#4BB0EA
Closest named color: Deep Sky Blue (#00BFFF). oklch(72.2% 0.126 237.4), rgb(75, 176, 234).
Aa
Black text reads best on this color (8.69:1).
About this color
#4BB0EA is a medium-light, moderately saturated blue. In OKLCH its lightness is 72%, its chroma 0.126 and its hue 237°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.046 away. Black text reads best on it, at 8.69:1.
| Hue family | Blues |
| Lightness | medium-light (72%) |
| Chroma | moderately saturated (0.126) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 8.69:1 |
| White text | 2.41:1 |
Values
| HEX | #4BB0EA |
| RGB | rgb(75, 176, 234) |
| HSL | hsl(202, 79%, 61%) |
| OKLCH | oklch(72.2% 0.126 237.4) |
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 #4BB0EA | 2.41:1 | Fails | Lc -52.2 | Large or bold text, headings |
| Black text on #4BB0EA | 8.69:1 | AAA | Lc 56.7 | Large or bold text, headings |
| #4BB0EA text on white | 2.41:1 | Fails | Lc 47.2 | Large or bold text, headings |
| #4BB0EA text on black | 8.69:1 | AAA | Lc -54.8 | 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
#DCEDF7
oklch(93.6% 0.023 233.4)
-
Step 200
200
#BFDEF3
oklch(88.5% 0.044 237.6)
-
Step 300
300
#90C9ED
oklch(80.9% 0.078 236.7)
-
Step 400
400 (this color)
#4BB0EA
oklch(72.2% 0.126 237.4)
-
Step 500
500
#0094D2
oklch(63.2% 0.138 237.1)
-
Step 600
600
#007CB1
oklch(55.6% 0.122 237.2)
-
Step 700
700
#006896
oklch(49.1% 0.108 237.6)
-
Step 800
800
#00557C
oklch(42.7% 0.094 237.9)
-
Step 900
900
#004768
oklch(37.7% 0.083 237.5)
-
Step 950
950
#002A40
oklch(27% 0.06 237.8)
#4BB0EA 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) | #95AFED | 0.073 |
| Deuteranopia (no green cones) | #7FA0E9 | 0.059 |
| Tritanopia (no blue cones) | #00BFC4 | 0.084 |
| Achromatopsia (no color) | #A7A7A7 | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4BB0EA
#4BB0EA
oklch(72.2% 0.126 237.4)
- #E09050
#E09050
oklch(72.3% 0.126 57.6)
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 #4BB0EA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.046
- Turquoise Blue #06B1C4 ΔE 0.067
- Vivid Sky Blue #4CC9F0 ΔE 0.068
- Carolina Blue #8AB8FE ΔE 0.071
- Bright Sky Blue #02CCFE ΔE 0.074
- Cornflower Blue #6495ED ΔE 0.075
- Chefchaouen Blue #4895EF ΔE 0.077
- Greyblue #77A1B5 ΔE 0.081
Use #4BB0EA 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.