#374AB1#374AB1

#374AB1 is a mid, vivid blue. Relative luminance 0.089; OKLCH L 45.7% C 0.165 H 270.6°. Best body text is #FFFFFF at 7.56:1 contrast (WCAG AA passes).

Color values

HEX	#374AB1
RGB	rgb(55, 74, 177)
HSL	hsl(231, 53%, 45%)
HSV	hsv(231, 69%, 69%)
CMYK	cmyk(68.9%, 58.2%, 0%, 30.6%)
CIE-LAB	lab(35.76, 27.44, -57.12)
CIE-LCH	lch(35.76, 63.37, 295.66°)
OKLab	oklab(45.68% 0.0016 -0.1646)
OKLCH	oklch(45.68% 0.165 270.6)
XYZ	xyz(11.9574, 8.8830, 42.6709)
Luminance	0.0888 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374AB1 #B19E37

analogous

#3787B1 #374AB1 #6137B1

triadic

#374AB1 #B1374A #4AB137

tetradic

#374AB1 #B13787 #B19E37 #37B161

square

#374AB1 #B13787 #B19E37 #37B161

split-complementary

#374AB1 #B16137 #87B137

monochromatic

#1A2354 #283682 #374AB1 #5A6BCC #8895DA

Accessibility & contrast

On white

7.56

#374AB1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.78

#374AB1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374AB1

7.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374AB1	#FFFFFF	#000000	##FFFFFF
##374AB1	1.00	7.56	2.78	7.56
#FFFFFF	7.56	1.00	21.00	1.00
#000000	2.78	21.00	1.00	21.00
##FFFFFF	7.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005AB4

Deuteranopia (green-blind)

#004FAF

Tritanopia (blue-blind)

#006376

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #374ab1;
/* rgb */ color: rgb(55, 74, 177);
/* oklch */ color: oklch(45.7% 0.165 270.6);

Tailwind

colors: {
  custom: {
    50: '#7d7cc9',
    500: '#374ab1',
    950: '#000000',
  },
}

SCSS

$custom: #374ab1;
$custom-light: #7d7cc9;
$custom-dark: #000000;

JSON

{
  "hex": "#374ab1",
  "rgb": {
    "r": 55,
    "g": 74,
    "b": 177
  },
  "hsl": {
    "h": 230.656,
    "s": 52.586,
    "l": 45.49
  },
  "oklch": {
    "l": 0.45678,
    "c": 0.16457,
    "h": 270.6
  },
  "luminance": 0.08884
}

Semantic roles & 50–950 ramp

primary

#374AB1

secondary

#C4B980

accent

#C64CDC

background

#F8F7FC

surface

#EFEEF8

border

#CAC9D1

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #374AB1

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

Preview Lab → · Contrast checker → · Palette generator →