#374EB3#374EB3

#374EB3 is a mid, vivid blue. Relative luminance 0.095; OKLCH L 46.6% C 0.162 H 269.4°. Best body text is #FFFFFF at 7.23:1 contrast (WCAG AA passes).

Color values

HEX	#374EB3
RGB	rgb(55, 78, 179)
HSL	hsl(229, 53%, 46%)
HSV	hsv(229, 69%, 70%)
CMYK	cmyk(69.3%, 56.4%, 0%, 29.8%)
CIE-LAB	lab(36.96, 25.56, -56.36)
CIE-LCH	lch(36.96, 61.88, 294.39°)
OKLab	oklab(46.62% -0.0017 -0.1623)
OKLCH	oklch(46.62% 0.162 269.4)
XYZ	xyz(12.4338, 9.5145, 43.8203)
Luminance	0.0952 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374EB3 #B39C37

analogous

#378CB3 #374EB3 #5E37B3

triadic

#374EB3 #B3374E #4EB337

tetradic

#374EB3 #B3378C #B39C37 #37B35E

square

#374EB3 #B3378C #B39C37 #37B35E

split-complementary

#374EB3 #B35E37 #8CB337

monochromatic

#1A2555 #293A84 #374EB3 #5B70CD #8A99DB

Accessibility & contrast

On white

7.23

#374EB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.90

#374EB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374EB3

7.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374EB3	#FFFFFF	#000000	##FFFFFF
##374EB3	1.00	7.23	2.90	7.23
#FFFFFF	7.23	1.00	21.00	1.00
#000000	2.90	21.00	1.00	21.00
##FFFFFF	7.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DB6

Deuteranopia (green-blind)

#0051B1

Tritanopia (blue-blind)

#006779

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #374eb3;
/* rgb */ color: rgb(55, 78, 179);
/* oklch */ color: oklch(46.6% 0.162 269.4);

Tailwind

colors: {
  custom: {
    50: '#7d7fca',
    500: '#374eb3',
    950: '#000000',
  },
}

SCSS

$custom: #374eb3;
$custom-light: #7d7fca;
$custom-dark: #000000;

JSON

{
  "hex": "#374eb3",
  "rgb": {
    "r": 55,
    "g": 78,
    "b": 179
  },
  "hsl": {
    "h": 228.871,
    "s": 52.991,
    "l": 45.882
  },
  "oklch": {
    "l": 0.46622,
    "c": 0.16227,
    "h": 269.4
  },
  "luminance": 0.09516
}

Semantic roles & 50–950 ramp

primary

#374EB3

secondary

#C5B881

accent

#C24BDC

background

#F8F7FC

surface

#EFEEF8

border

#CAC9D1

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #374EB3

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

Preview Lab → · Contrast checker → · Palette generator →