#4FBBF5
Closest named color: Deep Sky Blue (#00BFFF). oklch(75.4% 0.129 235.7), rgb(79, 187, 245).
Aa
Black text reads best on this color (9.75:1).
About this color
#4FBBF5 is a medium-light, moderately saturated blue. In OKLCH its lightness is 75%, its chroma 0.129 and its hue 236°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.027 away. Black text reads best on it, at 9.75:1.
| Hue family | Blues |
| Lightness | medium-light (75%) |
| Chroma | moderately saturated (0.129) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 9.75:1 |
| White text | 2.15:1 |
Values
| HEX | #4FBBF5 |
| RGB | rgb(79, 187, 245) |
| HSL | hsl(201, 89%, 64%) |
| OKLCH | oklch(75.4% 0.129 235.7) |
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 #4FBBF5 | 2.15:1 | Fails | Lc -46.6 | Large or bold text, headings |
| Black text on #4FBBF5 | 9.75:1 | AAA | Lc 62.0 | Content text, not long reading |
| #4FBBF5 text on white | 2.15:1 | Fails | Lc 42.0 | Non-text elements, placeholder text |
| #4FBBF5 text on black | 9.75:1 | AAA | Lc -60.3 | 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 400.
-
Step 50
50
#EFF7FC
oklch(97.2% 0.011 234.8)
-
Step 100
100
#DCEDF8
oklch(93.7% 0.023 236)
-
Step 200
200
#BEDEF3
oklch(88.4% 0.045 236.8)
-
Step 300
300
#8DC9EE
oklch(80.8% 0.081 236.2)
-
Step 400
400 (this color)
#4FBBF5
oklch(75.4% 0.129 235.7)
-
Step 500
500
#0094CF
oklch(63% 0.135 235.8)
-
Step 600
600
#007DAF
oklch(55.7% 0.119 235.4)
-
Step 700
700
#006994
oklch(49.2% 0.105 235.5)
-
Step 800
800
#00567A
oklch(42.8% 0.091 235.4)
-
Step 900
900
#004766
oklch(37.6% 0.081 235.8)
-
Step 950
950
#002A3F
oklch(27% 0.059 236.5)
#4FBBF5 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) | #9FBAF8 | 0.077 |
| Deuteranopia (no green cones) | #89AAF4 | 0.065 |
| Tritanopia (no blue cones) | #00CACF | 0.084 |
| Achromatopsia (no color) | #B1B1B1 | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4FBBF5
#4FBBF5
oklch(75.4% 0.129 235.7)
- #ED985A
#ED985A
oklch(75.4% 0.129 55.4)
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 #4FBBF5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.027
- Vivid Sky Blue #4CC9F0 ΔE 0.041
- Bright Sky Blue #02CCFE ΔE 0.046
- Lightblue #7BC8F6 ΔE 0.054
- Carolina Blue #8AB8FE ΔE 0.056
- Sky #82CAFC ΔE 0.064
- Light Sky Blue #87CEFA ΔE 0.075
- Sky Blue #87CEEB ΔE 0.079
Use #4FBBF5 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.