#4FADEF
Closest named color: Deep Sky Blue (#00BFFF). oklch(71.9% 0.131 242.3), rgb(79, 173, 239).
Aa
Black text reads best on this color (8.55:1).
About this color
#4FADEF is a medium-light, moderately saturated blue. In OKLCH its lightness is 72%, its chroma 0.131 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.050 away. Black text reads best on it, at 8.55:1.
| Hue family | Blues |
| Lightness | medium-light (72%) |
| Chroma | moderately saturated (0.131) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 8.55:1 |
| White text | 2.45:1 |
Values
| HEX | #4FADEF |
| RGB | rgb(79, 173, 239) |
| HSL | hsl(205, 83%, 62%) |
| OKLCH | oklch(71.9% 0.131 242.3) |
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 #4FADEF | 2.45:1 | Fails | Lc -53.0 | Large or bold text, headings |
| Black text on #4FADEF | 8.55:1 | AAA | Lc 56.0 | Large or bold text, headings |
| #4FADEF text on white | 2.45:1 | Fails | Lc 48.0 | Large or bold text, headings |
| #4FADEF text on black | 8.55:1 | AAA | Lc -54.0 | Large or bold text, headings |
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 400.
-
Step 50
50
#EFF7FC
oklch(97.2% 0.011 234.8)
-
Step 100
100
#DDECF9
oklch(93.6% 0.024 244.1)
-
Step 200
200
#C0DDF5
oklch(88.4% 0.045 243.2)
-
Step 300
300
#92C8F1
oklch(81% 0.081 241.7)
-
Step 400
400 (this color)
#4FADEF
oklch(71.9% 0.131 242.3)
-
Step 500
500
#0091DC
oklch(63% 0.151 242.6)
-
Step 600
600
#007ABA
oklch(55.6% 0.133 242.5)
-
Step 700
700
#00669D
oklch(49% 0.118 242.7)
-
Step 800
800
#005482
oklch(42.8% 0.102 242.4)
-
Step 900
900
#00466D
oklch(37.8% 0.09 242.2)
-
Step 950
950
#002943
oklch(27% 0.065 242.6)
#4FADEF 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) | #8FAEF2 | 0.064 |
| Deuteranopia (no green cones) | #799EEE | 0.051 |
| Tritanopia (no blue cones) | #00BDC4 | 0.093 |
| Achromatopsia (no color) | #A5A5A5 | 0.131 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4FADEF
#4FADEF
oklch(71.9% 0.131 242.3)
- #DE9044
#DE9044
oklch(71.9% 0.131 62.2)
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 #4FADEF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.050
- Cornflower Blue #6495ED ΔE 0.064
- Chefchaouen Blue #4895EF ΔE 0.067
- Carolina Blue #8AB8FE ΔE 0.070
- Turquoise Blue #06B1C4 ΔE 0.077
- Vivid Sky Blue #4CC9F0 ΔE 0.077
- Bright Sky Blue #02CCFE ΔE 0.081
- Periwinkle Blue #8F99FB ΔE 0.084
Use #4FADEF 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.