#427CBB#427CBB

#427CBB is a mid, moderate cyan. Relative luminance 0.192; OKLCH L 57.6% C 0.115 H 252.1°. Best body text is #000000 at 4.83:1 contrast (WCAG AA passes).

Color values

HEX	#427CBB
RGB	rgb(66, 124, 187)
HSL	hsl(211, 48%, 50%)
HSV	hsv(211, 65%, 73%)
CMYK	cmyk(64.7%, 33.7%, 0%, 26.7%)
CIE-LAB	lab(50.87, 1.10, -38.72)
CIE-LCH	lch(50.87, 38.74, 271.63°)
OKLab	oklab(57.61% -0.0353 -0.1096)
OKLCH	oklch(57.61% 0.115 252.1)
XYZ	xyz(18.4208, 19.1596, 49.7315)
Luminance	0.1916 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427CBB #BB8142

analogous

#42B8BB #427CBB #4542BB

triadic

#427CBB #BB427C #7CBB42

tetradic

#427CBB #BB42B8 #BB8142 #42BB45

square

#427CBB #BB42B8 #BB8142 #42BB45

split-complementary

#427CBB #BB4542 #B8BB42

monochromatic

#224061 #325E8E #427CBB #6E9BCC #9CBADC

Accessibility & contrast

On white

4.35

#427CBB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.83

#427CBB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427CBB

4.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427CBB	#FFFFFF	#000000	##000000
##427CBB	1.00	4.35	4.83	4.83
#FFFFFF	4.35	1.00	21.00	21.00
#000000	4.83	21.00	1.00	1.00
##000000	4.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#617FBE

Deuteranopia (green-blind)

#5074BA

Tritanopia (blue-blind)

#008B93

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #427cbb;
/* rgb */ color: rgb(66, 124, 187);
/* oklch */ color: oklch(57.6% 0.115 252.1);

Tailwind

colors: {
  custom: {
    50: '#82a1d0',
    500: '#427cbb',
    950: '#000000',
  },
}

SCSS

$custom: #427cbb;
$custom-light: #82a1d0;
$custom-dark: #000000;

JSON

{
  "hex": "#427cbb",
  "rgb": {
    "r": 66,
    "g": 124,
    "b": 187
  },
  "hsl": {
    "h": 211.24,
    "s": 47.826,
    "l": 49.608
  },
  "oklch": {
    "l": 0.57613,
    "c": 0.1152,
    "h": 252.1
  },
  "luminance": 0.19161
}

Semantic roles & 50–950 ramp

primary

#427CBB

secondary

#C8AE91

accent

#9750D7

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #427CBB

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

Preview Lab → · Contrast checker → · Palette generator →