#427CF3#427CF3

#427CF3 is a mid, vivid blue. Relative luminance 0.220; OKLCH L 61.1% C 0.189 H 262.6°. Best body text is #000000 at 5.41:1 contrast (WCAG AA passes).

Color values

HEX	#427CF3
RGB	rgb(66, 124, 243)
HSL	hsl(220, 88%, 61%)
HSV	hsv(220, 73%, 95%)
CMYK	cmyk(72.8%, 49%, 0%, 4.7%)
CIE-LAB	lab(54.07, 20.98, -65.26)
CIE-LCH	lch(54.07, 68.55, 287.82°)
OKLab	oklab(61.12% -0.0243 -0.1875)
OKLCH	oklch(61.12% 0.189 262.6)
XYZ	xyz(25.6263, 22.0418, 87.6806)
Luminance	0.2205 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427CF3 #F3B942

analogous

#42D4F3 #427CF3 #6042F3

triadic

#427CF3 #F3427C #7CF342

tetradic

#427CF3 #F342D4 #F3B942 #42F360

square

#427CF3 #F342D4 #F3B942 #42F360

split-complementary

#427CF3 #F36042 #D4F342

monochromatic

#0B41AF #0F56E9 #427CF3 #7CA4F7 #B5CCFA

Accessibility & contrast

On white

3.88

#427CF3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.41

#427CF3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427CF3

5.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427CF3	#FFFFFF	#000000	##000000
##427CF3	1.00	3.88	5.41	5.41
#FFFFFF	3.88	1.00	21.00	21.00
#000000	5.41	21.00	1.00	1.00
##000000	5.41	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#368AF7

Deuteranopia (green-blind)

#007AF1

Tritanopia (blue-blind)

#0098AC

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #427cf3;
/* rgb */ color: rgb(66, 124, 243);
/* oklch */ color: oklch(61.1% 0.189 262.6);

Tailwind

colors: {
  custom: {
    50: '#8ca1f8',
    500: '#427cf3',
    950: '#000000',
  },
}

SCSS

$custom: #427cf3;
$custom-light: #8ca1f8;
$custom-dark: #000000;

JSON

{
  "hex": "#427cf3",
  "rgb": {
    "r": 66,
    "g": 124,
    "b": 243
  },
  "hsl": {
    "h": 220.339,
    "s": 88.06,
    "l": 60.588
  },
  "oklch": {
    "l": 0.6112,
    "c": 0.18908,
    "h": 262.6
  },
  "luminance": 0.22045
}

Semantic roles & 50–950 ramp

primary

#427CF3

secondary

#EAD4A7

accent

#9A01E5

background

#F9F9FF

surface

#F2F2FF

border

#CCCCD7

text

#0E0E17

muted

#7E7E85

Preview Lab

Preview with #427CF3

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

Preview Lab → · Contrast checker → · Palette generator →