#374BB9#374BB9

#374BB9 is a mid, vivid blue. Relative luminance 0.093; OKLCH L 46.5% C 0.174 H 270.3°. Best body text is #FFFFFF at 7.32:1 contrast (WCAG AA passes).

Color values

HEX	#374BB9
RGB	rgb(55, 75, 185)
HSL	hsl(231, 54%, 47%)
HSV	hsv(231, 70%, 73%)
CMYK	cmyk(70.3%, 59.5%, 0%, 27.5%)
CIE-LAB	lab(36.64, 29.69, -60.41)
CIE-LCH	lch(36.64, 67.31, 296.17°)
OKLab	oklab(46.53% 0.0009 -0.1742)
OKLCH	oklch(46.53% 0.174 270.3)
XYZ	xyz(12.8456, 9.3459, 47.0165)
Luminance	0.0935 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374BB9 #B9A537

analogous

#378CB9 #374BB9 #6437B9

triadic

#374BB9 #B9374B #4BB937

tetradic

#374BB9 #B9378C #B9A537 #37B964

square

#374BB9 #B9378C #B9A537 #37B964

split-complementary

#374BB9 #B96437 #8CB937

monochromatic

#1B255B #29388A #374BB9 #5E6FCF #8D9ADD

Accessibility & contrast

On white

7.32

#374BB9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.87

#374BB9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374BB9

7.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374BB9	#FFFFFF	#000000	##FFFFFF
##374BB9	1.00	7.32	2.87	7.32
#FFFFFF	7.32	1.00	21.00	1.00
#000000	2.87	21.00	1.00	21.00
##FFFFFF	7.32	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: #374bb9;
/* rgb */ color: rgb(55, 75, 185);
/* oklch */ color: oklch(46.5% 0.174 270.3);

Tailwind

colors: {
  custom: {
    50: '#7f7dcf',
    500: '#374bb9',
    950: '#000000',
  },
}

SCSS

$custom: #374bb9;
$custom-light: #7f7dcf;
$custom-dark: #000000;

JSON

{
  "hex": "#374bb9",
  "rgb": {
    "r": 55,
    "g": 75,
    "b": 185
  },
  "hsl": {
    "h": 230.769,
    "s": 54.167,
    "l": 47.059
  },
  "oklch": {
    "l": 0.46533,
    "c": 0.1742,
    "h": 270.3
  },
  "luminance": 0.09347
}

Semantic roles & 50–950 ramp

primary

#374BB9

secondary

#C8BD84

accent

#C74ADE

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0914

muted

#7C7B82

Preview Lab

Preview with #374BB9

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

Preview Lab → · Contrast checker → · Palette generator →