#424CA5#424CA5

#424CA5 is a mid, vivid blue. Relative luminance 0.090; OKLCH L 45.8% C 0.142 H 274.5°. Best body text is #FFFFFF at 7.48:1 contrast (WCAG AA passes).

Color values

HEX	#424CA5
RGB	rgb(66, 76, 165)
HSL	hsl(234, 43%, 45%)
HSV	hsv(234, 60%, 65%)
CMYK	cmyk(60%, 53.9%, 0%, 35.3%)
CIE-LAB	lab(36.07, 23.73, -49.45)
CIE-LCH	lch(36.07, 54.85, 295.64°)
OKLab	oklab(45.81% 0.0112 -0.1417)
OKLCH	oklch(45.81% 0.142 274.5)
XYZ	xyz(11.6205, 9.0429, 36.7231)
Luminance	0.0904 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#424CA5 #A59B42

analogous

#427EA5 #424CA5 #6942A5

triadic

#424CA5 #A5424C #4CA542

tetradic

#424CA5 #A5427E #A59B42 #42A569

square

#424CA5 #A5427E #A59B42 #42A569

split-complementary

#424CA5 #A56942 #7EA542

monochromatic

#1F244E #313879 #424CA5 #636DC1 #8F96D2

Accessibility & contrast

On white

7.48

#424CA5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.81

#424CA5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #424CA5

7.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##424CA5	#FFFFFF	#000000	##FFFFFF
##424CA5	1.00	7.48	2.81	7.48
#FFFFFF	7.48	1.00	21.00	1.00
#000000	2.81	21.00	1.00	21.00
##FFFFFF	7.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1559A8

Deuteranopia (green-blind)

#0051A3

Tritanopia (blue-blind)

#006171

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #424ca5;
/* rgb */ color: rgb(66, 76, 165);
/* oklch */ color: oklch(45.8% 0.142 274.5);

Tailwind

colors: {
  custom: {
    50: '#807dc0',
    500: '#424ca5',
    950: '#000000',
  },
}

SCSS

$custom: #424ca5;
$custom-light: #807dc0;
$custom-dark: #000000;

JSON

{
  "hex": "#424ca5",
  "rgb": {
    "r": 66,
    "g": 76,
    "b": 165
  },
  "hsl": {
    "h": 233.939,
    "s": 42.857,
    "l": 45.294
  },
  "oklch": {
    "l": 0.45806,
    "c": 0.14213,
    "h": 274.5
  },
  "luminance": 0.09044
}

Semantic roles & 50–950 ramp

primary

#424CA5

secondary

#BDB885

accent

#C655D3

background

#F8F7FB

surface

#EFEEF7

border

#CAC9D0

text

#0B0912

muted

#7C7B81

Preview Lab

Preview with #424CA5

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

Preview Lab → · Contrast checker → · Palette generator →