#42B6DF#42B6DF
#42B6DF is a light, moderate cyan. Relative luminance 0.399; OKLCH L 72.8% C 0.117 H 225.6°. Best body text is #000000 at 8.99:1 contrast (WCAG AA passes).
Color values
| HEX | #42B6DF |
|---|---|
| RGB | rgb(66, 182, 223) |
| HSL | hsl(196, 71%, 57%) |
| HSV | hsv(196, 70%, 87%) |
| CMYK | cmyk(70.4%, 18.4%, 0%, 12.5%) |
| CIE-LAB | lab(69.43, -19.34, -29.97) |
| CIE-LCH | lch(69.43, 35.67, 237.18°) |
| OKLab | oklab(72.84% -0.0821 -0.0839) |
| OKLCH | oklch(72.84% 0.117 225.6) |
| XYZ | xyz(32.2886, 39.9382, 75.8049) |
| Luminance | 0.3994 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Deepskyblue
#00BFFF
ΔE00 5.32
Bright Sky Blue
#02CCFE
ΔE00 5.95
Lightblue (survey)
#7BC8F6
ΔE00 7.44
Sky Blue
#87CEEB
ΔE00 8.28
Baby Blue
#89CFF0
ΔE00 8.51
Turquoise Blue
#06B1C4
ΔE00 8.56
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#42B6DF #DF6B42
analogous
#42DFBA #42B6DF #4268DF
triadic
#42B6DF #DF42B6 #B6DF42
tetradic
#42B6DF #BA42DF #DF6B42 #68DF42
square
#42B6DF #BA42DF #DF6B42 #68DF42
split-complementary
#42B6DF #DF4268 #DFBA42
monochromatic
#18708E #2199C3 #42B6DF #76CAE8 #ABDEF1
Accessibility & contrast
On white
2.34
#42B6DF on #FFFFFF
AA ✗AA large ✗AAA ✗
On black
8.99
#42B6DF on #000000
AA ✓AA large ✓AAA ✓
Best text color
#000000 on #42B6DF
8.99:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##42B6DF | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##42B6DF | 1.00 | 2.34 | 8.99 | 8.99 |
| #FFFFFF | 2.34 | 1.00 | 21.00 | 21.00 |
| #000000 | 8.99 | 21.00 | 1.00 | 1.00 |
| ##000000 | 8.99 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#A0B2E1
Deuteranopia (green-blind)
#8AA3DF
Tritanopia (blue-blind)
#00C2C3
Achromatopsia (no color)
#AAAAAA
Design tokens & code
CSS
--color: #42b6df; /* rgb */ color: rgb(66, 182, 223); /* oklch */ color: oklch(72.8% 0.117 225.6);
Tailwind
colors: {
custom: {
50: '#8acce9',
500: '#42b6df',
950: '#000000',
},
}SCSS
$custom: #42b6df; $custom-light: #8acce9; $custom-dark: #000000;
JSON
{
"hex": "#42b6df",
"rgb": {
"r": 66,
"g": 182,
"b": 223
},
"hsl": {
"h": 195.669,
"s": 71.041,
"l": 56.667
},
"oklch": {
"l": 0.72839,
"c": 0.1174,
"h": 225.6
},
"luminance": 0.39942
}Semantic roles & 50–950 ramp
primary
#42B6DF
secondary
#DFAF9E
accent
#693AEE
background
#F9FCFE
surface
#F1F8FC
border
#CBD1D5
text
#0D1316
muted
#7E8284