#00C5FA
Closest named color: Bright Sky Blue (#02CCFE). oklch(76.7% 0.147 226), rgb(0, 197, 250).
Aa
Black text reads best on this color (10.36:1).
About this color
#00C5FA is a medium-light, vivid teal or cyan. In OKLCH its lightness is 77%, its chroma 0.147 and its hue 226°. Its hue sits on the cool side of the wheel. The nearest named color is Bright Sky Blue (#02CCFE), ΔE 0.019 away. Black text reads best on it, at 10.36:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (77%) |
| Chroma | vivid (0.147) |
| Temperature | cool |
| Nearest name | Bright Sky Blue (#02CCFE) |
| Black text | 10.36:1 |
| White text | 2.02:1 |
Values
| HEX | #00C5FA |
| RGB | rgb(0, 197, 250) |
| HSL | hsl(193, 100%, 49%) |
| OKLCH | oklch(76.7% 0.147 226) |
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 #00C5FA | 2.02:1 | Fails | Lc -43.1 | Non-text elements, placeholder text |
| Black text on #00C5FA | 10.36:1 | AAA | Lc 65.3 | Content text, not long reading |
| #00C5FA text on white | 2.02:1 | Fails | Lc 38.6 | Non-text elements, placeholder text |
| #00C5FA text on black | 10.36:1 | AAA | Lc -63.7 | 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
#E9F8FF
oklch(97% 0.018 227.3)
-
Step 100
100
#CEF0FF
oklch(93.5% 0.041 226.3)
-
Step 200
200
#A4E4FF
oklch(88.5% 0.074 226)
-
Step 300
300 (this color)
#00C5FA
oklch(76.7% 0.147 226)
-
Step 400
400
#00B1E0
oklch(70.8% 0.135 225.5)
-
Step 500
500
#0097C1
oklch(63% 0.121 226.4)
-
Step 600
600
#007FA3
oklch(55.6% 0.107 226.4)
-
Step 700
700
#006B89
oklch(49.1% 0.094 225.7)
-
Step 800
800
#005771
oklch(42.6% 0.082 226.6)
-
Step 900
900
#00495F
oklch(37.8% 0.072 226.2)
-
Step 950
950
#002B3A
oklch(27% 0.052 227.2)
#00C5FA 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) | #A8C1FD | 0.109 |
| Deuteranopia (no green cones) | #8CAEF9 | 0.093 |
| Tritanopia (no blue cones) | #00D4D7 | 0.076 |
| Achromatopsia (no color) | #B6B6B6 | 0.147 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00C5FA
#00C5FA
oklch(76.7% 0.147 226)
- #FE935E
#FE935E
oklch(76.7% 0.146 46.1)
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 #00C5FA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bright Sky Blue #02CCFE ΔE 0.019
- Deep Sky Blue #00BFFF ΔE 0.020
- Vivid Sky Blue #4CC9F0 ΔE 0.031
- Lightblue #7BC8F6 ΔE 0.061
- Aqua Blue #02D8E9 ΔE 0.065
- Sky #82CAFC ΔE 0.069
- Dark Turquoise #00CED1 ΔE 0.072
- Light Sky Blue #87CEFA ΔE 0.078
Use #00C5FA 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.