#4BCAF9
Closest named color: Vivid Sky Blue (#4CC9F0). oklch(78.8% 0.128 226.7), rgb(75, 202, 249).
Aa
Black text reads best on this color (11.11:1).
About this color
#4BCAF9 is a light, moderately saturated teal or cyan. In OKLCH its lightness is 79%, its chroma 0.128 and its hue 227°. Its hue sits on the cool side of the wheel. The nearest named color is Vivid Sky Blue (#4CC9F0), ΔE 0.013 away. Black text reads best on it, at 11.11:1.
| Hue family | Teals and cyans |
| Lightness | light (79%) |
| Chroma | moderately saturated (0.128) |
| Temperature | cool |
| Nearest name | Vivid Sky Blue (#4CC9F0) |
| Black text | 11.11:1 |
| White text | 1.88:1 |
Values
| HEX | #4BCAF9 |
| RGB | rgb(75, 202, 249) |
| HSL | hsl(196, 94%, 64%) |
| OKLCH | oklch(78.8% 0.128 226.7) |
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 #4BCAF9 | 1.88:1 | Fails | Lc -39.8 | Non-text elements, placeholder text |
| Black text on #4BCAF9 | 11.11:1 | AAA | Lc 68.3 | Content text, not long reading |
| #4BCAF9 text on white | 1.88:1 | Fails | Lc 35.5 | Non-text elements, placeholder text |
| #4BCAF9 text on black | 11.11:1 | AAA | Lc -67.0 | 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
#EAF8FE
oklch(97% 0.017 225.2)
-
Step 100
100
#D1F0FD
oklch(93.7% 0.037 225)
-
Step 200
200
#A7E3FE
oklch(88.4% 0.071 227.5)
-
Step 300
300 (this color)
#4BCAF9
oklch(78.8% 0.128 226.7)
-
Step 400
400
#00B0E2
oklch(70.6% 0.137 227.2)
-
Step 500
500
#0097C2
oklch(63.1% 0.122 226.9)
-
Step 600
600
#007FA3
oklch(55.6% 0.107 226.4)
-
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)
#4BCAF9 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) | #B1C6FB | 0.095 |
| Deuteranopia (no green cones) | #99B5F8 | 0.083 |
| Tritanopia (no blue cones) | #00D8D9 | 0.073 |
| Achromatopsia (no color) | #BCBCBC | 0.128 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4BCAF9
#4BCAF9
oklch(78.8% 0.128 226.7)
- #FD9F71
#FD9F71
oklch(78.8% 0.128 46.4)
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 #4BCAF9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vivid Sky Blue #4CC9F0 ΔE 0.013
- Bright Sky Blue #02CCFE ΔE 0.021
- Lightblue #7BC8F6 ΔE 0.035
- Deep Sky Blue #00BFFF ΔE 0.043
- Sky #82CAFC ΔE 0.043
- Light Sky Blue #87CEFA ΔE 0.050
- Sky Blue #87CEEB ΔE 0.053
- Aqua Blue #02D8E9 ΔE 0.054
Use #4BCAF9 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.