#424CA1#424CA1

#424CA1 is a mid, vivid blue. Relative luminance 0.089; OKLCH L 45.5% C 0.136 H 274.6°. Best body text is #FFFFFF at 7.55:1 contrast (WCAG AA passes).

Color values

HEX	#424CA1
RGB	rgb(66, 76, 161)
HSL	hsl(234, 42%, 45%)
HSV	hsv(234, 59%, 63%)
CMYK	cmyk(59%, 52.8%, 0%, 36.9%)
CIE-LAB	lab(35.79, 22.35, -47.50)
CIE-LCH	lch(35.79, 52.49, 295.20°)
OKLab	oklab(45.51% 0.0109 -0.1359)
OKLCH	oklch(45.51% 0.136 274.6)
XYZ	xyz(11.2621, 8.8995, 34.8356)
Luminance	0.0890 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#424CA1 #A19742

analogous

#427CA1 #424CA1 #6842A1

triadic

#424CA1 #A1424C #4CA142

tetradic

#424CA1 #A1427C #A19742 #42A168

square

#424CA1 #A1427C #A19742 #42A168

split-complementary

#424CA1 #A16842 #7CA142

monochromatic

#1E234A #303876 #424CA1 #626BBF #8D94D0

Accessibility & contrast

On white

7.55

#424CA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.78

#424CA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #424CA1

7.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##424CA1	#FFFFFF	#000000	##FFFFFF
##424CA1	1.00	7.55	2.78	7.55
#FFFFFF	7.55	1.00	21.00	1.00
#000000	2.78	21.00	1.00	21.00
##FFFFFF	7.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C58A4

Deuteranopia (green-blind)

#03509F

Tritanopia (blue-blind)

#005F6F

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #424ca1;
/* rgb */ color: rgb(66, 76, 161);
/* oklch */ color: oklch(45.5% 0.136 274.6);

Tailwind

colors: {
  custom: {
    50: '#7f7dbd',
    500: '#424ca1',
    950: '#000000',
  },
}

SCSS

$custom: #424ca1;
$custom-light: #7f7dbd;
$custom-dark: #000000;

JSON

{
  "hex": "#424ca1",
  "rgb": {
    "r": 66,
    "g": 76,
    "b": 161
  },
  "hsl": {
    "h": 233.684,
    "s": 41.85,
    "l": 44.51
  },
  "oklch": {
    "l": 0.4551,
    "c": 0.13639,
    "h": 274.6
  },
  "luminance": 0.089
}

Semantic roles & 50–950 ramp

primary

#424CA1

secondary

#BBB683

accent

#C556D2

background

#F8F7FB

surface

#EFEEF7

border

#CAC9D0

text

#0B0912

muted

#7C7B81

Preview Lab

Preview with #424CA1

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

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