#427BB7#427BB7

#427BB7 is a mid, moderate cyan. Relative luminance 0.187; OKLCH L 57.2% C 0.111 H 251.4°. Best body text is #000000 at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#427BB7
RGB	rgb(66, 123, 183)
HSL	hsl(211, 47%, 49%)
HSV	hsv(211, 64%, 72%)
CMYK	cmyk(63.9%, 32.8%, 0%, 28.2%)
CIE-LAB	lab(50.38, 0.32, -37.19)
CIE-LCH	lch(50.38, 37.20, 270.50°)
OKLab	oklab(57.16% -0.0354 -0.1052)
OKLCH	oklch(57.16% 0.111 251.4)
XYZ	xyz(17.8738, 18.7413, 47.4661)
Luminance	0.1874 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427BB7 #B77E42

analogous

#42B6B7 #427BB7 #4442B7

triadic

#427BB7 #B7427B #7BB742

tetradic

#427BB7 #B742B6 #B77E42 #42B744

square

#427BB7 #B742B6 #B77E42 #42B744

split-complementary

#427BB7 #B74442 #B6B742

monochromatic

#223F5D #325D8A #427BB7 #6C9ACA #99B9DA

Accessibility & contrast

On white

4.42

#427BB7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.75

#427BB7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427BB7

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427BB7	#FFFFFF	#000000	##000000
##427BB7	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)

#617EBA

Deuteranopia (green-blind)

#5173B6

Tritanopia (blue-blind)

#008991

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #427bb7;
/* rgb */ color: rgb(66, 123, 183);
/* oklch */ color: oklch(57.2% 0.111 251.4);

Tailwind

colors: {
  custom: {
    50: '#81a0cd',
    500: '#427bb7',
    950: '#000000',
  },
}

SCSS

$custom: #427bb7;
$custom-light: #81a0cd;
$custom-dark: #000000;

JSON

{
  "hex": "#427bb7",
  "rgb": {
    "r": 66,
    "g": 123,
    "b": 183
  },
  "hsl": {
    "h": 210.769,
    "s": 46.988,
    "l": 48.824
  },
  "oklch": {
    "l": 0.57163,
    "c": 0.11099,
    "h": 251.4
  },
  "luminance": 0.18743
}

Semantic roles & 50–950 ramp

primary

#427BB7

secondary

#C6AB8F

accent

#9651D7

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #427BB7

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

Preview Lab → · Contrast checker → · Palette generator →