#4FD4FF
Closest named color: Vivid Sky Blue (#4CC9F0). oklch(81.5% 0.128 223.4), rgb(79, 212, 255).
Aa
Black text reads best on this color (12.19:1).
About this color
#4FD4FF is a light, moderately saturated teal or cyan. In OKLCH its lightness is 81%, its chroma 0.128 and its hue 223°. Its hue sits on the cool side of the wheel. The nearest named color is Vivid Sky Blue (#4CC9F0), ΔE 0.033 away. Black text reads best on it, at 12.19:1.
| Hue family | Teals and cyans |
| Lightness | light (81%) |
| Chroma | moderately saturated (0.128) |
| Temperature | cool |
| Nearest name | Vivid Sky Blue (#4CC9F0) |
| Black text | 12.19:1 |
| White text | 1.72:1 |
Values
| HEX | #4FD4FF |
| RGB | rgb(79, 212, 255) |
| HSL | hsl(195, 100%, 65%) |
| OKLCH | oklch(81.5% 0.128 223.4) |
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 #4FD4FF | 1.72:1 | Fails | Lc -34.6 | Non-text elements, placeholder text |
| Black text on #4FD4FF | 12.19:1 | AAA | Lc 73.1 | Content text, not long reading |
| #4FD4FF text on white | 1.72:1 | Fails | Lc 30.7 | Non-text elements, placeholder text |
| #4FD4FF text on black | 12.19:1 | AAA | Lc -72.0 | 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
#D0F0FC
oklch(93.6% 0.037 222.4)
-
Step 200
200
#A5E4FC
oklch(88.4% 0.072 223.6)
-
Step 300
300 (this color)
#4FD4FF
oklch(81.5% 0.128 223.4)
-
Step 400
400
#00B1DD
oklch(70.6% 0.133 223.9)
-
Step 500
500
#0098BD
oklch(63.1% 0.118 223.1)
-
Step 600
600
#0080A0
oklch(55.7% 0.104 223.4)
-
Step 700
700
#006B87
oklch(49% 0.092 224)
-
Step 800
800
#00586F
oklch(42.7% 0.08 223.4)
-
Step 900
900
#00495D
oklch(37.7% 0.071 223.8)
-
Step 950
950
#002B38
oklch(26.8% 0.05 223.6)
#4FD4FF 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) | #BCCFFF | 0.101 |
| Deuteranopia (no green cones) | #A3BEFF | 0.089 |
| Tritanopia (no blue cones) | #00E1E2 | 0.067 |
| Achromatopsia (no color) | #C5C5C5 | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4FD4FF
#4FD4FF
oklch(81.5% 0.128 223.4)
- #FFAB88
#FFAB88
oklch(81.5% 0.11 43.4)
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 #4FD4FF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vivid Sky Blue #4CC9F0 ΔE 0.033
- Bright Sky Blue #02CCFE ΔE 0.035
- Lightblue #7BC8F6 ΔE 0.040
- Light Sky Blue #87CEFA ΔE 0.043
- Sky #82CAFC ΔE 0.043
- Aqua Blue #02D8E9 ΔE 0.045
- Sky Blue #87CEEB ΔE 0.047
- Deep Sky Blue #00BFFF ΔE 0.068
Use #4FD4FF 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.