#21C2AD
Closest named color: Topaz (#13BBAF). oklch(73.3% 0.127 181), rgb(33, 194, 173).
Aa
Black text reads best on this color (9.38:1).
About this color
#21C2AD is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 73%, its chroma 0.127 and its hue 181°. Its hue sits on the cool side of the wheel. The nearest named color is Topaz (#13BBAF), ΔE 0.022 away. Black text reads best on it, at 9.38:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.127) |
| Temperature | cool |
| Nearest name | Topaz (#13BBAF) |
| Black text | 9.38:1 |
| White text | 2.23:1 |
Values
| HEX | #21C2AD |
| RGB | rgb(33, 194, 173) |
| HSL | hsl(172, 71%, 45%) |
| OKLCH | oklch(73.3% 0.127 181) |
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 #21C2AD | 2.23:1 | Fails | Lc -48.4 | Large or bold text, headings |
| Black text on #21C2AD | 9.38:1 | AAA | Lc 60.4 | Content text, not long reading |
| #21C2AD text on white | 2.23:1 | Fails | Lc 43.6 | Non-text elements, placeholder text |
| #21C2AD text on black | 9.38:1 | AAA | Lc -58.6 | 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
#EEF8F6
oklch(97.1% 0.011 182.9)
-
Step 100
100
#DAEFEB
oklch(93.6% 0.023 183.2)
-
Step 200
200
#BBE3DB
oklch(88.5% 0.043 181.8)
-
Step 300
300
#85D2C3
oklch(80.9% 0.08 180.5)
-
Step 400
400 (this color)
#21C2AD
oklch(73.3% 0.127 181)
-
Step 500
500
#009F8D
oklch(63% 0.114 181)
-
Step 600
600
#008677
oklch(55.6% 0.1 181.4)
-
Step 700
700
#007164
oklch(49.2% 0.089 181.2)
-
Step 800
800
#005C51
oklch(42.6% 0.077 181.1)
-
Step 900
900
#004D44
oklch(37.7% 0.068 181.7)
-
Step 950
950
#002E28
oklch(27% 0.049 181.5)
#21C2AD 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) | #B9B6AC | 0.134 |
| Deuteranopia (no green cones) | #A5A7AF | 0.128 |
| Tritanopia (no blue cones) | #00C6BC | 0.021 |
| Achromatopsia (no color) | #ADADAD | 0.128 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21C2AD
#21C2AD
oklch(73.3% 0.127 181)
- #E985A4
#E985A4
oklch(73.3% 0.127 0.8)
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 #21C2AD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Topaz #13BBAF ΔE 0.022
- Greeny Blue #42B395 ΔE 0.045
- Green Blue #01C08D ΔE 0.046
- Light Sea Green #20B2AA ΔE 0.046
- Greenblue #23C48B ΔE 0.050
- Dark Turquoise #00CED1 ΔE 0.053
- Medium Aquamarine #66CDAA ΔE 0.053
- Medium Turquoise #48D1CC ΔE 0.060
Use #21C2AD 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.