#4BBDE9
Closest named color: Vivid Sky Blue (#4CC9F0). oklch(75.2% 0.119 227.3), rgb(75, 189, 233).
Aa
Black text reads best on this color (9.75:1).
About this color
#4BBDE9 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 75%, its chroma 0.119 and its hue 227°. Its hue sits on the cool side of the wheel. The nearest named color is Vivid Sky Blue (#4CC9F0), ΔE 0.033 away. Black text reads best on it, at 9.75:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (75%) |
| Chroma | moderately saturated (0.119) |
| Temperature | cool |
| Nearest name | Vivid Sky Blue (#4CC9F0) |
| Black text | 9.75:1 |
| White text | 2.15:1 |
Values
| HEX | #4BBDE9 |
| RGB | rgb(75, 189, 233) |
| HSL | hsl(197, 78%, 60%) |
| OKLCH | oklch(75.2% 0.119 227.3) |
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 #4BBDE9 | 2.15:1 | Fails | Lc -46.6 | Large or bold text, headings |
| Black text on #4BBDE9 | 9.75:1 | AAA | Lc 62.0 | Content text, not long reading |
| #4BBDE9 text on white | 2.15:1 | Fails | Lc 42.0 | Non-text elements, placeholder text |
| #4BBDE9 text on black | 9.75:1 | AAA | Lc -60.3 | 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
#EFF7FB
oklch(97.1% 0.01 228.9)
-
Step 100
100
#DCEDF5
oklch(93.6% 0.021 227.5)
-
Step 200
200
#BEDFEF
oklch(88.5% 0.041 228.7)
-
Step 300
300
#8CCBE6
oklch(80.9% 0.075 226.7)
-
Step 400
400 (this color)
#4BBDE9
oklch(75.2% 0.119 227.3)
-
Step 500
500
#0097C3
oklch(63.1% 0.123 227.5)
-
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
#004960
oklch(37.8% 0.073 227.3)
-
Step 950
950
#002B3A
oklch(27% 0.052 227.2)
#4BBDE9 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) | #A6BAEB | 0.088 |
| Deuteranopia (no green cones) | #90AAE8 | 0.076 |
| Tritanopia (no blue cones) | #00CACB | 0.070 |
| Achromatopsia (no color) | #B1B1B1 | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4BBDE9
#4BBDE9
oklch(75.2% 0.119 227.3)
- #EC966A
#EC966A
oklch(75.1% 0.119 47.4)
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 #4BBDE9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vivid Sky Blue #4CC9F0 ΔE 0.033
- Deep Sky Blue #00BFFF ΔE 0.036
- Bright Sky Blue #02CCFE ΔE 0.044
- Lightblue #7BC8F6 ΔE 0.055
- Sky #82CAFC ΔE 0.066
- Carolina Blue #8AB8FE ΔE 0.068
- Turquoise Blue #06B1C4 ΔE 0.068
- Dark Turquoise #00CED1 ΔE 0.070
Use #4BBDE9 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.