#4FC3E1
Closest named color: Vivid Sky Blue (#4CC9F0). oklch(76.3% 0.111 218), rgb(79, 195, 225).
Aa
Black text reads best on this color (10.22:1).
About this color
#4FC3E1 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 76%, its chroma 0.111 and its hue 218°. Its hue sits on the cool side of the wheel. The nearest named color is Vivid Sky Blue (#4CC9F0), ΔE 0.023 away. Black text reads best on it, at 10.22:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (76%) |
| Chroma | moderately saturated (0.111) |
| Temperature | cool |
| Nearest name | Vivid Sky Blue (#4CC9F0) |
| Black text | 10.22:1 |
| White text | 2.05:1 |
Values
| HEX | #4FC3E1 |
| RGB | rgb(79, 195, 225) |
| HSL | hsl(192, 71%, 60%) |
| OKLCH | oklch(76.3% 0.111 218) |
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 #4FC3E1 | 2.05:1 | Fails | Lc -44.3 | Non-text elements, placeholder text |
| Black text on #4FC3E1 | 10.22:1 | AAA | Lc 64.2 | Content text, not long reading |
| #4FC3E1 text on white | 2.05:1 | Fails | Lc 39.7 | Non-text elements, placeholder text |
| #4FC3E1 text on black | 10.22:1 | AAA | Lc -62.6 | 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
#EBF8FC
oklch(97.1% 0.015 218)
-
Step 100
100
#D3F0F8
oklch(93.7% 0.032 216.2)
-
Step 200
200
#ABE4F4
oklch(88.5% 0.062 216.9)
-
Step 300
300 (this color)
#4FC3E1
oklch(76.3% 0.111 218)
-
Step 400
400
#00B3D5
oklch(70.8% 0.127 217.9)
-
Step 500
500
#0099B7
oklch(63.1% 0.114 218.3)
-
Step 600
600
#00819A
oklch(55.7% 0.1 217.7)
-
Step 700
700
#006C82
oklch(49.1% 0.088 218.4)
-
Step 800
800
#00596B
oklch(42.8% 0.077 217.7)
-
Step 900
900
#004A59
oklch(37.7% 0.067 217.2)
-
Step 950
950
#002C36
oklch(27% 0.048 217.4)
#4FC3E1 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) | #B0BEE3 | 0.096 |
| Deuteranopia (no green cones) | #9BAEE1 | 0.087 |
| Tritanopia (no blue cones) | #00CDCC | 0.054 |
| Achromatopsia (no color) | #B5B5B5 | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4FC3E1
#4FC3E1
oklch(76.3% 0.111 218)
- #EF997E
#EF997E
oklch(76.4% 0.111 38.2)
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 #4FC3E1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vivid Sky Blue #4CC9F0 ΔE 0.023
- Bright Sky Blue #02CCFE ΔE 0.044
- Dark Turquoise #00CED1 ΔE 0.050
- Lightblue #7BC8F6 ΔE 0.051
- Deep Sky Blue #00BFFF ΔE 0.053
- Aqua Blue #02D8E9 ΔE 0.057
- Medium Turquoise #48D1CC ΔE 0.057
- Sky Blue #87CEEB ΔE 0.061
Use #4FC3E1 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.