#424FBB#424FBB

#424FBB is a mid, vivid blue. Relative luminance 0.103; OKLCH L 48.1% C 0.169 H 273.1°. Best body text is #FFFFFF at 6.85:1 contrast (WCAG AA passes).

Color values

HEX	#424FBB
RGB	rgb(66, 79, 187)
HSL	hsl(234, 48%, 50%)
HSV	hsv(234, 65%, 73%)
CMYK	cmyk(64.7%, 57.8%, 0%, 26.7%)
CIE-LAB	lab(38.44, 29.46, -58.63)
CIE-LCH	lch(38.44, 65.61, 296.68°)
OKLab	oklab(48.09% 0.0091 -0.1687)
OKLCH	oklch(48.09% 0.169 273.1)
XYZ	xyz(14.0094, 10.3369, 48.2610)
Luminance	0.1034 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#424FBB #BBAE42

analogous

#428BBB #424FBB #7242BB

triadic

#424FBB #BB424F #4FBB42

tetradic

#424FBB #BB428B #BBAE42 #42BB72

square

#424FBB #BB428B #BBAE42 #42BB72

split-complementary

#424FBB #BB7242 #8BBB42

monochromatic

#222961 #323C8E #424FBB #6E78CC #9CA2DC

Accessibility & contrast

On white

6.85

#424FBB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.07

#424FBB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #424FBB

6.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##424FBB	#FFFFFF	#000000	##FFFFFF
##424FBB	1.00	6.85	3.07	6.85
#FFFFFF	6.85	1.00	21.00	1.00
#000000	3.07	21.00	1.00	21.00
##FFFFFF	6.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0060BF

Deuteranopia (green-blind)

#0055B9

Tritanopia (blue-blind)

#00697D

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #424fbb;
/* rgb */ color: rgb(66, 79, 187);
/* oklch */ color: oklch(48.1% 0.169 273.1);

Tailwind

colors: {
  custom: {
    50: '#8480d0',
    500: '#424fbb',
    950: '#000000',
  },
}

SCSS

$custom: #424fbb;
$custom-light: #8480d0;
$custom-dark: #000000;

JSON

{
  "hex": "#424fbb",
  "rgb": {
    "r": 66,
    "g": 79,
    "b": 187
  },
  "hsl": {
    "h": 233.554,
    "s": 47.826,
    "l": 49.608
  },
  "oklch": {
    "l": 0.48086,
    "c": 0.16891,
    "h": 273.1
  },
  "luminance": 0.10338
}

Semantic roles & 50–950 ramp

primary

#424FBB

secondary

#C8C291

accent

#C950D7

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0C0A14

muted

#7D7C82

Preview Lab

Preview with #424FBB

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

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