#42A5BE#42A5BE

#42A5BE is a light, moderate cyan. Relative luminance 0.318; OKLCH L 67.4% C 0.098 H 217.5°. Best body text is #000000 at 7.36:1 contrast (WCAG AA passes).

Color values

HEX	#42A5BE
RGB	rgb(66, 165, 190)
HSL	hsl(192, 49%, 50%)
HSV	hsv(192, 65%, 75%)
CMYK	cmyk(65.3%, 13.2%, 0%, 25.5%)
CIE-LAB	lab(63.16, -20.90, -21.35)
CIE-LCH	lch(63.16, 29.88, 225.62°)
OKLab	oklab(67.41% -0.0775 -0.0594)
OKLCH	oklch(67.41% 0.098 217.5)
XYZ	xyz(24.9924, 31.7835, 53.5229)
Luminance	0.3179 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42A5BE #BE5B42

analogous

#42BE99 #42A5BE #4267BE

triadic

#42A5BE #BE42A5 #A5BE42

tetradic

#42A5BE #9942BE #BE5B42 #67BE42

square

#42A5BE #9942BE #BE5B42 #67BE42

split-complementary

#42A5BE #BE4267 #BE9942

monochromatic

#225663 #327E91 #42A5BE #70BBCE #9DD0DD

Accessibility & contrast

On white

2.85

#42A5BE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.36

#42A5BE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42A5BE

7.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42A5BE	#FFFFFF	#000000	##000000
##42A5BE	1.00	2.85	7.36	7.36
#FFFFFF	2.85	1.00	21.00	21.00
#000000	7.36	21.00	1.00	1.00
##000000	7.36	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#95A0BF

Deuteranopia (green-blind)

#8393BE

Tritanopia (blue-blind)

#00AEAD

Achromatopsia (no color)

#999999

Design tokens & code

CSS

--color: #42a5be;
/* rgb */ color: rgb(66, 165, 190);
/* oklch */ color: oklch(67.4% 0.098 217.5);

Tailwind

colors: {
  custom: {
    50: '#84c0d1',
    500: '#42a5be',
    950: '#000000',
  },
}

SCSS

$custom: #42a5be;
$custom-light: #84c0d1;
$custom-dark: #000000;

JSON

{
  "hex": "#42a5be",
  "rgb": {
    "r": 66,
    "g": 165,
    "b": 190
  },
  "hsl": {
    "h": 192.097,
    "s": 48.819,
    "l": 50.196
  },
  "oklch": {
    "l": 0.67412,
    "c": 0.09765,
    "h": 217.5
  },
  "luminance": 0.31786
}

Semantic roles & 50–950 ramp

primary

#42A5BE

secondary

#CA9D92

accent

#6B4FD8

background

#F8FBFC

surface

#F0F7F9

border

#CBD0D2

text

#0C1214

muted

#7D8182

Preview Lab

Preview with #42A5BE

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

Preview Lab → · Contrast checker → · Palette generator →