#374AB7#374AB7

#374AB7 is a mid, vivid blue. Relative luminance 0.091; OKLCH L 46.2% C 0.173 H 270.5°. Best body text is #FFFFFF at 7.43:1 contrast (WCAG AA passes).

Color values

HEX	#374AB7
RGB	rgb(55, 74, 183)
HSL	hsl(231, 54%, 47%)
HSV	hsv(231, 70%, 72%)
CMYK	cmyk(69.9%, 59.6%, 0%, 28.2%)
CIE-LAB	lab(36.23, 29.61, -59.90)
CIE-LCH	lch(36.23, 66.82, 296.30°)
OKLab	oklab(46.18% 0.0016 -0.1727)
OKLCH	oklch(46.18% 0.173 270.5)
XYZ	xyz(12.5687, 9.1274, 45.8900)
Luminance	0.0913 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374AB7 #B7A437

analogous

#378AB7 #374AB7 #6437B7

triadic

#374AB7 #B7374A #4AB737

tetradic

#374AB7 #B7378A #B7A437 #37B764

square

#374AB7 #B7378A #B7A437 #37B764

split-complementary

#374AB7 #B76437 #8AB737

monochromatic

#1B2459 #293788 #374AB7 #5D6ECE #8C98DC

Accessibility & contrast

On white

7.43

#374AB7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.83

#374AB7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374AB7

7.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374AB7	#FFFFFF	#000000	##FFFFFF
##374AB7	1.00	7.43	2.83	7.43
#FFFFFF	7.43	1.00	21.00	1.00
#000000	2.83	21.00	1.00	21.00
##FFFFFF	7.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BBB

Deuteranopia (green-blind)

#0050B5

Tritanopia (blue-blind)

#006579

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #374ab7;
/* rgb */ color: rgb(55, 74, 183);
/* oklch */ color: oklch(46.2% 0.173 270.5);

Tailwind

colors: {
  custom: {
    50: '#7e7ccd',
    500: '#374ab7',
    950: '#000000',
  },
}

SCSS

$custom: #374ab7;
$custom-light: #7e7ccd;
$custom-dark: #000000;

JSON

{
  "hex": "#374ab7",
  "rgb": {
    "r": 55,
    "g": 74,
    "b": 183
  },
  "hsl": {
    "h": 231.094,
    "s": 53.782,
    "l": 46.667
  },
  "oklch": {
    "l": 0.46176,
    "c": 0.17274,
    "h": 270.5
  },
  "luminance": 0.09129
}

Semantic roles & 50–950 ramp

primary

#374AB7

secondary

#C7BD83

accent

#C74BDD

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0914

muted

#7C7B82

Preview Lab

Preview with #374AB7

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

Preview Lab → · Contrast checker → · Palette generator →