#427CB7#427CB7

#427CB7 is a mid, moderate cyan. Relative luminance 0.190; OKLCH L 57.4% C 0.110 H 250.7°. Best body text is #000000 at 4.80:1 contrast (WCAG AA passes).

Color values

HEX	#427CB7
RGB	rgb(66, 124, 183)
HSL	hsl(210, 47%, 49%)
HSV	hsv(210, 64%, 72%)
CMYK	cmyk(63.9%, 32.2%, 0%, 28.2%)
CIE-LAB	lab(50.68, -0.27, -36.73)
CIE-LCH	lch(50.68, 36.73, 269.57°)
OKLab	oklab(57.39% -0.0365 -0.1038)
OKLCH	oklch(57.39% 0.11 250.7)
XYZ	xyz(17.9985, 18.9907, 47.5076)
Luminance	0.1899 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427CB7 #B77D42

analogous

#42B7B7 #427CB7 #4242B7

triadic

#427CB7 #B7427C #7CB742

tetradic

#427CB7 #B742B7 #B77D42 #42B742

square

#427CB7 #B742B7 #B77D42 #42B742

split-complementary

#427CB7 #B74242 #B7B742

monochromatic

#223F5D #325E8A #427CB7 #6C9BCA #99B9DA

Accessibility & contrast

On white

4.38

#427CB7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.80

#427CB7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427CB7

4.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427CB7	#FFFFFF	#000000	##000000
##427CB7	1.00	4.38	4.80	4.80
#FFFFFF	4.38	1.00	21.00	21.00
#000000	4.80	21.00	1.00	1.00
##000000	4.80	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#627FBA

Deuteranopia (green-blind)

#5374B6

Tritanopia (blue-blind)

#008A91

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #427cb7;
/* rgb */ color: rgb(66, 124, 183);
/* oklch */ color: oklch(57.4% 0.110 250.7);

Tailwind

colors: {
  custom: {
    50: '#82a1cd',
    500: '#427cb7',
    950: '#000000',
  },
}

SCSS

$custom: #427cb7;
$custom-light: #82a1cd;
$custom-dark: #000000;

JSON

{
  "hex": "#427cb7",
  "rgb": {
    "r": 66,
    "g": 124,
    "b": 183
  },
  "hsl": {
    "h": 210.256,
    "s": 46.988,
    "l": 48.824
  },
  "oklch": {
    "l": 0.57393,
    "c": 0.11006,
    "h": 250.7
  },
  "luminance": 0.18992
}

Semantic roles & 50–950 ramp

primary

#427CB7

secondary

#C6AB8F

accent

#9451D7

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #427CB7

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

Preview Lab → · Contrast checker → · Palette generator →