#4BC1EF
Closest named color: Vivid Sky Blue (#4CC9F0). oklch(76.3% 0.123 227.7), rgb(75, 193, 239).
Aa
Black text reads best on this color (10.17:1).
About this color
#4BC1EF is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 76%, its chroma 0.123 and its hue 228°. Its hue sits on the cool side of the wheel. The nearest named color is Vivid Sky Blue (#4CC9F0), ΔE 0.022 away. Black text reads best on it, at 10.17:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (76%) |
| Chroma | moderately saturated (0.123) |
| Temperature | cool |
| Nearest name | Vivid Sky Blue (#4CC9F0) |
| Black text | 10.17:1 |
| White text | 2.06:1 |
Values
| HEX | #4BC1EF |
| RGB | rgb(75, 193, 239) |
| HSL | hsl(197, 84%, 62%) |
| OKLCH | oklch(76.3% 0.123 227.7) |
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 #4BC1EF | 2.06:1 | Fails | Lc -44.5 | Non-text elements, placeholder text |
| Black text on #4BC1EF | 10.17:1 | AAA | Lc 64.0 | Content text, not long reading |
| #4BC1EF text on white | 2.06:1 | Fails | Lc 39.9 | Non-text elements, placeholder text |
| #4BC1EF text on black | 10.17:1 | AAA | Lc -62.4 | 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
#EBF8FE
oklch(97.1% 0.016 227)
-
Step 100
100
#D2EFFD
oklch(93.5% 0.036 228.4)
-
Step 200
200
#AAE3FD
oklch(88.6% 0.068 227.8)
-
Step 300
300 (this color)
#4BC1EF
oklch(76.3% 0.123 227.7)
-
Step 400
400
#00B0E3
oklch(70.7% 0.137 227.7)
-
Step 500
500
#0097C3
oklch(63.1% 0.123 227.5)
-
Step 600
600
#007FA5
oklch(55.7% 0.108 227.8)
-
Step 700
700
#006A8B
oklch(49% 0.096 228.3)
-
Step 800
800
#005772
oklch(42.6% 0.083 227.6)
-
Step 900
900
#004960
oklch(37.8% 0.073 227.3)
-
Step 950
950
#002B3A
oklch(27% 0.052 227.2)
#4BC1EF 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) | #A9BEF1 | 0.090 |
| Deuteranopia (no green cones) | #92ADEE | 0.078 |
| Tritanopia (no blue cones) | #00CED0 | 0.070 |
| Achromatopsia (no color) | #B4B4B4 | 0.123 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4BC1EF
#4BC1EF
oklch(76.3% 0.123 227.7)
- #F1996B
#F1996B
oklch(76.3% 0.122 47.9)
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 #4BC1EF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vivid Sky Blue #4CC9F0 ΔE 0.022
- Deep Sky Blue #00BFFF ΔE 0.033
- Bright Sky Blue #02CCFE ΔE 0.034
- Lightblue #7BC8F6 ΔE 0.046
- Sky #82CAFC ΔE 0.057
- Carolina Blue #8AB8FE ΔE 0.065
- Sky Blue #87CEEB ΔE 0.066
- Light Sky Blue #87CEFA ΔE 0.066
Use #4BC1EF 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.