#424FCB#424FCB

#424FCB is a mid, vivid blue. Relative luminance 0.111; OKLCH L 49.4% C 0.190 H 272.7°. Best body text is #FFFFFF at 6.54:1 contrast (WCAG AA passes).

Color values

HEX	#424FCB
RGB	rgb(66, 79, 203)
HSL	hsl(234, 57%, 53%)
HSV	hsv(234, 67%, 80%)
CMYK	cmyk(67.5%, 61.1%, 0%, 20.4%)
CIE-LAB	lab(39.68, 35.02, -65.93)
CIE-LCH	lch(39.68, 74.65, 297.98°)
OKLab	oklab(49.4% 0.0089 -0.1901)
OKLCH	oklch(49.4% 0.19 272.7)
XYZ	xyz(15.8186, 11.0605, 57.7896)
Luminance	0.1106 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.14

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#424FCB #CBBE42

analogous

#4293CB #424FCB #7A42CB

triadic

#424FCB #CB424F #4FCB42

tetradic

#424FCB #CB4293 #CBBE42 #42CB7A

square

#424FCB #CB4293 #CBBE42 #42CB7A

split-complementary

#424FCB #CB7A42 #93CB42

monochromatic

#202873 #2D38A3 #424FCB #727CD8 #A2A8E5

Accessibility & contrast

On white

6.54

#424FCB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.21

#424FCB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #424FCB

6.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##424FCB	#FFFFFF	#000000	##FFFFFF
##424FCB	1.00	6.54	3.21	6.54
#FFFFFF	6.54	1.00	21.00	1.00
#000000	3.21	21.00	1.00	21.00
##FFFFFF	6.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0064CF

Deuteranopia (green-blind)

#0057C9

Tritanopia (blue-blind)

#006E85

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #424fcb;
/* rgb */ color: rgb(66, 79, 203);
/* oklch */ color: oklch(49.4% 0.190 272.7);

Tailwind

colors: {
  custom: {
    50: '#8780dc',
    500: '#424fcb',
    950: '#000000',
  },
}

SCSS

$custom: #424fcb;
$custom-light: #8780dc;
$custom-dark: #000000;

JSON

{
  "hex": "#424fcb",
  "rgb": {
    "r": 66,
    "g": 79,
    "b": 203
  },
  "hsl": {
    "h": 234.307,
    "s": 56.846,
    "l": 52.745
  },
  "oklch": {
    "l": 0.49396,
    "c": 0.19032,
    "h": 272.7
  },
  "luminance": 0.11062
}

Semantic roles & 50–950 ramp

primary

#424FCB

secondary

#D2CC97

accent

#D248E0

background

#F8F7FD

surface

#F0EEFB

border

#CBC9D4

text

#0D0A15

muted

#7D7C83

Preview Lab

Preview with #424FCB

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

Preview Lab → · Contrast checker → · Palette generator →