#374BB3#374BB3

#374BB3 is a mid, vivid blue. Relative luminance 0.091; OKLCH L 46.0% C 0.166 H 270.3°. Best body text is #FFFFFF at 7.45:1 contrast (WCAG AA passes).

Color values

HEX	#374BB3
RGB	rgb(55, 75, 179)
HSL	hsl(230, 53%, 46%)
HSV	hsv(230, 69%, 70%)
CMYK	cmyk(69.3%, 58.1%, 0%, 29.8%)
CIE-LAB	lab(36.17, 27.51, -57.63)
CIE-LCH	lch(36.17, 63.86, 295.52°)
OKLab	oklab(46.04% 0.0008 -0.166)
OKLCH	oklch(46.04% 0.166 270.3)
XYZ	xyz(12.2255, 9.0979, 43.7509)
Luminance	0.0910 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374BB3 #B39F37

analogous

#3789B3 #374BB3 #6137B3

triadic

#374BB3 #B3374B #4BB337

tetradic

#374BB3 #B33789 #B39F37 #37B361

square

#374BB3 #B33789 #B39F37 #37B361

split-complementary

#374BB3 #B36137 #89B337

monochromatic

#1A2455 #293784 #374BB3 #5B6DCD #8A97DB

Accessibility & contrast

On white

7.45

#374BB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.82

#374BB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374BB3

7.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374BB3	#FFFFFF	#000000	##FFFFFF
##374BB3	1.00	7.45	2.82	7.45
#FFFFFF	7.45	1.00	21.00	1.00
#000000	2.82	21.00	1.00	21.00
##FFFFFF	7.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BB7

Deuteranopia (green-blind)

#0050B1

Tritanopia (blue-blind)

#006577

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #374bb3;
/* rgb */ color: rgb(55, 75, 179);
/* oklch */ color: oklch(46.0% 0.166 270.3);

Tailwind

colors: {
  custom: {
    50: '#7d7dcb',
    500: '#374bb3',
    950: '#000000',
  },
}

SCSS

$custom: #374bb3;
$custom-light: #7d7dcb;
$custom-dark: #000000;

JSON

{
  "hex": "#374bb3",
  "rgb": {
    "r": 55,
    "g": 75,
    "b": 179
  },
  "hsl": {
    "h": 230.323,
    "s": 52.991,
    "l": 45.882
  },
  "oklch": {
    "l": 0.46035,
    "c": 0.16605,
    "h": 270.3
  },
  "luminance": 0.09099
}

Semantic roles & 50–950 ramp

primary

#374BB3

secondary

#C5BA81

accent

#C54BDC

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #374BB3

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

Preview Lab → · Contrast checker → · Palette generator →