#424FC9#424FC9

#424FC9 is a mid, vivid blue. Relative luminance 0.110; OKLCH L 49.2% C 0.188 H 272.7°. Best body text is #FFFFFF at 6.58:1 contrast (WCAG AA passes).

Color values

HEX	#424FC9
RGB	rgb(66, 79, 201)
HSL	hsl(234, 56%, 52%)
HSV	hsv(234, 67%, 79%)
CMYK	cmyk(67.2%, 60.7%, 0%, 21.2%)
CIE-LAB	lab(39.52, 34.33, -65.03)
CIE-LCH	lch(39.52, 73.53, 297.83°)
OKLab	oklab(49.23% 0.009 -0.1875)
OKLCH	oklch(49.23% 0.188 272.7)
XYZ	xyz(15.5818, 10.9658, 56.5425)
Luminance	0.1097 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#424FC9 #C9BC42

analogous

#4293C9 #424FC9 #7842C9

triadic

#424FC9 #C9424F #4FC942

tetradic

#424FC9 #C94293 #C9BC42 #42C978

square

#424FC9 #C94293 #C9BC42 #42C978

split-complementary

#424FC9 #C97842 #93C942

monochromatic

#202870 #2E39A0 #424FC9 #727BD7 #A1A8E4

Accessibility & contrast

On white

6.58

#424FC9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.19

#424FC9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #424FC9

6.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##424FC9	#FFFFFF	#000000	##FFFFFF
##424FC9	1.00	6.58	3.19	6.58
#FFFFFF	6.58	1.00	21.00	1.00
#000000	3.19	21.00	1.00	21.00
##FFFFFF	6.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063CD

Deuteranopia (green-blind)

#0057C7

Tritanopia (blue-blind)

#006E84

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #424fc9;
/* rgb */ color: rgb(66, 79, 201);
/* oklch */ color: oklch(49.2% 0.188 272.7);

Tailwind

colors: {
  custom: {
    50: '#8680da',
    500: '#424fc9',
    950: '#000000',
  },
}

SCSS

$custom: #424fc9;
$custom-light: #8680da;
$custom-dark: #000000;

JSON

{
  "hex": "#424fc9",
  "rgb": {
    "r": 66,
    "g": 79,
    "b": 201
  },
  "hsl": {
    "h": 234.222,
    "s": 55.556,
    "l": 52.353
  },
  "oklch": {
    "l": 0.49228,
    "c": 0.18769,
    "h": 272.7
  },
  "luminance": 0.10967
}

Semantic roles & 50–950 ramp

primary

#424FC9

secondary

#D1CB96

accent

#D049DF

background

#F8F7FD

surface

#F0EEFB

border

#CBC9D4

text

#0D0A15

muted

#7D7C83

Preview Lab

Preview with #424FC9

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

Preview Lab → · Contrast checker → · Palette generator →