#427BB2#427BB2

#427BB2 is a mid, moderate cyan. Relative luminance 0.185; OKLCH L 56.9% C 0.105 H 249.4°. Best body text is #000000 at 4.71:1 contrast (WCAG AA passes).

Color values

HEX	#427BB2
RGB	rgb(66, 123, 178)
HSL	hsl(209, 46%, 48%)
HSV	hsv(209, 63%, 70%)
CMYK	cmyk(62.9%, 30.9%, 0%, 30.2%)
CIE-LAB	lab(50.14, -1.39, -34.69)
CIE-LCH	lch(50.14, 34.72, 267.71°)
OKLab	oklab(56.89% -0.0368 -0.0979)
OKLCH	oklch(56.89% 0.105 249.4)
XYZ	xyz(17.3627, 18.5369, 44.7738)
Luminance	0.1854 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427BB2 #B27942

analogous

#42B2B1 #427BB2 #4243B2

triadic

#427BB2 #B2427B #7BB242

tetradic

#427BB2 #B142B2 #B27942 #43B242

square

#427BB2 #B142B2 #B27942 #43B242

split-complementary

#427BB2 #B24243 #B2B142

monochromatic

#213D59 #315C85 #427BB2 #6A99C8 #96B8D8

Accessibility & contrast

On white

4.46

#427BB2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.71

#427BB2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427BB2

4.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427BB2	#FFFFFF	#000000	##000000
##427BB2	1.00	4.46	4.71	4.71
#FFFFFF	4.46	1.00	21.00	21.00
#000000	4.71	21.00	1.00	1.00
##000000	4.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#637DB4

Deuteranopia (green-blind)

#5472B1

Tritanopia (blue-blind)

#00888E

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #427bb2;
/* rgb */ color: rgb(66, 123, 178);
/* oklch */ color: oklch(56.9% 0.105 249.4);

Tailwind

colors: {
  custom: {
    50: '#81a0c9',
    500: '#427bb2',
    950: '#000000',
  },
}

SCSS

$custom: #427bb2;
$custom-light: #81a0c9;
$custom-dark: #000000;

JSON

{
  "hex": "#427bb2",
  "rgb": {
    "r": 66,
    "g": 123,
    "b": 178
  },
  "hsl": {
    "h": 209.464,
    "s": 45.902,
    "l": 47.843
  },
  "oklch": {
    "l": 0.56894,
    "c": 0.10462,
    "h": 249.4
  },
  "luminance": 0.18539
}

Semantic roles & 50–950 ramp

primary

#427BB2

secondary

#C4A78C

accent

#9352D6

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #427BB2

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

Preview Lab → · Contrast checker → · Palette generator →