#427BB4#427BB4

#427BB4 is a mid, moderate cyan. Relative luminance 0.186; OKLCH L 57.0% C 0.107 H 250.2°. Best body text is #000000 at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#427BB4
RGB	rgb(66, 123, 180)
HSL	hsl(210, 46%, 48%)
HSV	hsv(210, 63%, 71%)
CMYK	cmyk(63.3%, 31.7%, 0%, 29.4%)
CIE-LAB	lab(50.24, -0.70, -35.69)
CIE-LCH	lch(50.24, 35.70, 268.87°)
OKLab	oklab(57% -0.0362 -0.1008)
OKLCH	oklch(57% 0.107 250.2)
XYZ	xyz(17.5649, 18.6178, 45.8391)
Luminance	0.1862 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427BB4 #B47B42

analogous

#42B4B4 #427BB4 #4242B4

triadic

#427BB4 #B4427B #7BB442

tetradic

#427BB4 #B442B4 #B47B42 #42B442

square

#427BB4 #B442B4 #B47B42 #42B442

split-complementary

#427BB4 #B44242 #B4B442

monochromatic

#213E5A #325C87 #427BB4 #6B9AC9 #97B8D9

Accessibility & contrast

On white

4.45

#427BB4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.72

#427BB4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427BB4

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427BB4	#FFFFFF	#000000	##000000
##427BB4	1.00	4.45	4.72	4.72
#FFFFFF	4.45	1.00	21.00	21.00
#000000	4.72	21.00	1.00	1.00
##000000	4.72	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#627EB6

Deuteranopia (green-blind)

#5373B3

Tritanopia (blue-blind)

#00888F

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #427bb4;
/* rgb */ color: rgb(66, 123, 180);
/* oklch */ color: oklch(57.0% 0.107 250.2);

Tailwind

colors: {
  custom: {
    50: '#81a0ca',
    500: '#427bb4',
    950: '#000000',
  },
}

SCSS

$custom: #427bb4;
$custom-light: #81a0ca;
$custom-dark: #000000;

JSON

{
  "hex": "#427bb4",
  "rgb": {
    "r": 66,
    "g": 123,
    "b": 180
  },
  "hsl": {
    "h": 210,
    "s": 46.341,
    "l": 48.235
  },
  "oklch": {
    "l": 0.57001,
    "c": 0.10716,
    "h": 250.2
  },
  "luminance": 0.18619
}

Semantic roles & 50–950 ramp

primary

#427BB4

secondary

#C5A98D

accent

#9452D6

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #427BB4

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

Preview Lab → · Contrast checker → · Palette generator →