#4BB4DF
Closest named color: Deep Sky Blue (#00BFFF). oklch(72.6% 0.114 228.5), rgb(75, 180, 223).
Aa
Black text reads best on this color (8.89:1).
About this color
#4BB4DF is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 73%, its chroma 0.114 and its hue 229°. 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 8.89:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.114) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 8.89:1 |
| White text | 2.36:1 |
Values
| HEX | #4BB4DF |
| RGB | rgb(75, 180, 223) |
| HSL | hsl(197, 70%, 58%) |
| OKLCH | oklch(72.6% 0.114 228.5) |
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 #4BB4DF | 2.36:1 | Fails | Lc -51.2 | Large or bold text, headings |
| Black text on #4BB4DF | 8.89:1 | AAA | Lc 57.7 | Large or bold text, headings |
| #4BB4DF text on white | 2.36:1 | Fails | Lc 46.3 | Large or bold text, headings |
| #4BB4DF text on black | 8.89:1 | AAA | Lc -55.8 | 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
#EFF7FB
oklch(97.1% 0.01 228.9)
-
Step 100
100
#DDEDF5
oklch(93.7% 0.02 229)
-
Step 200
200
#BFDFEE
oklch(88.5% 0.04 227.8)
-
Step 300
300
#90CAE5
oklch(80.9% 0.071 228.6)
-
Step 400
400 (this color)
#4BB4DF
oklch(72.6% 0.114 228.5)
-
Step 500
500
#0097C4
oklch(63.2% 0.123 228.1)
-
Step 600
600
#007FA6
oklch(55.7% 0.109 228.5)
-
Step 700
700
#006A8C
oklch(49% 0.097 229.1)
-
Step 800
800
#005773
oklch(42.7% 0.084 228.5)
-
Step 900
900
#004860
oklch(37.5% 0.074 228.7)
-
Step 950
950
#002B3B
oklch(27% 0.053 228.8)
#4BB4DF 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) | #9EB1E1 | 0.082 |
| Deuteranopia (no green cones) | #89A2DE | 0.071 |
| Tritanopia (no blue cones) | #00C0C2 | 0.068 |
| Achromatopsia (no color) | #A9A9A9 | 0.114 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4BB4DF
#4BB4DF
oklch(72.6% 0.114 228.5)
- #E09065
#E09065
oklch(72.6% 0.113 48.6)
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 #4BB4DF, 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 0.051
- Vivid Sky Blue #4CC9F0 ΔE 0.058
- Bright Sky Blue #02CCFE ΔE 0.068
- Greyblue #77A1B5 ΔE 0.072
- Lightblue #7BC8F6 ΔE 0.076
- Carolina Blue #8AB8FE ΔE 0.078
- Bluegrey #85A3B2 ΔE 0.079
Use #4BB4DF 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.