#427CB1#427CB1

#427CB1 is a mid, moderate cyan. Relative luminance 0.187; OKLCH L 57.1% C 0.102 H 248.1°. Best body text is #000000 at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#427CB1
RGB	rgb(66, 124, 177)
HSL	hsl(209, 46%, 48%)
HSV	hsv(209, 63%, 69%)
CMYK	cmyk(62.7%, 29.9%, 0%, 30.6%)
CIE-LAB	lab(50.39, -2.32, -33.72)
CIE-LCH	lch(50.39, 33.80, 266.06°)
OKLab	oklab(57.07% -0.0382 -0.0951)
OKLCH	oklch(57.07% 0.103 248.1)
XYZ	xyz(17.3873, 18.7462, 44.2885)
Luminance	0.1875 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427CB1 #B17742

analogous

#42B1AF #427CB1 #4244B1

triadic

#427CB1 #B1427C #7CB142

tetradic

#427CB1 #AF42B1 #B17742 #44B142

square

#427CB1 #AF42B1 #B17742 #44B142

split-complementary

#427CB1 #B14244 #B1AF42

monochromatic

#213E58 #315D84 #427CB1 #699AC7 #96B8D8

Accessibility & contrast

On white

4.42

#427CB1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.75

#427CB1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427CB1

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427CB1	#FFFFFF	#000000	##000000
##427CB1	1.00	4.42	4.75	4.75
#FFFFFF	4.42	1.00	21.00	21.00
#000000	4.75	21.00	1.00	1.00
##000000	4.75	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#657EB3

Deuteranopia (green-blind)

#5673B0

Tritanopia (blue-blind)

#00898F

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #427cb1;
/* rgb */ color: rgb(66, 124, 177);
/* oklch */ color: oklch(57.1% 0.102 248.1);

Tailwind

colors: {
  custom: {
    50: '#81a1c8',
    500: '#427cb1',
    950: '#000000',
  },
}

SCSS

$custom: #427cb1;
$custom-light: #81a1c8;
$custom-dark: #000000;

JSON

{
  "hex": "#427cb1",
  "rgb": {
    "r": 66,
    "g": 124,
    "b": 177
  },
  "hsl": {
    "h": 208.649,
    "s": 45.679,
    "l": 47.647
  },
  "oklch": {
    "l": 0.57073,
    "c": 0.1025,
    "h": 248.1
  },
  "luminance": 0.18748
}

Semantic roles & 50–950 ramp

primary

#427CB1

secondary

#C3A68B

accent

#9152D5

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0F13

muted

#7C7E82

Preview Lab

Preview with #427CB1

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

Preview Lab → · Contrast checker → · Palette generator →