#21C686
Closest named color: Greenblue (#23C48B). oklch(73.3% 0.158 160.4), rgb(33, 198, 134).
Aa
Black text reads best on this color (9.48:1).
About this color
#21C686 is a medium-light, vivid green. In OKLCH its lightness is 73%, its chroma 0.158 and its hue 160°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Greenblue (#23C48B), ΔE 0.010 away. Black text reads best on it, at 9.48:1.
| Hue family | Greens |
| Lightness | medium-light (73%) |
| Chroma | vivid (0.158) |
| Temperature | in between |
| Nearest name | Greenblue (#23C48B) |
| Black text | 9.48:1 |
| White text | 2.21:1 |
Values
| HEX | #21C686 |
| RGB | rgb(33, 198, 134) |
| HSL | hsl(157, 71%, 45%) |
| OKLCH | oklch(73.3% 0.158 160.4) |
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 #21C686 | 2.21:1 | Fails | Lc -47.8 | Large or bold text, headings |
| Black text on #21C686 | 9.48:1 | AAA | Lc 60.9 | Content text, not long reading |
| #21C686 text on white | 2.21:1 | Fails | Lc 43.0 | Non-text elements, placeholder text |
| #21C686 text on black | 9.48:1 | AAA | Lc -59.1 | 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 400.
-
Step 50
50
#EEF8F2
oklch(97% 0.013 159.9)
-
Step 100
100
#DAF0E3
oklch(93.5% 0.029 159.9)
-
Step 200
200
#BBE5CD
oklch(88.5% 0.055 160)
-
Step 300
300
#85D5AB
oklch(81% 0.099 160.2)
-
Step 400
400 (this color)
#21C686
oklch(73.3% 0.158 160.4)
-
Step 500
500
#00A36B
oklch(63.1% 0.143 160.1)
-
Step 600
600
#00895A
oklch(55.6% 0.125 160.5)
-
Step 700
700
#00734B
oklch(49% 0.11 160.6)
-
Step 800
800
#005F3D
oklch(42.9% 0.096 160.4)
-
Step 900
900
#004F32
oklch(37.7% 0.085 160.4)
-
Step 950
950
#002F1C
oklch(26.9% 0.06 160.5)
#21C686 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) | #C3B682 | 0.149 |
| Deuteranopia (no green cones) | #B1A98A | 0.145 |
| Tritanopia (no blue cones) | #00C5B5 | 0.067 |
| Achromatopsia (no color) | #AEAEAE | 0.159 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21C686
#21C686
oklch(73.3% 0.158 160.4)
- #E97DC7
#E97DC7
oklch(73.3% 0.159 340.4)
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 #21C686, closest first.
No curated palette has a color within ΔE 0.04 of #21C686.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greenblue #23C48B ΔE 0.010
- Green Blue #01C08D ΔE 0.023
- Dark Mint Green #20C073 ΔE 0.026
- Dark Mint #48C072 ΔE 0.026
- Algae Green #21C36F ΔE 0.028
- Seaweed #18D17B ΔE 0.039
- Soft Green #6FC276 ΔE 0.044
- Emerald #06D6A0 ΔE 0.048
Use #21C686 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.