#4BB1F7
Closest named color: Deep Sky Blue (#00BFFF). oklch(73.1% 0.138 242.2), rgb(75, 177, 247).
Aa
Black text reads best on this color (8.93:1).
About this color
#4BB1F7 is a medium-light, moderately saturated blue. In OKLCH its lightness is 73%, its chroma 0.138 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.039 away. Black text reads best on it, at 8.93:1.
| Hue family | Blues |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.138) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 8.93:1 |
| White text | 2.35:1 |
Values
| HEX | #4BB1F7 |
| RGB | rgb(75, 177, 247) |
| HSL | hsl(204, 91%, 63%) |
| OKLCH | oklch(73.1% 0.138 242.2) |
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 #4BB1F7 | 2.35:1 | Fails | Lc -50.9 | Large or bold text, headings |
| Black text on #4BB1F7 | 8.93:1 | AAA | Lc 57.9 | Large or bold text, headings |
| #4BB1F7 text on white | 2.35:1 | Fails | Lc 46.0 | Large or bold text, headings |
| #4BB1F7 text on black | 8.93:1 | AAA | Lc -56.0 | 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
#EFF7FD
oklch(97.2% 0.012 239.9)
-
Step 100
100
#DCECFA
oklch(93.5% 0.026 244.4)
-
Step 200
200
#BEDEF7
oklch(88.5% 0.048 241.7)
-
Step 300
300
#8EC8F4
oklch(80.9% 0.087 241.8)
-
Step 400
400 (this color)
#4BB1F7
oklch(73.1% 0.138 242.2)
-
Step 500
500
#0091DC
oklch(63% 0.151 242.6)
-
Step 600
600
#007AB9
oklch(55.5% 0.132 242.1)
-
Step 700
700
#00679D
oklch(49.2% 0.117 242)
-
Step 800
800
#005481
oklch(42.7% 0.101 241.9)
-
Step 900
900
#00466D
oklch(37.8% 0.09 242.2)
-
Step 950
950
#002943
oklch(27% 0.065 242.6)
#4BB1F7 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) | #91B2FA | 0.067 |
| Deuteranopia (no green cones) | #79A2F6 | 0.052 |
| Tritanopia (no blue cones) | #00C2C9 | 0.098 |
| Achromatopsia (no color) | #A9A9A9 | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4BB1F7
#4BB1F7
oklch(73.1% 0.138 242.2)
- #E59240
#E59240
oklch(73.1% 0.138 62)
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 #4BB1F7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.039
- Carolina Blue #8AB8FE ΔE 0.064
- Vivid Sky Blue #4CC9F0 ΔE 0.070
- Bright Sky Blue #02CCFE ΔE 0.072
- Cornflower Blue #6495ED ΔE 0.073
- Chefchaouen Blue #4895EF ΔE 0.075
- Lightblue #7BC8F6 ΔE 0.080
- Turquoise Blue #06B1C4 ΔE 0.085
Use #4BB1F7 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.