid (0.160) |
| Temperature | in between |
| Nearest name | Emerald (#06D6A0) |
| Black text | 10.28:1 |
| White text | 2.04:1 |
Values
| HEX | #21CE8F |
| RGB | rgb(33, 206, 143) |
| HSL | hsl(158, 72%, 47%) |
| OKLCH | oklch(75.5% 0.16 161.7) |
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 #21CE8F | 2.04:1 | Fails | Lc -43.6 | Non-text elements, placeholder text |
| Black text on #21CE8F | 10.28:1 | AAA | Lc 64.8 | Content text, not long reading |
| #21CE8F text on white | 2.04:1 | Fails | Lc 39.2 | Non-text elements, placeholder text |
| #21CE8F text on black | 10.28:1 | AAA | Lc -63.2 | 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 400.
-
Step 50
50
#EEF8F3
oklch(97% 0.012 164.8)
-
Step 100
100
#DAF0E4
oklch(93.6% 0.028 162.1)
-
Step 200
200
#B9E5CE
oklch(88.4% 0.056 162.3)
-
Step 300
300
#82D5AC
oklch(80.9% 0.101 161.5)
-
Step 400
400 (this color)
#21CE8F
oklch(75.5% 0.16 161.7)
-
Step 500
500
#00A36E
oklch(63.2% 0.14 161.4)
-
Step 600
600
#00895C
oklch(55.7% 0.123 161.5)
-
Step 700
700
#00734D
oklch(49.1% 0.108 161.8)
-
Step 800
800
#005E3E
oklch(42.6% 0.094 161.6)
-
Step 900
900
#004F33
oklch(37.8% 0.084 161.3)
-
Step 950
950
#002F1D
oklch(27% 0.059 161.7)
#21CE8F 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) | #CBBE8B | 0.153 |
| Deuteranopia (no green cones) | #B7B093 | 0.148 |
| Tritanopia (no blue cones) | #00CEBD | 0.064 |
| Achromatopsia (no color) | #B5B5B5 | 0.161 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21CE8F
#21CE8F
oklch(75.5% 0.16 161.7)
- #F283CC
#F283CC
oklch(75.4% 0.16 341.7)
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 #21CE8F, closest first.
No curated palette has a color within ΔE 0.04 of #21CE8F.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Emerald #06D6A0 ΔE 0.026
- Greenblue #23C48B ΔE 0.028
- Seaweed #18D17B ΔE 0.030
- Green Blue #01C08D ΔE 0.042
- Dark Mint #48C072 ΔE 0.044
- Algae Green #21C36F ΔE 0.044
- Dark Mint Green #20C073 ΔE 0.046
- Soft Green #6FC276 ΔE 0.049
Use #21CE8F 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.