#427FFB#427FFB

#427FFB is a light, vivid blue. Relative luminance 0.233; OKLCH L 62.3% C 0.196 H 262.5°. Best body text is #000000 at 5.66:1 contrast (WCAG AA passes).

Color values

HEX	#427FFB
RGB	rgb(66, 127, 251)
HSL	hsl(220, 96%, 62%)
HSV	hsv(220, 74%, 98%)
CMYK	cmyk(73.7%, 49.4%, 0%, 1.6%)
CIE-LAB	lab(55.38, 22.00, -67.58)
CIE-LCH	lch(55.38, 71.07, 288.03°)
OKLab	oklab(62.28% -0.0256 -0.1943)
OKLCH	oklch(62.28% 0.196 262.5)
XYZ	xyz(27.2425, 23.2990, 94.3095)
Luminance	0.2330 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427FFB #FBBE42

analogous

#42DCFB #427FFB #6142FB

triadic

#427FFB #FB427F #7FFB42

tetradic

#427FFB #FB42DC #FBBE42 #42FB61

square

#427FFB #FB42DC #FBBE42 #42FB61

split-complementary

#427FFB #FB6142 #DCFB42

monochromatic

#0442BF #0656FA #427FFB #7EA8FC #BAD0FE

Accessibility & contrast

On white

3.71

#427FFB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.66

#427FFB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427FFB

5.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427FFB	#FFFFFF	#000000	##000000
##427FFB	1.00	3.71	5.66	5.66
#FFFFFF	3.71	1.00	21.00	21.00
#000000	5.66	21.00	1.00	1.00
##000000	5.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#348EFF

Deuteranopia (green-blind)

#007DF9

Tritanopia (blue-blind)

#009DB1

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #427ffb;
/* rgb */ color: rgb(66, 127, 251);
/* oklch */ color: oklch(62.3% 0.196 262.5);

Tailwind

colors: {
  custom: {
    50: '#8ea3fd',
    500: '#427ffb',
    950: '#000000',
  },
}

SCSS

$custom: #427ffb;
$custom-light: #8ea3fd;
$custom-dark: #000000;

JSON

{
  "hex": "#427ffb",
  "rgb": {
    "r": 66,
    "g": 127,
    "b": 251
  },
  "hsl": {
    "h": 220.216,
    "s": 95.855,
    "l": 62.157
  },
  "oklch": {
    "l": 0.62282,
    "c": 0.19598,
    "h": 262.5
  },
  "luminance": 0.23302
}

Semantic roles & 50–950 ramp

primary

#427FFB

secondary

#EED8AA

accent

#9A00E6

background

#F9F9FF

surface

#F2F2FF

border

#CCCCD7

text

#0E0F18

muted

#7E7E86

Preview Lab

Preview with #427FFB

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

Preview Lab → · Contrast checker → · Palette generator →