#424CBB#424CBB

#424CBB is a mid, vivid blue. Relative luminance 0.099; OKLCH L 47.5% C 0.173 H 273.9°. Best body text is #FFFFFF at 7.04:1 contrast (WCAG AA passes).

Color values

HEX	#424CBB
RGB	rgb(66, 76, 187)
HSL	hsl(235, 48%, 50%)
HSV	hsv(235, 65%, 73%)
CMYK	cmyk(64.7%, 59.4%, 0%, 26.7%)
CIE-LAB	lab(37.69, 31.37, -59.85)
CIE-LCH	lch(37.69, 67.57, 297.66°)
OKLab	oklab(47.53% 0.0117 -0.1723)
OKLCH	oklch(47.53% 0.173 273.9)
XYZ	xyz(13.7979, 9.9138, 48.1905)
Luminance	0.0992 (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

#424CBB #BBB142

analogous

#4289BB #424CBB #7442BB

triadic

#424CBB #BB424C #4CBB42

tetradic

#424CBB #BB4289 #BBB142 #42BB74

square

#424CBB #BB4289 #BBB142 #42BB74

split-complementary

#424CBB #BB7442 #89BB42

monochromatic

#222761 #323A8E #424CBB #6E76CC #9CA1DC

Accessibility & contrast

On white

7.04

#424CBB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.98

#424CBB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #424CBB

7.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##424CBB	#FFFFFF	#000000	##FFFFFF
##424CBB	1.00	7.04	2.98	7.04
#FFFFFF	7.04	1.00	21.00	1.00
#000000	2.98	21.00	1.00	21.00
##FFFFFF	7.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005EBF

Deuteranopia (green-blind)

#0053B9

Tritanopia (blue-blind)

#00677C

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #424cbb;
/* rgb */ color: rgb(66, 76, 187);
/* oklch */ color: oklch(47.5% 0.173 273.9);

Tailwind

colors: {
  custom: {
    50: '#847ed0',
    500: '#424cbb',
    950: '#000000',
  },
}

SCSS

$custom: #424cbb;
$custom-light: #847ed0;
$custom-dark: #000000;

JSON

{
  "hex": "#424cbb",
  "rgb": {
    "r": 66,
    "g": 76,
    "b": 187
  },
  "hsl": {
    "h": 235.041,
    "s": 47.826,
    "l": 49.608
  },
  "oklch": {
    "l": 0.47527,
    "c": 0.1727,
    "h": 273.9
  },
  "luminance": 0.09915
}

Semantic roles & 50–950 ramp

primary

#424CBB

secondary

#C8C391

accent

#CC50D7

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0C0A14

muted

#7D7C82

Preview Lab

Preview with #424CBB

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

Preview Lab → · Contrast checker → · Palette generator →