#00ADD1
Closest named color: Turquoise Blue (#06B1C4). oklch(69.1% 0.126 219.8), rgb(0, 173, 209).
Aa
Black text reads best on this color (7.89:1).
About this color
#00ADD1 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 69%, its chroma 0.126 and its hue 220°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.026 away. Black text reads best on it, at 7.89:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.126) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 7.89:1 |
| White text | 2.65:1 |
Values
| HEX | #00ADD1 |
| RGB | rgb(0, 173, 209) |
| HSL | hsl(190, 100%, 41%) |
| OKLCH | oklch(69.1% 0.126 219.8) |
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 #00ADD1 | 2.65:1 | Fails | Lc -56.2 | Large or bold text, headings |
| Black text on #00ADD1 | 7.89:1 | AAA | Lc 53.0 | Large or bold text, headings |
| #00ADD1 text on white | 2.65:1 | Fails | Lc 51.1 | Large or bold text, headings |
| #00ADD1 text on black | 7.89:1 | AAA | Lc -50.9 | 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
#EEF7FA
oklch(97% 0.01 219.6)
-
Step 100
100
#DAEEF4
oklch(93.6% 0.023 217.6)
-
Step 200
200
#BAE1ED
oklch(88.6% 0.044 218.4)
-
Step 300
300
#85CDE4
oklch(80.9% 0.079 220.1)
-
Step 400
400 (this color)
#00ADD1
oklch(69.1% 0.126 219.8)
-
Step 500
500
#0099B9
oklch(63.1% 0.115 219.7)
-
Step 600
600
#00809C
oklch(55.5% 0.101 220.3)
-
Step 700
700
#006C83
oklch(49.1% 0.089 219.3)
-
Step 800
800
#00586C
oklch(42.6% 0.078 220.2)
-
Step 900
900
#004A5A
oklch(37.8% 0.068 218.5)
-
Step 950
950
#002C37
oklch(27.1% 0.049 219.4)
#00ADD1 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) | #97A8D3 | 0.104 |
| Deuteranopia (no green cones) | #8097D1 | 0.094 |
| Tritanopia (no blue cones) | #00B9B9 | 0.057 |
| Achromatopsia (no color) | #9F9F9F | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00ADD1
#00ADD1
oklch(69.1% 0.126 219.8)
- #DD7F5E
#DD7F5E
oklch(69.2% 0.126 40)
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 #00ADD1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.026
- Light Sea Green #20B2AA ΔE 0.065
- Greyblue #77A1B5 ΔE 0.073
- Topaz #13BBAF ΔE 0.074
- Deep Sky Blue #00BFFF ΔE 0.075
- Cadet Blue #5F9EA0 ΔE 0.077
- Bluegrey #85A3B2 ΔE 0.087
- Vivid Sky Blue #4CC9F0 ΔE 0.091
Use #00ADD1 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.