#4BB9DC
Closest named color: Vivid Sky Blue (#4CC9F0). oklch(73.7% 0.111 222.5), rgb(75, 185, 220).
Aa
Black text reads best on this color (9.27:1).
About this color
#4BB9DC is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 74%, its chroma 0.111 and its hue 222°. Its hue sits on the cool side of the wheel. The nearest named color is Vivid Sky Blue (#4CC9F0), ΔE 0.047 away. Black text reads best on it, at 9.27:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (74%) |
| Chroma | moderately saturated (0.111) |
| Temperature | cool |
| Nearest name | Vivid Sky Blue (#4CC9F0) |
| Black text | 9.27:1 |
| White text | 2.26:1 |
Values
| HEX | #4BB9DC |
| RGB | rgb(75, 185, 220) |
| HSL | hsl(194, 67%, 58%) |
| OKLCH | oklch(73.7% 0.111 222.5) |
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 #4BB9DC | 2.26:1 | Fails | Lc -49.2 | Large or bold text, headings |
| Black text on #4BB9DC | 9.27:1 | AAA | Lc 59.6 | Large or bold text, headings |
| #4BB9DC text on white | 2.26:1 | Fails | Lc 44.4 | Non-text elements, placeholder text |
| #4BB9DC text on black | 9.27:1 | AAA | Lc -57.8 | 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
#EFF7FA
oklch(97.1% 0.009 222.1)
-
Step 100
100
#DCEDF4
oklch(93.6% 0.02 224.3)
-
Step 200
200
#BFDFEC
oklch(88.4% 0.038 224.3)
-
Step 300
300
#8FCBE1
oklch(80.9% 0.069 222.8)
-
Step 400
400 (this color)
#4BB9DC
oklch(73.7% 0.111 222.5)
-
Step 500
500
#0098BC
oklch(63% 0.117 222.5)
-
Step 600
600
#00809F
oklch(55.6% 0.103 222.6)
-
Step 700
700
#006B86
oklch(49% 0.091 223.1)
-
Step 800
800
#00586E
oklch(42.7% 0.079 222.3)
-
Step 900
900
#00495C
oklch(37.6% 0.07 222.6)
-
Step 950
950
#002C38
oklch(27.2% 0.05 221.4)
#4BB9DC 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) | #A5B5DE | 0.089 |
| Deuteranopia (no green cones) | #90A6DC | 0.078 |
| Tritanopia (no blue cones) | #00C4C4 | 0.059 |
| Achromatopsia (no color) | #ACACAC | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4BB9DC
#4BB9DC
oklch(73.7% 0.111 222.5)
- #E59271
#E59271
oklch(73.7% 0.111 42.4)
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 #4BB9DC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vivid Sky Blue #4CC9F0 ΔE 0.047
- Turquoise Blue #06B1C4 ΔE 0.050
- Deep Sky Blue #00BFFF ΔE 0.051
- Bright Sky Blue #02CCFE ΔE 0.061
- Dark Turquoise #00CED1 ΔE 0.068
- Lightblue #7BC8F6 ΔE 0.069
- Topaz #13BBAF ΔE 0.076
- Greyblue #77A1B5 ΔE 0.077
Use #4BB9DC 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.