#00DDEF
Closest named color: Aqua Blue (#02D8E9). oklch(81.9% 0.14 205.3), rgb(0, 221, 239).
Aa
Black text reads best on this color (12.58:1).
About this color
#00DDEF is a light, moderately saturated teal or cyan. In OKLCH its lightness is 82%, its chroma 0.140 and its hue 205°. Its hue sits on the cool side of the wheel. The nearest named color is Aqua Blue (#02D8E9), ΔE 0.014 away. Black text reads best on it, at 12.58:1.
| Hue family | Teals and cyans |
| Lightness | light (82%) |
| Chroma | moderately saturated (0.140) |
| Temperature | cool |
| Nearest name | Aqua Blue (#02D8E9) |
| Black text | 12.58:1 |
| White text | 1.66:1 |
Values
| HEX | #00DDEF |
| RGB | rgb(0, 221, 239) |
| HSL | hsl(185, 100%, 47%) |
| OKLCH | oklch(81.9% 0.14 205.3) |
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 #00DDEF | 1.66:1 | Fails | Lc -32.3 | Non-text elements, placeholder text |
| Black text on #00DDEF | 12.58:1 | AAA | Lc 75.2 | Fine for body text |
| #00DDEF text on white | 1.66:1 | Fails | Lc 28.6 | Dividers and decoration only |
| #00DDEF text on black | 12.58:1 | AAA | Lc -74.3 | 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
#E8F9FB
oklch(97% 0.018 205.3)
-
Step 100
100
#CCF2F7
oklch(93.6% 0.04 206.2)
-
Step 200
200
#9AE9F2
oklch(88.6% 0.078 204.9)
-
Step 300
300 (this color)
#00DDEF
oklch(81.9% 0.14 205.3)
-
Step 400
400
#00B6C4
oklch(70.8% 0.121 204.6)
-
Step 500
500
#009CA9
oklch(63.2% 0.108 205.2)
-
Step 600
600
#00838E
oklch(55.7% 0.095 205.2)
-
Step 700
700
#006E77
oklch(49.1% 0.084 204.7)
-
Step 800
800
#005A62
oklch(42.7% 0.073 205.3)
-
Step 900
900
#004B52
oklch(37.7% 0.064 205.5)
-
Step 950
950
#002D31
oklch(27.1% 0.046 204.1)
#00DDEF 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) | #C9D3F0 | 0.137 |
| Deuteranopia (no green cones) | #AEC0F0 | 0.126 |
| Tritanopia (no blue cones) | #00E7E2 | 0.038 |
| Achromatopsia (no color) | #C8C8C8 | 0.141 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00DDEF
#00DDEF
oklch(81.9% 0.14 205.3)
- #FFAAA2
#FFAAA2
oklch(81.9% 0.102 25.4)
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 #00DDEF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Aqua Blue #02D8E9 ΔE 0.014
- Turquoise #40E0D0 ΔE 0.048
- Medium Turquoise #48D1CC ΔE 0.050
- Dark Turquoise #00CED1 ΔE 0.052
- Vivid Sky Blue #4CC9F0 ΔE 0.057
- Bright Sky Blue #02CCFE ΔE 0.058
- Robin's Egg #6DEDFD ΔE 0.066
- Sky Blue #87CEEB ΔE 0.070
Use #00DDEF 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.