#374AB9#374AB9

#374AB9 is a mid, vivid blue. Relative luminance 0.092; OKLCH L 46.3% C 0.175 H 270.5°. Best body text is #FFFFFF at 7.39:1 contrast (WCAG AA passes).

Color values

HEX	#374AB9
RGB	rgb(55, 74, 185)
HSL	hsl(231, 54%, 47%)
HSV	hsv(231, 70%, 73%)
CMYK	cmyk(70.3%, 60%, 0%, 27.5%)
CIE-LAB	lab(36.39, 30.33, -60.82)
CIE-LCH	lch(36.39, 67.96, 296.51°)
OKLab	oklab(46.34% 0.0016 -0.1754)
OKLCH	oklch(46.34% 0.175 270.5)
XYZ	xyz(12.7783, 9.2113, 46.9941)
Luminance	0.0921 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374AB9 #B9A637

analogous

#378BB9 #374AB9 #6537B9

triadic

#374AB9 #B9374A #4AB937

tetradic

#374AB9 #B9378B #B9A637 #37B965

square

#374AB9 #B9378B #B9A637 #37B965

split-complementary

#374AB9 #B96537 #8BB937

monochromatic

#1B245B #29378A #374AB9 #5E6FCF #8D99DD

Accessibility & contrast

On white

7.39

#374AB9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.84

#374AB9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374AB9

7.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374AB9	#FFFFFF	#000000	##FFFFFF
##374AB9	1.00	7.39	2.84	7.39
#FFFFFF	7.39	1.00	21.00	1.00
#000000	2.84	21.00	1.00	21.00
##FFFFFF	7.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CBD

Deuteranopia (green-blind)

#0050B7

Tritanopia (blue-blind)

#00667A

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #374ab9;
/* rgb */ color: rgb(55, 74, 185);
/* oklch */ color: oklch(46.3% 0.175 270.5);

Tailwind

colors: {
  custom: {
    50: '#7f7ccf',
    500: '#374ab9',
    950: '#000000',
  },
}

SCSS

$custom: #374ab9;
$custom-light: #7f7ccf;
$custom-dark: #000000;

JSON

{
  "hex": "#374ab9",
  "rgb": {
    "r": 55,
    "g": 74,
    "b": 185
  },
  "hsl": {
    "h": 231.231,
    "s": 54.167,
    "l": 47.059
  },
  "oklch": {
    "l": 0.46344,
    "c": 0.17544,
    "h": 270.5
  },
  "luminance": 0.09213
}

Semantic roles & 50–950 ramp

primary

#374AB9

secondary

#C8BE84

accent

#C84ADE

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0914

muted

#7C7B82

Preview Lab

Preview with #374AB9

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

Preview Lab → · Contrast checker → · Palette generator →