#374BB4#374BB4

#374BB4 is a mid, vivid blue. Relative luminance 0.091; OKLCH L 46.1% C 0.167 H 270.3°. Best body text is #FFFFFF at 7.43:1 contrast (WCAG AA passes).

Color values

HEX	#374BB4
RGB	rgb(55, 75, 180)
HSL	hsl(230, 53%, 46%)
HSV	hsv(230, 69%, 71%)
CMYK	cmyk(69.4%, 58.3%, 0%, 29.4%)
CIE-LAB	lab(36.25, 27.88, -58.10)
CIE-LCH	lch(36.25, 64.44, 295.63°)
OKLab	oklab(46.12% 0.0008 -0.1674)
OKLCH	oklch(46.12% 0.167 270.3)
XYZ	xyz(12.3270, 9.1385, 44.2854)
Luminance	0.0914 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374BB4 #B4A037

analogous

#3789B4 #374BB4 #6137B4

triadic

#374BB4 #B4374B #4BB437

tetradic

#374BB4 #B43789 #B4A037 #37B461

square

#374BB4 #B43789 #B4A037 #37B461

split-complementary

#374BB4 #B46137 #89B437

monochromatic

#1A2456 #293785 #374BB4 #5B6DCD #8A97DB

Accessibility & contrast

On white

7.43

#374BB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.83

#374BB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374BB4

7.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374BB4	#FFFFFF	#000000	##FFFFFF
##374BB4	1.00	7.43	2.83	7.43
#FFFFFF	7.43	1.00	21.00	1.00
#000000	2.83	21.00	1.00	21.00
##FFFFFF	7.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BB8

Deuteranopia (green-blind)

#0050B2

Tritanopia (blue-blind)

#006578

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #374bb4;
/* rgb */ color: rgb(55, 75, 180);
/* oklch */ color: oklch(46.1% 0.167 270.3);

Tailwind

colors: {
  custom: {
    50: '#7e7dcb',
    500: '#374bb4',
    950: '#000000',
  },
}

SCSS

$custom: #374bb4;
$custom-light: #7e7dcb;
$custom-dark: #000000;

JSON

{
  "hex": "#374bb4",
  "rgb": {
    "r": 55,
    "g": 75,
    "b": 180
  },
  "hsl": {
    "h": 230.4,
    "s": 53.191,
    "l": 46.078
  },
  "oklch": {
    "l": 0.46118,
    "c": 0.16742,
    "h": 270.3
  },
  "luminance": 0.0914
}

Semantic roles & 50–950 ramp

primary

#374BB4

secondary

#C6BB81

accent

#C54BDD

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #374BB4

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

Preview Lab → · Contrast checker → · Palette generator →