#427CB4#427CB4

#427CB4 is a mid, moderate cyan. Relative luminance 0.189; OKLCH L 57.2% C 0.106 H 249.4°. Best body text is #000000 at 4.77:1 contrast (WCAG AA passes).

Color values

HEX	#427CB4
RGB	rgb(66, 124, 180)
HSL	hsl(209, 46%, 48%)
HSV	hsv(209, 63%, 71%)
CMYK	cmyk(63.3%, 31.1%, 0%, 29.4%)
CIE-LAB	lab(50.53, -1.30, -35.23)
CIE-LCH	lch(50.53, 35.26, 267.88°)
OKLab	oklab(57.23% -0.0373 -0.0995)
OKLCH	oklch(57.23% 0.106 249.4)
XYZ	xyz(17.6896, 18.8671, 45.8806)
Luminance	0.1887 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427CB4 #B47A42

analogous

#42B4B3 #427CB4 #4243B4

triadic

#427CB4 #B4427C #7CB442

tetradic

#427CB4 #B342B4 #B47A42 #43B442

square

#427CB4 #B342B4 #B47A42 #43B442

split-complementary

#427CB4 #B44243 #B4B342

monochromatic

#213E5A #325D87 #427CB4 #6B9AC9 #97B9D9

Accessibility & contrast

On white

4.40

#427CB4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.77

#427CB4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427CB4

4.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427CB4	#FFFFFF	#000000	##000000
##427CB4	1.00	4.40	4.77	4.77
#FFFFFF	4.40	1.00	21.00	21.00
#000000	4.77	21.00	1.00	1.00
##000000	4.77	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#647EB6

Deuteranopia (green-blind)

#5473B3

Tritanopia (blue-blind)

#008990

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #427cb4;
/* rgb */ color: rgb(66, 124, 180);
/* oklch */ color: oklch(57.2% 0.106 249.4);

Tailwind

colors: {
  custom: {
    50: '#81a1ca',
    500: '#427cb4',
    950: '#000000',
  },
}

SCSS

$custom: #427cb4;
$custom-light: #81a1ca;
$custom-dark: #000000;

JSON

{
  "hex": "#427cb4",
  "rgb": {
    "r": 66,
    "g": 124,
    "b": 180
  },
  "hsl": {
    "h": 209.474,
    "s": 46.341,
    "l": 48.235
  },
  "oklch": {
    "l": 0.57232,
    "c": 0.10625,
    "h": 249.4
  },
  "luminance": 0.18869
}

Semantic roles & 50–950 ramp

primary

#427CB4

secondary

#C5A88D

accent

#9352D6

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #427CB4

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

Preview Lab → · Contrast checker → · Palette generator →