#4FBDDF
Closest named color: Vivid Sky Blue (#4CC9F0). oklch(74.9% 0.11 221.7), rgb(79, 189, 223).
Aa
Black text reads best on this color (9.67:1).
About this color
#4FBDDF is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 75%, its chroma 0.110 and its hue 222°. Its hue sits on the cool side of the wheel. The nearest named color is Vivid Sky Blue (#4CC9F0), ΔE 0.036 away. Black text reads best on it, at 9.67:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (75%) |
| Chroma | moderately saturated (0.110) |
| Temperature | cool |
| Nearest name | Vivid Sky Blue (#4CC9F0) |
| Black text | 9.67:1 |
| White text | 2.17:1 |
Values
| HEX | #4FBDDF |
| RGB | rgb(79, 189, 223) |
| HSL | hsl(194, 69%, 59%) |
| OKLCH | oklch(74.9% 0.11 221.7) |
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 #4FBDDF | 2.17:1 | Fails | Lc -47.1 | Large or bold text, headings |
| Black text on #4FBDDF | 9.67:1 | AAA | Lc 61.6 | Content text, not long reading |
| #4FBDDF text on white | 2.17:1 | Fails | Lc 42.4 | Non-text elements, placeholder text |
| #4FBDDF text on black | 9.67:1 | AAA | Lc -59.8 | 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
#DCEDF3
oklch(93.5% 0.02 220.9)
-
Step 200
200
#BFDFEB
oklch(88.4% 0.038 222.5)
-
Step 300
300
#8FCBE0
oklch(80.8% 0.068 221.7)
-
Step 400
400 (this color)
#4FBDDF
oklch(74.9% 0.11 221.7)
-
Step 500
500
#0098BB
oklch(63% 0.116 221.8)
-
Step 600
600
#00809E
oklch(55.6% 0.103 221.9)
-
Step 700
700
#006C85
oklch(49.2% 0.09 221.2)
-
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)
#4FBDDF 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) | #A9B9E1 | 0.090 |
| Deuteranopia (no green cones) | #95A9DF | 0.081 |
| Tritanopia (no blue cones) | #00C8C8 | 0.059 |
| Achromatopsia (no color) | #B0B0B0 | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4FBDDF
#4FBDDF
oklch(74.9% 0.11 221.7)
- #E99576
#E99576
oklch(74.8% 0.111 41)
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 #4FBDDF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vivid Sky Blue #4CC9F0 ΔE 0.036
- Deep Sky Blue #00BFFF ΔE 0.049
- Bright Sky Blue #02CCFE ΔE 0.052
- Lightblue #7BC8F6 ΔE 0.059
- Turquoise Blue #06B1C4 ΔE 0.059
- Dark Turquoise #00CED1 ΔE 0.061
- Medium Turquoise #48D1CC ΔE 0.070
- Light Cornflower Blue #98C1D9 ΔE 0.070
Use #4FBDDF 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.