#374BB7#374BB7

#374BB7 is a mid, vivid blue. Relative luminance 0.093; OKLCH L 46.4% C 0.172 H 270.3°. Best body text is #FFFFFF at 7.36:1 contrast (WCAG AA passes).

Color values

HEX	#374BB7
RGB	rgb(55, 75, 183)
HSL	hsl(231, 54%, 47%)
HSV	hsv(231, 70%, 72%)
CMYK	cmyk(69.9%, 59%, 0%, 28.2%)
CIE-LAB	lab(36.48, 28.96, -59.49)
CIE-LCH	lch(36.48, 66.16, 295.96°)
OKLab	oklab(46.37% 0.0009 -0.1715)
OKLCH	oklch(46.37% 0.172 270.3)
XYZ	xyz(12.6360, 9.2620, 45.9124)
Luminance	0.0926 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374BB7 #B7A337

analogous

#378BB7 #374BB7 #6337B7

triadic

#374BB7 #B7374B #4BB737

tetradic

#374BB7 #B7378B #B7A337 #37B763

square

#374BB7 #B7378B #B7A337 #37B763

split-complementary

#374BB7 #B76337 #8BB737

monochromatic

#1B2459 #293888 #374BB7 #5D6FCE #8C99DC

Accessibility & contrast

On white

7.36

#374BB7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.85

#374BB7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374BB7

7.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374BB7	#FFFFFF	#000000	##FFFFFF
##374BB7	1.00	7.36	2.85	7.36
#FFFFFF	7.36	1.00	21.00	1.00
#000000	2.85	21.00	1.00	21.00
##FFFFFF	7.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CBB

Deuteranopia (green-blind)

#0050B5

Tritanopia (blue-blind)

#006679

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #374bb7;
/* rgb */ color: rgb(55, 75, 183);
/* oklch */ color: oklch(46.4% 0.172 270.3);

Tailwind

colors: {
  custom: {
    50: '#7e7dcd',
    500: '#374bb7',
    950: '#000000',
  },
}

SCSS

$custom: #374bb7;
$custom-light: #7e7dcd;
$custom-dark: #000000;

JSON

{
  "hex": "#374bb7",
  "rgb": {
    "r": 55,
    "g": 75,
    "b": 183
  },
  "hsl": {
    "h": 230.625,
    "s": 53.782,
    "l": 46.667
  },
  "oklch": {
    "l": 0.46366,
    "c": 0.1715,
    "h": 270.3
  },
  "luminance": 0.09263
}

Semantic roles & 50–950 ramp

primary

#374BB7

secondary

#C7BC83

accent

#C64BDD

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0914

muted

#7C7B82

Preview Lab

Preview with #374BB7

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

Preview Lab → · Contrast checker → · Palette generator →