#374CB9#374CB9

#374CB9 is a mid, vivid blue. Relative luminance 0.095; OKLCH L 46.7% C 0.173 H 270.0°. Best body text is #FFFFFF at 7.25:1 contrast (WCAG AA passes).

Color values

HEX	#374CB9
RGB	rgb(55, 76, 185)
HSL	hsl(230, 54%, 47%)
HSV	hsv(230, 70%, 73%)
CMYK	cmyk(70.3%, 58.9%, 0%, 27.5%)
CIE-LAB	lab(36.90, 29.04, -59.99)
CIE-LCH	lch(36.90, 66.65, 295.83°)
OKLab	oklab(46.72% 0.0001 -0.173)
OKLCH	oklch(46.72% 0.173 270)
XYZ	xyz(12.9140, 9.4826, 47.0393)
Luminance	0.0948 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374CB9 #B9A437

analogous

#378DB9 #374CB9 #6337B9

triadic

#374CB9 #B9374C #4CB937

tetradic

#374CB9 #B9378D #B9A437 #37B963

square

#374CB9 #B9378D #B9A437 #37B963

split-complementary

#374CB9 #B96337 #8DB937

monochromatic

#1B255B #29398A #374CB9 #5E70CF #8D9ADD

Accessibility & contrast

On white

7.25

#374CB9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.90

#374CB9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374CB9

7.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374CB9	#FFFFFF	#000000	##FFFFFF
##374CB9	1.00	7.25	2.90	7.25
#FFFFFF	7.25	1.00	21.00	1.00
#000000	2.90	21.00	1.00	21.00
##FFFFFF	7.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DBD

Deuteranopia (green-blind)

#0051B7

Tritanopia (blue-blind)

#00677B

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #374cb9;
/* rgb */ color: rgb(55, 76, 185);
/* oklch */ color: oklch(46.7% 0.173 270.0);

Tailwind

colors: {
  custom: {
    50: '#7f7dcf',
    500: '#374cb9',
    950: '#000000',
  },
}

SCSS

$custom: #374cb9;
$custom-light: #7f7dcf;
$custom-dark: #000000;

JSON

{
  "hex": "#374cb9",
  "rgb": {
    "r": 55,
    "g": 76,
    "b": 185
  },
  "hsl": {
    "h": 230.308,
    "s": 54.167,
    "l": 47.059
  },
  "oklch": {
    "l": 0.46723,
    "c": 0.17297,
    "h": 270
  },
  "luminance": 0.09484
}

Semantic roles & 50–950 ramp

primary

#374CB9

secondary

#C8BD84

accent

#C64ADE

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0914

muted

#7C7B82

Preview Lab

Preview with #374CB9

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

Preview Lab → · Contrast checker → · Palette generator →