#427DF3#427DF3

#427DF3 is a mid, vivid blue. Relative luminance 0.223; OKLCH L 61.3% C 0.188 H 262.3°. Best body text is #000000 at 5.46:1 contrast (WCAG AA passes).

Color values

HEX	#427DF3
RGB	rgb(66, 125, 243)
HSL	hsl(220, 88%, 61%)
HSV	hsv(220, 73%, 95%)
CMYK	cmyk(72.8%, 48.6%, 0%, 4.7%)
CIE-LAB	lab(54.34, 20.36, -64.83)
CIE-LCH	lch(54.34, 67.95, 287.44°)
OKLab	oklab(61.32% -0.025 -0.1862)
OKLCH	oklch(61.32% 0.188 262.3)
XYZ	xyz(25.7523, 22.2937, 87.7226)
Luminance	0.2230 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427DF3 #F3B842

analogous

#42D5F3 #427DF3 #5F42F3

triadic

#427DF3 #F3427D #7DF342

tetradic

#427DF3 #F342D5 #F3B842 #42F35F

square

#427DF3 #F342D5 #F3B842 #42F35F

split-complementary

#427DF3 #F35F42 #D5F342

monochromatic

#0B42AF #0F58E9 #427DF3 #7CA5F7 #B5CCFA

Accessibility & contrast

On white

3.85

#427DF3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.46

#427DF3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427DF3

5.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427DF3	#FFFFFF	#000000	##000000
##427DF3	1.00	3.85	5.46	5.46
#FFFFFF	3.85	1.00	21.00	21.00
#000000	5.46	21.00	1.00	1.00
##000000	5.46	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#398BF7

Deuteranopia (green-blind)

#007AF1

Tritanopia (blue-blind)

#0099AC

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #427df3;
/* rgb */ color: rgb(66, 125, 243);
/* oklch */ color: oklch(61.3% 0.188 262.3);

Tailwind

colors: {
  custom: {
    50: '#8ca2f8',
    500: '#427df3',
    950: '#000000',
  },
}

SCSS

$custom: #427df3;
$custom-light: #8ca2f8;
$custom-dark: #000000;

JSON

{
  "hex": "#427df3",
  "rgb": {
    "r": 66,
    "g": 125,
    "b": 243
  },
  "hsl": {
    "h": 220,
    "s": 88.06,
    "l": 60.588
  },
  "oklch": {
    "l": 0.61323,
    "c": 0.18792,
    "h": 262.3
  },
  "luminance": 0.22297
}

Semantic roles & 50–950 ramp

primary

#427DF3

secondary

#EAD4A7

accent

#9901E5

background

#F9F9FF

surface

#F2F2FF

border

#CCCCD7

text

#0E0E17

muted

#7E7E85

Preview Lab

Preview with #427DF3

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

Preview Lab → · Contrast checker → · Palette generator →