#00DADD
Closest named color: Aqua Blue (#02D8E9). oklch(80.5% 0.137 196.5), rgb(0, 218, 221).
Aa
Black text reads best on this color (12.07:1).
About this color
#00DADD is a light, moderately saturated teal or cyan. In OKLCH its lightness is 81%, its chroma 0.137 and its hue 197°. 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 12.07:1.
| Hue family | Teals and cyans |
| Lightness | light (81%) |
| Chroma | moderately saturated (0.137) |
| Temperature | cool |
| Nearest name | Aqua Blue (#02D8E9) |
| Black text | 12.07:1 |
| White text | 1.73:1 |
Values
| HEX | #00DADD |
| RGB | rgb(0, 218, 221) |
| HSL | hsl(181, 100%, 43%) |
| OKLCH | oklch(80.5% 0.137 196.5) |
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 #00DADD | 1.73:1 | Fails | Lc -34.7 | Non-text elements, placeholder text |
| Black text on #00DADD | 12.07:1 | AAA | Lc 72.9 | Content text, not long reading |
| #00DADD text on white | 1.73:1 | Fails | Lc 30.9 | Non-text elements, placeholder text |
| #00DADD text on black | 12.07:1 | AAA | Lc -71.9 | 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
#E8FAFA
oklch(97.2% 0.019 196.8)
-
Step 100
100
#CCF3F3
oklch(93.7% 0.04 196.5)
-
Step 200
200
#9CE9EA
oklch(88.5% 0.076 196.9)
-
Step 300
300 (this color)
#00DADD
oklch(80.5% 0.137 196.5)
-
Step 400
400
#00B7BA
oklch(70.7% 0.12 196.9)
-
Step 500
500
#009D9F
oklch(63.1% 0.107 196.4)
-
Step 600
600
#008486
oklch(55.6% 0.095 196.7)
-
Step 700
700
#006F71
oklch(49.1% 0.084 197)
-
Step 800
800
#005B5C
oklch(42.7% 0.073 196.1)
-
Step 900
900
#004C4D
oklch(37.8% 0.064 196.3)
-
Step 950
950
#002D2E
oklch(27% 0.046 197.1)
#00DADD 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) | #CACFDE | 0.142 |
| Deuteranopia (no green cones) | #B1BCDE | 0.133 |
| Tritanopia (no blue cones) | #00E2DA | 0.024 |
| Achromatopsia (no color) | #C4C4C4 | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00DADD
#00DADD
oklch(80.5% 0.137 196.5)
- #FFA1A6
#FFA1A6
oklch(80.5% 0.112 16.4)
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 #00DADD, closest first.
No curated palette has a color within ΔE 0.04 of #00DADD.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Aqua Blue #02D8E9 ΔE 0.020
- Medium Turquoise #48D1CC ΔE 0.030
- Turquoise #40E0D0 ΔE 0.032
- Dark Turquoise #00CED1 ΔE 0.034
- Vivid Sky Blue #4CC9F0 ΔE 0.064
- Seafoam Blue #78D1B6 ΔE 0.065
- Bright Sky Blue #02CCFE ΔE 0.071
- Medium Aquamarine #66CDAA ΔE 0.071
Use #00DADD 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.