#42A7CB#42A7CB

#42A7CB is a light, moderate cyan. Relative luminance 0.331; OKLCH L 68.4% C 0.106 H 225.3°. Best body text is #000000 at 7.62:1 contrast (WCAG AA passes).

Color values

HEX	#42A7CB
RGB	rgb(66, 167, 203)
HSL	hsl(196, 57%, 53%)
HSV	hsv(196, 67%, 80%)
CMYK	cmyk(67.5%, 17.7%, 0%, 20.4%)
CIE-LAB	lab(64.25, -17.85, -26.94)
CIE-LCH	lch(64.25, 32.31, 236.47°)
OKLab	oklab(68.44% -0.0745 -0.0753)
OKLCH	oklch(68.44% 0.106 225.3)
XYZ	xyz(26.8406, 33.1045, 61.4636)
Luminance	0.3311 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42A7CB #CB6642

analogous

#42CBAA #42A7CB #4263CB

triadic

#42A7CB #CB42A7 #A7CB42

tetradic

#42A7CB #AA42CB #CB6642 #63CB42

square

#42A7CB #AA42CB #CB6642 #63CB42

split-complementary

#42A7CB #CB4263 #CBAA42

monochromatic

#205D73 #2D84A3 #42A7CB #72BDD8 #A2D4E5

Accessibility & contrast

On white

2.76

#42A7CB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.62

#42A7CB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42A7CB

7.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42A7CB	#FFFFFF	#000000	##000000
##42A7CB	1.00	2.76	7.62	7.62
#FFFFFF	2.76	1.00	21.00	21.00
#000000	7.62	21.00	1.00	1.00
##000000	7.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#93A4CD

Deuteranopia (green-blind)

#8096CB

Tritanopia (blue-blind)

#00B2B3

Achromatopsia (no color)

#9C9C9C

Design tokens & code

CSS

--color: #42a7cb;
/* rgb */ color: rgb(66, 167, 203);
/* oklch */ color: oklch(68.4% 0.106 225.3);

Tailwind

colors: {
  custom: {
    50: '#86c1db',
    500: '#42a7cb',
    950: '#000000',
  },
}

SCSS

$custom: #42a7cb;
$custom-light: #86c1db;
$custom-dark: #000000;

JSON

{
  "hex": "#42a7cb",
  "rgb": {
    "r": 66,
    "g": 167,
    "b": 203
  },
  "hsl": {
    "h": 195.766,
    "s": 56.846,
    "l": 52.745
  },
  "oklch": {
    "l": 0.6844,
    "c": 0.10596,
    "h": 225.3
  },
  "luminance": 0.33107
}

Semantic roles & 50–950 ramp

primary

#42A7CB

secondary

#D2A697

accent

#7048E0

background

#F8FBFD

surface

#F0F7FA

border

#CBD0D3

text

#0C1215

muted

#7D8183

Preview Lab

Preview with #42A7CB

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

Preview Lab → · Contrast checker → · Palette generator →