#427CB5#427CB5

#427CB5 is a mid, moderate cyan. Relative luminance 0.189; OKLCH L 57.3% C 0.108 H 249.9°. Best body text is #000000 at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#427CB5
RGB	rgb(66, 124, 181)
HSL	hsl(210, 47%, 48%)
HSV	hsv(210, 64%, 71%)
CMYK	cmyk(63.5%, 31.5%, 0%, 29%)
CIE-LAB	lab(50.58, -0.96, -35.73)
CIE-LCH	lch(50.58, 35.75, 268.46°)
OKLab	oklab(57.29% -0.037 -0.1009)
OKLCH	oklch(57.29% 0.108 249.9)
XYZ	xyz(17.7918, 18.9080, 46.4191)
Luminance	0.1891 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427CB5 #B57B42

analogous

#42B5B4 #427CB5 #4242B5

triadic

#427CB5 #B5427C #7CB542

tetradic

#427CB5 #B442B5 #B57B42 #42B542

square

#427CB5 #B442B5 #B57B42 #42B542

split-complementary

#427CB5 #B54242 #B5B442

monochromatic

#213F5B #325D88 #427CB5 #6B9BC9 #98B9D9

Accessibility & contrast

On white

4.39

#427CB5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.78

#427CB5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427CB5

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427CB5	#FFFFFF	#000000	##000000
##427CB5	1.00	4.39	4.78	4.78
#FFFFFF	4.39	1.00	21.00	21.00
#000000	4.78	21.00	1.00	1.00
##000000	4.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#637FB7

Deuteranopia (green-blind)

#5473B4

Tritanopia (blue-blind)

#008990

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #427cb5;
/* rgb */ color: rgb(66, 124, 181);
/* oklch */ color: oklch(57.3% 0.108 249.9);

Tailwind

colors: {
  custom: {
    50: '#81a1cb',
    500: '#427cb5',
    950: '#000000',
  },
}

SCSS

$custom: #427cb5;
$custom-light: #81a1cb;
$custom-dark: #000000;

JSON

{
  "hex": "#427cb5",
  "rgb": {
    "r": 66,
    "g": 124,
    "b": 181
  },
  "hsl": {
    "h": 209.739,
    "s": 46.559,
    "l": 48.431
  },
  "oklch": {
    "l": 0.57286,
    "c": 0.10752,
    "h": 249.9
  },
  "luminance": 0.1891
}

Semantic roles & 50–950 ramp

primary

#427CB5

secondary

#C5A98E

accent

#9352D6

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #427CB5

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

Preview Lab → · Contrast checker → · Palette generator →