#4BB0FE
Closest named color: Deep Sky Blue (#00BFFF). oklch(73.2% 0.147 245.2), rgb(75, 176, 254).
Aa
Black text reads best on this color (8.94:1).
About this color
#4BB0FE is a medium-light, vivid blue. In OKLCH its lightness is 73%, its chroma 0.147 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.043 away. Black text reads best on it, at 8.94:1.
| Hue family | Blues |
| Lightness | medium-light (73%) |
| Chroma | vivid (0.147) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 8.94:1 |
| White text | 2.34:1 |
Values
| HEX | #4BB0FE |
| RGB | rgb(75, 176, 254) |
| HSL | hsl(206, 99%, 65%) |
| OKLCH | oklch(73.2% 0.147 245.2) |
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 #4BB0FE | 2.34:1 | Fails | Lc -50.9 | Large or bold text, headings |
| Black text on #4BB0FE | 8.94:1 | AAA | Lc 58.0 | Large or bold text, headings |
| #4BB0FE text on white | 2.34:1 | Fails | Lc 46.0 | Large or bold text, headings |
| #4BB0FE text on black | 8.94:1 | AAA | Lc -56.1 | 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
#DCECFB
oklch(93.6% 0.027 246.3)
-
Step 200
200
#BEDDF9
oklch(88.4% 0.051 245.7)
-
Step 300
300
#8EC7F8
oklch(80.8% 0.091 245.2)
-
Step 400
400 (this color)
#4BB0FE
oklch(73.2% 0.147 245.2)
-
Step 500
500
#0090E2
oklch(63.1% 0.159 245)
-
Step 600
600
#0079BF
oklch(55.7% 0.14 245)
-
Step 700
700
#0065A2
oklch(49% 0.125 245.5)
-
Step 800
800
#005386
oklch(42.8% 0.108 245.3)
-
Step 900
900
#004570
oklch(37.7% 0.095 244.9)
-
Step 950
950
#002945
oklch(27.1% 0.068 244.5)
#4BB0FE 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) | #8DB2FF | 0.063 |
| Deuteranopia (no green cones) | #74A1FD | 0.049 |
| Tritanopia (no blue cones) | #00C3CC | 0.106 |
| Achromatopsia (no color) | #A9A9A9 | 0.147 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4BB0FE
#4BB0FE
oklch(73.2% 0.147 245.2)
- #E69330
#E69330
oklch(73.2% 0.147 65.6)
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 #4BB0FE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.043
- Carolina Blue #8AB8FE ΔE 0.064
- Cornflower Blue #6495ED ΔE 0.070
- Chefchaouen Blue #4895EF ΔE 0.073
- Bright Sky Blue #02CCFE ΔE 0.076
- Vivid Sky Blue #4CC9F0 ΔE 0.077
- Periwinkle Blue #8F99FB ΔE 0.083
- Lightblue #7BC8F6 ΔE 0.085
Use #4BB0FE 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.