#21A2CB
Closest named color: Turquoise Blue (#06B1C4). oklch(66.5% 0.119 225.6), rgb(33, 162, 203).
Aa
Black text reads best on this color (7.09:1).
About this color
#21A2CB is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 66%, its chroma 0.119 and its hue 226°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.047 away. Black text reads best on it, at 7.09:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.119) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 7.09:1 |
| White text | 2.95:1 |
Values
| HEX | #21A2CB |
| RGB | rgb(33, 162, 203) |
| HSL | hsl(194, 72%, 46%) |
| OKLCH | oklch(66.5% 0.119 225.6) |
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 #21A2CB | 2.95:1 | Fails | Lc -61.0 | Content text, not long reading |
| Black text on #21A2CB | 7.09:1 | AAA | Lc 48.4 | Large or bold text, headings |
| #21A2CB text on white | 2.95:1 | Fails | Lc 55.7 | Large or bold text, headings |
| #21A2CB text on black | 7.09:1 | AAA | Lc -46.1 | 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 500.
-
Step 50
50
#F0F7F9
oklch(97.1% 0.008 216.6)
-
Step 100
100
#DFECF3
oklch(93.5% 0.017 230.9)
-
Step 200
200
#C3DEEA
oklch(88.4% 0.033 226.4)
-
Step 300
300
#98C9DE
oklch(80.9% 0.059 226.2)
-
Step 400
400
#59ADCD
oklch(70.7% 0.094 225.4)
-
Step 500
500 (this color)
#21A2CB
oklch(66.5% 0.119 225.6)
-
Step 600
600
#007FA2
oklch(55.5% 0.106 225.7)
-
Step 700
700
#006B89
oklch(49.1% 0.094 225.7)
-
Step 800
800
#005871
oklch(42.8% 0.081 225.4)
-
Step 900
900
#00495E
oklch(37.7% 0.071 225)
-
Step 950
950
#022B39
oklch(27% 0.05 226.3)
#21A2CB 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) | #8C9FCD | 0.090 |
| Deuteranopia (no green cones) | #768FCB | 0.079 |
| Tritanopia (no blue cones) | #00AEAF | 0.063 |
| Achromatopsia (no color) | #969696 | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21A2CB
#21A2CB
oklch(66.5% 0.119 225.6)
- #CF7B52
#CF7B52
oklch(66.5% 0.119 46.1)
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 #21A2CB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.047
- Greyblue #77A1B5 ΔE 0.069
- Cadet Blue #5F9EA0 ΔE 0.069
- Faded Blue #658CBB ΔE 0.069
- Blue NCS #118AB2 ΔE 0.073
- Chefchaouen Blue #4895EF ΔE 0.075
- Dark Sky Blue #448EE4 ΔE 0.076
- Light Sea Green #20B2AA ΔE 0.078
Use #21A2CB 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.