#2AD3DB
Closest named color: Aqua Blue (#02D8E9). oklch(79.1% 0.128 200), rgb(42, 211, 219).
Aa
Black text reads best on this color (11.43:1).
About this color
#2AD3DB is a light, moderately saturated teal or cyan. In OKLCH its lightness is 79%, its chroma 0.128 and its hue 200°. Its hue sits on the cool side of the wheel. The nearest named color is Aqua Blue (#02D8E9), ΔE 0.020 away. Black text reads best on it, at 11.43:1.
| Hue family | Teals and cyans |
| Lightness | light (79%) |
| Chroma | moderately saturated (0.128) |
| Temperature | cool |
| Nearest name | Aqua Blue (#02D8E9) |
| Black text | 11.43:1 |
| White text | 1.83:1 |
Values
| HEX | #2AD3DB |
| RGB | rgb(42, 211, 219) |
| HSL | hsl(183, 71%, 51%) |
| OKLCH | oklch(79.1% 0.128 200) |
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 #2AD3DB | 1.83:1 | Fails | Lc -38.0 | Non-text elements, placeholder text |
| Black text on #2AD3DB | 11.43:1 | AAA | Lc 70.0 | Content text, not long reading |
| #2AD3DB text on white | 1.83:1 | Fails | Lc 33.9 | Non-text elements, placeholder text |
| #2AD3DB text on black | 11.43:1 | AAA | Lc -68.7 | 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
#E9F9FA
oklch(97.1% 0.017 201.4)
-
Step 100
100
#CEF2F4
oklch(93.6% 0.037 200.7)
-
Step 200
200
#A1E8EC
oklch(88.6% 0.071 200.4)
-
Step 300
300 (this color)
#2AD3DB
oklch(79.1% 0.128 200)
-
Step 400
400
#00B7BE
oklch(70.8% 0.12 199.7)
-
Step 500
500
#009CA3
oklch(63% 0.107 200.4)
-
Step 600
600
#008489
oklch(55.7% 0.095 199.5)
-
Step 700
700
#006F73
oklch(49.2% 0.084 199.2)
-
Step 800
800
#005B5F
oklch(42.8% 0.073 200)
-
Step 900
900
#004C4F
oklch(37.8% 0.064 199.4)
-
Step 950
950
#002D2F
oklch(27% 0.046 199.4)
#2AD3DB 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) | #C3C9DC | 0.130 |
| Deuteranopia (no green cones) | #ABB8DC | 0.120 |
| Tritanopia (no blue cones) | #00DBD5 | 0.027 |
| Achromatopsia (no color) | #BFBFBF | 0.128 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2AD3DB
#2AD3DB
oklch(79.1% 0.128 200)
- #FF9A9B
#FF9A9B
oklch(79.1% 0.121 19.5)
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 #2AD3DB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Aqua Blue #02D8E9 ΔE 0.020
- Dark Turquoise #00CED1 ΔE 0.021
- Medium Turquoise #48D1CC ΔE 0.022
- Turquoise #40E0D0 ΔE 0.046
- Vivid Sky Blue #4CC9F0 ΔE 0.050
- Bright Sky Blue #02CCFE ΔE 0.060
- Seafoam Blue #78D1B6 ΔE 0.063
- Medium Aquamarine #66CDAA ΔE 0.068
Use #2AD3DB 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.