#374AB2#374AB2

#374AB2 is a mid, vivid blue. Relative luminance 0.089; OKLCH L 45.8% C 0.166 H 270.6°. Best body text is #FFFFFF at 7.54:1 contrast (WCAG AA passes).

Color values

HEX	#374AB2
RGB	rgb(55, 74, 178)
HSL	hsl(231, 53%, 46%)
HSV	hsv(231, 69%, 70%)
CMYK	cmyk(69.1%, 58.4%, 0%, 30.2%)
CIE-LAB	lab(35.84, 27.80, -57.59)
CIE-LCH	lch(35.84, 63.95, 295.77°)
OKLab	oklab(45.76% 0.0016 -0.1659)
OKLCH	oklch(45.76% 0.166 270.6)
XYZ	xyz(12.0575, 8.9230, 43.1977)
Luminance	0.0892 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374AB2 #B29F37

analogous

#3787B2 #374AB2 #6137B2

triadic

#374AB2 #B2374A #4AB237

tetradic

#374AB2 #B23787 #B29F37 #37B261

square

#374AB2 #B23787 #B29F37 #37B261

split-complementary

#374AB2 #B26137 #87B237

monochromatic

#1A2354 #293783 #374AB2 #5A6CCC #8995DB

Accessibility & contrast

On white

7.54

#374AB2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.78

#374AB2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374AB2

7.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374AB2	#FFFFFF	#000000	##FFFFFF
##374AB2	1.00	7.54	2.78	7.54
#FFFFFF	7.54	1.00	21.00	1.00
#000000	2.78	21.00	1.00	21.00
##FFFFFF	7.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005AB5

Deuteranopia (green-blind)

#004FB0

Tritanopia (blue-blind)

#006477

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #374ab2;
/* rgb */ color: rgb(55, 74, 178);
/* oklch */ color: oklch(45.8% 0.166 270.6);

Tailwind

colors: {
  custom: {
    50: '#7d7cca',
    500: '#374ab2',
    950: '#000000',
  },
}

SCSS

$custom: #374ab2;
$custom-light: #7d7cca;
$custom-dark: #000000;

JSON

{
  "hex": "#374ab2",
  "rgb": {
    "r": 55,
    "g": 74,
    "b": 178
  },
  "hsl": {
    "h": 230.732,
    "s": 52.79,
    "l": 45.686
  },
  "oklch": {
    "l": 0.4576,
    "c": 0.16594,
    "h": 270.6
  },
  "luminance": 0.08924
}

Semantic roles & 50–950 ramp

primary

#374AB2

secondary

#C5BA80

accent

#C64CDC

background

#F8F7FC

surface

#EFEEF8

border

#CAC9D1

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #374AB2

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

Preview Lab → · Contrast checker → · Palette generator →