#4FCFF1
Closest named color: Vivid Sky Blue (#4CC9F0). oklch(79.8% 0.12 218.9), rgb(79, 207, 241).
Aa
Black text reads best on this color (11.52:1).
About this color
#4FCFF1 is a light, moderately saturated teal or cyan. In OKLCH its lightness is 80%, its chroma 0.120 and its hue 219°. Its hue sits on the cool side of the wheel. The nearest named color is Vivid Sky Blue (#4CC9F0), ΔE 0.017 away. Black text reads best on it, at 11.52:1.
| Hue family | Teals and cyans |
| Lightness | light (80%) |
| Chroma | moderately saturated (0.120) |
| Temperature | cool |
| Nearest name | Vivid Sky Blue (#4CC9F0) |
| Black text | 11.52:1 |
| White text | 1.82:1 |
Values
| HEX | #4FCFF1 |
| RGB | rgb(79, 207, 241) |
| HSL | hsl(193, 85%, 63%) |
| OKLCH | oklch(79.8% 0.12 218.9) |
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 #4FCFF1 | 1.82:1 | Fails | Lc -37.8 | Non-text elements, placeholder text |
| Black text on #4FCFF1 | 11.52:1 | AAA | Lc 70.2 | Content text, not long reading |
| #4FCFF1 text on white | 1.82:1 | Fails | Lc 33.7 | Non-text elements, placeholder text |
| #4FCFF1 text on black | 11.52:1 | AAA | Lc -68.9 | 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
#EAF8FD
oklch(97% 0.016 221.1)
-
Step 100
100
#D1F0FA
oklch(93.6% 0.035 219.2)
-
Step 200
200
#A7E4F7
oklch(88.4% 0.067 219.1)
-
Step 300
300 (this color)
#4FCFF1
oklch(79.8% 0.12 218.9)
-
Step 400
400
#00B3D6
oklch(70.8% 0.128 218.5)
-
Step 500
500
#0099B8
oklch(63.1% 0.114 219)
-
Step 600
600
#00819B
oklch(55.7% 0.1 218.5)
-
Step 700
700
#006C83
oklch(49.1% 0.089 219.3)
-
Step 800
800
#00586B
oklch(42.5% 0.077 219.1)
-
Step 900
900
#004A5A
oklch(37.8% 0.068 218.5)
-
Step 950
950
#002C36
oklch(27% 0.048 217.4)
#4FCFF1 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) | #BAC9F3 | 0.103 |
| Deuteranopia (no green cones) | #A3B9F1 | 0.091 |
| Tritanopia (no blue cones) | #00DADA | 0.057 |
| Achromatopsia (no color) | #C0C0C0 | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4FCFF1
#4FCFF1
oklch(79.8% 0.12 218.9)
- #FFA183
#FFA183
oklch(79.7% 0.12 38.5)
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 #4FCFF1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vivid Sky Blue #4CC9F0 ΔE 0.017
- Bright Sky Blue #02CCFE ΔE 0.032
- Aqua Blue #02D8E9 ΔE 0.036
- Lightblue #7BC8F6 ΔE 0.038
- Sky Blue #87CEEB ΔE 0.044
- Sky #82CAFC ΔE 0.046
- Light Sky Blue #87CEFA ΔE 0.048
- Dark Turquoise #00CED1 ΔE 0.056
Use #4FCFF1 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.