#424BBB#424BBB

#424BBB is a mid, vivid blue. Relative luminance 0.098; OKLCH L 47.3% C 0.174 H 274.2°. Best body text is #FFFFFF at 7.11:1 contrast (WCAG AA passes).

Color values

HEX	#424BBB
RGB	rgb(66, 75, 187)
HSL	hsl(236, 48%, 50%)
HSV	hsv(236, 65%, 73%)
CMYK	cmyk(64.7%, 59.9%, 0%, 26.7%)
CIE-LAB	lab(37.44, 32.00, -60.26)
CIE-LCH	lch(37.44, 68.23, 297.98°)
OKLab	oklab(47.34% 0.0126 -0.1735)
OKLCH	oklch(47.34% 0.174 274.2)
XYZ	xyz(13.7295, 9.7771, 48.1677)
Luminance	0.0978 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#424BBB #BBB242

analogous

#4288BB #424BBB #7642BB

triadic

#424BBB #BB424B #4BBB42

tetradic

#424BBB #BB4288 #BBB242 #42BB76

square

#424BBB #BB4288 #BBB242 #42BB76

split-complementary

#424BBB #BB7642 #88BB42

monochromatic

#222761 #32398E #424BBB #6E75CC #9CA0DC

Accessibility & contrast

On white

7.11

#424BBB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.96

#424BBB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #424BBB

7.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##424BBB	#FFFFFF	#000000	##FFFFFF
##424BBB	1.00	7.11	2.96	7.11
#FFFFFF	7.11	1.00	21.00	1.00
#000000	2.96	21.00	1.00	21.00
##FFFFFF	7.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005EBF

Deuteranopia (green-blind)

#0053B9

Tritanopia (blue-blind)

#00677C

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #424bbb;
/* rgb */ color: rgb(66, 75, 187);
/* oklch */ color: oklch(47.3% 0.174 274.2);

Tailwind

colors: {
  custom: {
    50: '#847dd0',
    500: '#424bbb',
    950: '#000000',
  },
}

SCSS

$custom: #424bbb;
$custom-light: #847dd0;
$custom-dark: #000000;

JSON

{
  "hex": "#424bbb",
  "rgb": {
    "r": 66,
    "g": 75,
    "b": 187
  },
  "hsl": {
    "h": 235.537,
    "s": 47.826,
    "l": 49.608
  },
  "oklch": {
    "l": 0.47344,
    "c": 0.17395,
    "h": 274.2
  },
  "luminance": 0.09778
}

Semantic roles & 50–950 ramp

primary

#424BBB

secondary

#C8C491

accent

#CD50D7

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0C0914

muted

#7D7B82

Preview Lab

Preview with #424BBB

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

Preview Lab → · Contrast checker → · Palette generator →