#427DB4#427DB4

#427DB4 is a mid, moderate cyan. Relative luminance 0.191; OKLCH L 57.5% C 0.105 H 248.6°. Best body text is #000000 at 4.82:1 contrast (WCAG AA passes).

Color values

HEX	#427DB4
RGB	rgb(66, 125, 180)
HSL	hsl(209, 46%, 48%)
HSV	hsv(209, 63%, 71%)
CMYK	cmyk(63.3%, 30.6%, 0%, 29.4%)
CIE-LAB	lab(50.83, -1.90, -34.77)
CIE-LCH	lch(50.83, 34.82, 266.88°)
OKLab	oklab(57.46% -0.0384 -0.0981)
OKLCH	oklch(57.46% 0.105 248.6)
XYZ	xyz(17.8156, 19.1190, 45.9226)
Luminance	0.1912 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427DB4 #B47942

analogous

#42B4B2 #427DB4 #4244B4

triadic

#427DB4 #B4427D #7DB442

tetradic

#427DB4 #B242B4 #B47942 #44B442

square

#427DB4 #B242B4 #B47942 #44B442

split-complementary

#427DB4 #B44244 #B4B242

monochromatic

#213F5A #325E87 #427DB4 #6B9BC9 #97B9D9

Accessibility & contrast

On white

4.35

#427DB4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.82

#427DB4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427DB4

4.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427DB4	#FFFFFF	#000000	##000000
##427DB4	1.00	4.35	4.82	4.82
#FFFFFF	4.35	1.00	21.00	21.00
#000000	4.82	21.00	1.00	1.00
##000000	4.82	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#657FB6

Deuteranopia (green-blind)

#5674B3

Tritanopia (blue-blind)

#008A90

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #427db4;
/* rgb */ color: rgb(66, 125, 180);
/* oklch */ color: oklch(57.5% 0.105 248.6);

Tailwind

colors: {
  custom: {
    50: '#81a2ca',
    500: '#427db4',
    950: '#000000',
  },
}

SCSS

$custom: #427db4;
$custom-light: #81a2ca;
$custom-dark: #000000;

JSON

{
  "hex": "#427db4",
  "rgb": {
    "r": 66,
    "g": 125,
    "b": 180
  },
  "hsl": {
    "h": 208.947,
    "s": 46.341,
    "l": 48.235
  },
  "oklch": {
    "l": 0.57464,
    "c": 0.10538,
    "h": 248.6
  },
  "luminance": 0.19121
}

Semantic roles & 50–950 ramp

primary

#427DB4

secondary

#C5A88D

accent

#9252D6

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0F13

muted

#7C7E82

Preview Lab

Preview with #427DB4

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

Preview Lab → · Contrast checker → · Palette generator →