#42A7DF#42A7DF

#42A7DF is a light, vivid cyan. Relative luminance 0.341; OKLCH L 69.4% C 0.124 H 236.9°. Best body text is #000000 at 7.82:1 contrast (WCAG AA passes).

Color values

HEX	#42A7DF
RGB	rgb(66, 167, 223)
HSL	hsl(201, 71%, 57%)
HSV	hsv(201, 70%, 87%)
CMYK	cmyk(70.4%, 25.1%, 0%, 12.5%)
CIE-LAB	lab(65.06, -11.32, -36.75)
CIE-LCH	lch(65.06, 38.45, 252.88°)
OKLab	oklab(69.36% -0.0675 -0.1035)
OKLCH	oklch(69.36% 0.124 236.9)
XYZ	xyz(29.3795, 34.1201, 74.8352)
Luminance	0.3412 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42A7DF #DF7A42

analogous

#42DFC8 #42A7DF #4259DF

triadic

#42A7DF #DF42A7 #A7DF42

tetradic

#42A7DF #C842DF #DF7A42 #59DF42

square

#42A7DF #C842DF #DF7A42 #59DF42

split-complementary

#42A7DF #DF4259 #DFC842

monochromatic

#18648E #2189C3 #42A7DF #76BFE8 #ABD8F1

Accessibility & contrast

On white

2.68

#42A7DF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.82

#42A7DF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42A7DF

7.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42A7DF	#FFFFFF	#000000	##000000
##42A7DF	1.00	2.68	7.82	7.82
#FFFFFF	2.68	1.00	21.00	21.00
#000000	7.82	21.00	1.00	1.00
##000000	7.82	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8CA6E2

Deuteranopia (green-blind)

#7797DE

Tritanopia (blue-blind)

#00B5BA

Achromatopsia (no color)

#9E9E9E

Design tokens & code

CSS

--color: #42a7df;
/* rgb */ color: rgb(66, 167, 223);
/* oklch */ color: oklch(69.4% 0.124 236.9);

Tailwind

colors: {
  custom: {
    50: '#89c1e9',
    500: '#42a7df',
    950: '#000000',
  },
}

SCSS

$custom: #42a7df;
$custom-light: #89c1e9;
$custom-dark: #000000;

JSON

{
  "hex": "#42a7df",
  "rgb": {
    "r": 66,
    "g": 167,
    "b": 223
  },
  "hsl": {
    "h": 201.401,
    "s": 71.041,
    "l": 56.667
  },
  "oklch": {
    "l": 0.69356,
    "c": 0.12356,
    "h": 236.9
  },
  "luminance": 0.34123
}

Semantic roles & 50–950 ramp

primary

#42A7DF

secondary

#DFB59E

accent

#7A3AEE

background

#F9FBFE

surface

#F1F7FD

border

#CBD0D5

text

#0D1216

muted

#7E8184

Preview Lab

Preview with #42A7DF

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →