#427CB8#427CB8

#427CB8 is a mid, moderate cyan. Relative luminance 0.190; OKLCH L 57.4% C 0.111 H 251.0°. Best body text is #000000 at 4.81:1 contrast (WCAG AA passes).

Color values

HEX	#427CB8
RGB	rgb(66, 124, 184)
HSL	hsl(211, 47%, 49%)
HSV	hsv(211, 64%, 72%)
CMYK	cmyk(64.1%, 32.6%, 0%, 27.8%)
CIE-LAB	lab(50.73, 0.07, -37.23)
CIE-LCH	lch(50.73, 37.23, 270.11°)
OKLab	oklab(57.45% -0.0362 -0.1053)
OKLCH	oklch(57.45% 0.111 251)
XYZ	xyz(18.1030, 19.0325, 48.0577)
Luminance	0.1903 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427CB8 #B87E42

analogous

#42B7B8 #427CB8 #4342B8

triadic

#427CB8 #B8427C #7CB842

tetradic

#427CB8 #B842B7 #B87E42 #42B843

square

#427CB8 #B842B7 #B87E42 #42B843

split-complementary

#427CB8 #B84342 #B7B842

monochromatic

#223F5E #325E8B #427CB8 #6D9BCB #9ABADB

Accessibility & contrast

On white

4.37

#427CB8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.81

#427CB8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427CB8

4.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427CB8	#FFFFFF	#000000	##000000
##427CB8	1.00	4.37	4.81	4.81
#FFFFFF	4.37	1.00	21.00	21.00
#000000	4.81	21.00	1.00	1.00
##000000	4.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#627FBB

Deuteranopia (green-blind)

#5274B7

Tritanopia (blue-blind)

#008A91

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #427cb8;
/* rgb */ color: rgb(66, 124, 184);
/* oklch */ color: oklch(57.4% 0.111 251.0);

Tailwind

colors: {
  custom: {
    50: '#82a1cd',
    500: '#427cb8',
    950: '#000000',
  },
}

SCSS

$custom: #427cb8;
$custom-light: #82a1cd;
$custom-dark: #000000;

JSON

{
  "hex": "#427cb8",
  "rgb": {
    "r": 66,
    "g": 124,
    "b": 184
  },
  "hsl": {
    "h": 210.508,
    "s": 47.2,
    "l": 49.02
  },
  "oklch": {
    "l": 0.57448,
    "c": 0.11134,
    "h": 251
  },
  "luminance": 0.19034
}

Semantic roles & 50–950 ramp

primary

#427CB8

secondary

#C7AB8F

accent

#9551D7

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #427CB8

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

Preview Lab → · Contrast checker → · Palette generator →