#4BBBF4
Closest named color: Deep Sky Blue (#00BFFF). oklch(75.2% 0.129 234.6), rgb(75, 187, 244).
Aa
Black text reads best on this color (9.71:1).
About this color
#4BBBF4 is a medium-light, moderately saturated blue. In OKLCH its lightness is 75%, its chroma 0.129 and its hue 235°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.025 away. Black text reads best on it, at 9.71:1.
| Hue family | Blues |
| Lightness | medium-light (75%) |
| Chroma | moderately saturated (0.129) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 9.71:1 |
| White text | 2.16:1 |
Values
| HEX | #4BBBF4 |
| RGB | rgb(75, 187, 244) |
| HSL | hsl(200, 88%, 63%) |
| OKLCH | oklch(75.2% 0.129 234.6) |
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 #4BBBF4 | 2.16:1 | Fails | Lc -46.8 | Large or bold text, headings |
| Black text on #4BBBF4 | 9.71:1 | AAA | Lc 61.8 | Content text, not long reading |
| #4BBBF4 text on white | 2.16:1 | Fails | Lc 42.2 | Non-text elements, placeholder text |
| #4BBBF4 text on black | 9.71:1 | AAA | Lc -60.1 | 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
#DCEDF7
oklch(93.6% 0.023 233.4)
-
Step 200
200
#BDDFF3
oklch(88.5% 0.045 233.8)
-
Step 300
300
#8CCAED
oklch(80.9% 0.08 233.8)
-
Step 400
400 (this color)
#4BBBF4
oklch(75.2% 0.129 234.6)
-
Step 500
500
#0095CD
oklch(63.1% 0.132 234.2)
-
Step 600
600
#007DAD
oklch(55.6% 0.117 234.3)
-
Step 700
700
#006992
oklch(49.1% 0.103 234.3)
-
Step 800
800
#005679
oklch(42.8% 0.09 234.7)
-
Step 900
900
#004765
oklch(37.6% 0.08 234.9)
-
Step 950
950
#002A3E
oklch(26.9% 0.057 235.2)
#4BBBF4 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) | #9FBAF7 | 0.080 |
| Deuteranopia (no green cones) | #88A9F3 | 0.067 |
| Tritanopia (no blue cones) | #00CACE | 0.083 |
| Achromatopsia (no color) | #B0B0B0 | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4BBBF4
#4BBBF4
oklch(75.2% 0.129 234.6)
- #ED975A
#ED975A
oklch(75.2% 0.129 54.7)
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 #4BBBF4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.025
- Vivid Sky Blue #4CC9F0 ΔE 0.041
- Bright Sky Blue #02CCFE ΔE 0.046
- Lightblue #7BC8F6 ΔE 0.056
- Carolina Blue #8AB8FE ΔE 0.059
- Sky #82CAFC ΔE 0.066
- Light Sky Blue #87CEFA ΔE 0.077
- Turquoise Blue #06B1C4 ΔE 0.080
Use #4BBBF4 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.