#374CBB#374CBB

#374CBB is a mid, vivid blue. Relative luminance 0.096; OKLCH L 46.9% C 0.176 H 270.0°. Best body text is #FFFFFF at 7.21:1 contrast (WCAG AA passes).

Color values

HEX	#374CBB
RGB	rgb(55, 76, 187)
HSL	hsl(230, 55%, 47%)
HSV	hsv(230, 71%, 73%)
CMYK	cmyk(70.6%, 59.4%, 0%, 26.7%)
CIE-LAB	lab(37.06, 29.76, -60.91)
CIE-LCH	lch(37.06, 67.79, 296.04°)
OKLab	oklab(46.89% 0.0001 -0.1757)
OKLCH	oklch(46.89% 0.176 270)
XYZ	xyz(13.1266, 9.5677, 48.1590)
Luminance	0.0957 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374CBB #BBA637

analogous

#378EBB #374CBB #6437BB

triadic

#374CBB #BB374C #4CBB37

tetradic

#374CBB #BB378E #BBA637 #37BB64

square

#374CBB #BB378E #BBA637 #37BB64

split-complementary

#374CBB #BB6437 #8EBB37

monochromatic

#1B265C #29398C #374CBB #5F71D0 #8E9BDE

Accessibility & contrast

On white

7.21

#374CBB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.91

#374CBB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374CBB

7.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374CBB	#FFFFFF	#000000	##FFFFFF
##374CBB	1.00	7.21	2.91	7.21
#FFFFFF	7.21	1.00	21.00	1.00
#000000	2.91	21.00	1.00	21.00
##FFFFFF	7.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DBF

Deuteranopia (green-blind)

#0051B9

Tritanopia (blue-blind)

#00687C

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #374cbb;
/* rgb */ color: rgb(55, 76, 187);
/* oklch */ color: oklch(46.9% 0.176 270.0);

Tailwind

colors: {
  custom: {
    50: '#7f7dd0',
    500: '#374cbb',
    950: '#000000',
  },
}

SCSS

$custom: #374cbb;
$custom-light: #7f7dd0;
$custom-dark: #000000;

JSON

{
  "hex": "#374cbb",
  "rgb": {
    "r": 55,
    "g": 76,
    "b": 187
  },
  "hsl": {
    "h": 230.455,
    "s": 54.545,
    "l": 47.451
  },
  "oklch": {
    "l": 0.46889,
    "c": 0.17566,
    "h": 270
  },
  "luminance": 0.09569
}

Semantic roles & 50–950 ramp

primary

#374CBB

secondary

#C9BE85

accent

#C64ADE

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0B0914

muted

#7C7B82

Preview Lab

Preview with #374CBB

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

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