#4BB5DE
Closest named color: Deep Sky Blue (#00BFFF). oklch(72.8% 0.113 227.1), rgb(75, 181, 222).
Aa
Black text reads best on this color (8.96:1).
About this color
#4BB5DE is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 73%, its chroma 0.113 and its hue 227°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.050 away. Black text reads best on it, at 8.96:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.113) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 8.96:1 |
| White text | 2.34:1 |
Values
| HEX | #4BB5DE |
| RGB | rgb(75, 181, 222) |
| HSL | hsl(197, 69%, 58%) |
| OKLCH | oklch(72.8% 0.113 227.1) |
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 #4BB5DE | 2.34:1 | Fails | Lc -50.8 | Large or bold text, headings |
| Black text on #4BB5DE | 8.96:1 | AAA | Lc 58.1 | Large or bold text, headings |
| #4BB5DE text on white | 2.34:1 | Fails | Lc 45.9 | Large or bold text, headings |
| #4BB5DE text on black | 8.96:1 | AAA | Lc -56.2 | 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
#EFF7FA
oklch(97.1% 0.009 222.1)
-
Step 100
100
#DCEDF5
oklch(93.6% 0.021 227.5)
-
Step 200
200
#BFDFEE
oklch(88.5% 0.04 227.8)
-
Step 300
300
#90CAE4
oklch(80.8% 0.07 227.6)
-
Step 400
400 (this color)
#4BB5DE
oklch(72.8% 0.113 227.1)
-
Step 500
500
#0097C2
oklch(63.1% 0.122 226.9)
-
Step 600
600
#007FA4
oklch(55.6% 0.108 227.1)
-
Step 700
700
#006B8A
oklch(49.2% 0.095 226.5)
-
Step 800
800
#005772
oklch(42.6% 0.083 227.6)
-
Step 900
900
#00495F
oklch(37.8% 0.072 226.2)
-
Step 950
950
#002B3A
oklch(27% 0.052 227.2)
#4BB5DE 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) | #9FB2E0 | 0.083 |
| Deuteranopia (no green cones) | #8BA3DD | 0.073 |
| Tritanopia (no blue cones) | #00C1C2 | 0.066 |
| Achromatopsia (no color) | #A9A9A9 | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4BB5DE
#4BB5DE
oklch(72.8% 0.113 227.1)
- #E19068
#E19068
oklch(72.8% 0.113 46.7)
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 #4BB5DE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.050
- Turquoise Blue #06B1C4 ΔE 0.050
- Vivid Sky Blue #4CC9F0 ΔE 0.056
- Bright Sky Blue #02CCFE ΔE 0.067
- Greyblue #77A1B5 ΔE 0.072
- Lightblue #7BC8F6 ΔE 0.075
- Carolina Blue #8AB8FE ΔE 0.078
- Bluegrey #85A3B2 ΔE 0.079
Use #4BB5DE 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.