#424F9B#424F9B

#424F9B is a mid, vivid blue. Relative luminance 0.091; OKLCH L 45.7% C 0.124 H 273.2°. Best body text is #FFFFFF at 7.44:1 contrast (WCAG AA passes).

Color values

HEX	#424F9B
RGB	rgb(66, 79, 155)
HSL	hsl(231, 40%, 43%)
HSV	hsv(231, 57%, 61%)
CMYK	cmyk(57.4%, 49%, 0%, 39.2%)
CIE-LAB	lab(36.21, 18.32, -43.22)
CIE-LCH	lch(36.21, 46.94, 292.97°)
OKLab	oklab(45.7% 0.007 -0.1233)
OKLCH	oklch(45.7% 0.124 273.2)
XYZ	xyz(10.9572, 9.1160, 32.1862)
Luminance	0.0912 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#424F9B #9B8E42

analogous

#427B9B #424F9B #61429B

triadic

#424F9B #9B424F #4F9B42

tetradic

#424F9B #9B427B #9B8E42 #429B61

square

#424F9B #9B427B #9B8E42 #429B61

split-complementary

#424F9B #9B6142 #7B9B42

monochromatic

#1D2345 #303970 #424F9B #5F6DBB #8A94CD

Accessibility & contrast

On white

7.44

#424F9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.82

#424F9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #424F9B

7.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##424F9B	#FFFFFF	#000000	##FFFFFF
##424F9B	1.00	7.44	2.82	7.44
#FFFFFF	7.44	1.00	21.00	1.00
#000000	2.82	21.00	1.00	21.00
##FFFFFF	7.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A599E

Deuteranopia (green-blind)

#1D5299

Tritanopia (blue-blind)

#0C606D

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #424f9b;
/* rgb */ color: rgb(66, 79, 155);
/* oklch */ color: oklch(45.7% 0.124 273.2);

Tailwind

colors: {
  custom: {
    50: '#7e80b9',
    500: '#424f9b',
    950: '#000000',
  },
}

SCSS

$custom: #424f9b;
$custom-light: #7e80b9;
$custom-dark: #000000;

JSON

{
  "hex": "#424f9b",
  "rgb": {
    "r": 66,
    "g": 79,
    "b": 155
  },
  "hsl": {
    "h": 231.236,
    "s": 40.271,
    "l": 43.333
  },
  "oklch": {
    "l": 0.45697,
    "c": 0.12354,
    "h": 273.2
  },
  "luminance": 0.09117
}

Semantic roles & 50–950 ramp

primary

#424F9B

secondary

#B8B081

accent

#BF58D0

background

#F8F7FB

surface

#EFEEF6

border

#CAC9D0

text

#0A0A11

muted

#7C7C80

Preview Lab

Preview with #424F9B

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

Preview Lab → · Contrast checker → · Palette generator →