#374BB8#374BB8

#374BB8 is a mid, vivid blue. Relative luminance 0.093; OKLCH L 46.4% C 0.173 H 270.3°. Best body text is #FFFFFF at 7.34:1 contrast (WCAG AA passes).

Color values

HEX	#374BB8
RGB	rgb(55, 75, 184)
HSL	hsl(231, 54%, 47%)
HSV	hsv(231, 70%, 72%)
CMYK	cmyk(70.1%, 59.2%, 0%, 27.8%)
CIE-LAB	lab(36.56, 29.33, -59.95)
CIE-LCH	lch(36.56, 66.73, 296.07°)
OKLab	oklab(46.45% 0.0009 -0.1728)
OKLCH	oklch(46.45% 0.173 270.3)
XYZ	xyz(12.7404, 9.3038, 46.4625)
Luminance	0.0930 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374BB8 #B8A437

analogous

#378CB8 #374BB8 #6437B8

triadic

#374BB8 #B8374B #4BB837

tetradic

#374BB8 #B8378C #B8A437 #37B864

square

#374BB8 #B8378C #B8A437 #37B864

split-complementary

#374BB8 #B86437 #8CB837

monochromatic

#1B255A #293889 #374BB8 #5D6FCF #8D99DD

Accessibility & contrast

On white

7.34

#374BB8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.86

#374BB8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374BB8

7.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374BB8	#FFFFFF	#000000	##FFFFFF
##374BB8	1.00	7.34	2.86	7.34
#FFFFFF	7.34	1.00	21.00	1.00
#000000	2.86	21.00	1.00	21.00
##FFFFFF	7.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CBC

Deuteranopia (green-blind)

#0050B6

Tritanopia (blue-blind)

#00667A

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #374bb8;
/* rgb */ color: rgb(55, 75, 184);
/* oklch */ color: oklch(46.4% 0.173 270.3);

Tailwind

colors: {
  custom: {
    50: '#7e7dce',
    500: '#374bb8',
    950: '#000000',
  },
}

SCSS

$custom: #374bb8;
$custom-light: #7e7dce;
$custom-dark: #000000;

JSON

{
  "hex": "#374bb8",
  "rgb": {
    "r": 55,
    "g": 75,
    "b": 184
  },
  "hsl": {
    "h": 230.698,
    "s": 53.975,
    "l": 46.863
  },
  "oklch": {
    "l": 0.46449,
    "c": 0.17285,
    "h": 270.3
  },
  "luminance": 0.09305
}

Semantic roles & 50–950 ramp

primary

#374BB8

secondary

#C7BD84

accent

#C74ADD

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0914

muted

#7C7B82

Preview Lab

Preview with #374BB8

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

Preview Lab → · Contrast checker → · Palette generator →