#00A3D1
Closest named color: Turquoise Blue (#06B1C4). oklch(66.7% 0.129 226.9), rgb(0, 163, 209).
Aa
Black text reads best on this color (7.15:1).
About this color
#00A3D1 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 67%, its chroma 0.129 and its hue 227°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.050 away. Black text reads best on it, at 7.15:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.129) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 7.15:1 |
| White text | 2.93:1 |
Values
| HEX | #00A3D1 |
| RGB | rgb(0, 163, 209) |
| HSL | hsl(193, 100%, 41%) |
| OKLCH | oklch(66.7% 0.129 226.9) |
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 #00A3D1 | 2.93:1 | Fails | Lc -60.4 | Content text, not long reading |
| Black text on #00A3D1 | 7.15:1 | AAA | Lc 48.9 | Large or bold text, headings |
| #00A3D1 text on white | 2.93:1 | Fails | Lc 55.1 | Large or bold text, headings |
| #00A3D1 text on black | 7.15:1 | AAA | Lc -46.7 | 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
#F0F7FA
oklch(97.2% 0.008 225.1)
-
Step 100
100
#DEEDF3
oklch(93.7% 0.018 223.6)
-
Step 200
200
#C2DEEB
oklch(88.4% 0.035 227.5)
-
Step 300
300
#95C9E0
oklch(80.8% 0.063 227)
-
Step 400
400
#52ADD1
oklch(70.6% 0.101 226.8)
-
Step 500
500 (this color)
#00A3D1
oklch(66.7% 0.129 226.9)
-
Step 600
600
#007FA4
oklch(55.6% 0.108 227.1)
-
Step 700
700
#006B8A
oklch(49.2% 0.095 226.5)
-
Step 800
800
#005772
oklch(42.6% 0.083 227.6)
-
Step 900
900
#00495F
oklch(37.8% 0.072 226.2)
-
Step 950
950
#002B3A
oklch(27% 0.052 227.2)
#00A3D1 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) | #8AA0D3 | 0.094 |
| Deuteranopia (no green cones) | #738FD0 | 0.082 |
| Tritanopia (no blue cones) | #00B0B2 | 0.069 |
| Achromatopsia (no color) | #979797 | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00A3D1
#00A3D1
oklch(66.7% 0.129 226.9)
- #D4794B
#D4794B
oklch(66.7% 0.129 46.5)
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 #00A3D1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.050
- Chefchaouen Blue #4895EF ΔE 0.071
- Dark Sky Blue #448EE4 ΔE 0.073
- Faded Blue #658CBB ΔE 0.075
- Blue NCS #118AB2 ΔE 0.077
- Greyblue #77A1B5 ΔE 0.077
- Cadet Blue #5F9EA0 ΔE 0.079
- Water Blue #0E87CC ΔE 0.079
Use #00A3D1 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.