#427DB8#427DB8

#427DB8 is a mid, moderate cyan. Relative luminance 0.193; OKLCH L 57.7% C 0.110 H 250.3°. Best body text is #000000 at 4.86:1 contrast (WCAG AA passes).

Color values

HEX	#427DB8
RGB	rgb(66, 125, 184)
HSL	hsl(210, 47%, 49%)
HSV	hsv(210, 64%, 72%)
CMYK	cmyk(64.1%, 32.1%, 0%, 27.8%)
CIE-LAB	lab(51.02, -0.53, -36.77)
CIE-LCH	lch(51.02, 36.78, 269.18°)
OKLab	oklab(57.68% -0.0372 -0.1039)
OKLCH	oklch(57.68% 0.11 250.3)
XYZ	xyz(18.2289, 19.2844, 48.0997)
Luminance	0.1929 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427DB8 #B87D42

analogous

#42B8B8 #427DB8 #4242B8

triadic

#427DB8 #B8427D #7DB842

tetradic

#427DB8 #B842B8 #B87D42 #42B842

square

#427DB8 #B842B8 #B87D42 #42B842

split-complementary

#427DB8 #B84242 #B8B842

monochromatic

#22405E #325E8B #427DB8 #6D9CCB #9ABADB

Accessibility & contrast

On white

4.32

#427DB8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.86

#427DB8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427DB8

4.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427DB8	#FFFFFF	#000000	##000000
##427DB8	1.00	4.32	4.86	4.86
#FFFFFF	4.32	1.00	21.00	21.00
#000000	4.86	21.00	1.00	1.00
##000000	4.86	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6380BB

Deuteranopia (green-blind)

#5374B7

Tritanopia (blue-blind)

#008B92

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #427db8;
/* rgb */ color: rgb(66, 125, 184);
/* oklch */ color: oklch(57.7% 0.110 250.3);

Tailwind

colors: {
  custom: {
    50: '#82a2cd',
    500: '#427db8',
    950: '#000000',
  },
}

SCSS

$custom: #427db8;
$custom-light: #82a2cd;
$custom-dark: #000000;

JSON

{
  "hex": "#427db8",
  "rgb": {
    "r": 66,
    "g": 125,
    "b": 184
  },
  "hsl": {
    "h": 210,
    "s": 47.2,
    "l": 49.02
  },
  "oklch": {
    "l": 0.57678,
    "c": 0.11041,
    "h": 250.3
  },
  "luminance": 0.19286
}

Semantic roles & 50–950 ramp

primary

#427DB8

secondary

#C7AB8F

accent

#9451D7

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0B0F13

muted

#7C7E82

Preview Lab

Preview with #427DB8

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

Preview Lab → · Contrast checker → · Palette generator →