#374BA3#374BA3

#374BA3 is a dark, vivid blue. Relative luminance 0.085; OKLCH L 44.8% C 0.144 H 270.0°. Best body text is #FFFFFF at 7.78:1 contrast (WCAG AA passes).

Color values

HEX	#374BA3
RGB	rgb(55, 75, 163)
HSL	hsl(229, 50%, 43%)
HSV	hsv(229, 66%, 64%)
CMYK	cmyk(66.3%, 54%, 0%, 36.1%)
CIE-LAB	lab(34.98, 21.69, -50.04)
CIE-LCH	lch(34.98, 54.54, 293.44°)
OKLab	oklab(44.76% 0.0001 -0.1437)
OKLCH	oklch(44.76% 0.144 270)
XYZ	xyz(10.7002, 8.4877, 35.7176)
Luminance	0.0849 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374BA3 #A38F37

analogous

#3781A3 #374BA3 #5937A3

triadic

#374BA3 #A3374B #4BA337

tetradic

#374BA3 #A33781 #A38F37 #37A359

square

#374BA3 #A33781 #A38F37 #37A359

split-complementary

#374BA3 #A35937 #81A337

monochromatic

#182147 #283675 #374BA3 #5268C5 #8090D4

Accessibility & contrast

On white

7.78

#374BA3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.70

#374BA3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374BA3

7.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374BA3	#FFFFFF	#000000	##FFFFFF
##374BA3	1.00	7.78	2.70	7.78
#FFFFFF	7.78	1.00	21.00	1.00
#000000	2.70	21.00	1.00	21.00
##FFFFFF	7.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F57A6

Deuteranopia (green-blind)

#004EA1

Tritanopia (blue-blind)

#00606F

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #374ba3;
/* rgb */ color: rgb(55, 75, 163);
/* oklch */ color: oklch(44.8% 0.144 270.0);

Tailwind

colors: {
  custom: {
    50: '#7a7dbf',
    500: '#374ba3',
    950: '#000000',
  },
}

SCSS

$custom: #374ba3;
$custom-light: #7a7dbf;
$custom-dark: #000000;

JSON

{
  "hex": "#374ba3",
  "rgb": {
    "r": 55,
    "g": 75,
    "b": 163
  },
  "hsl": {
    "h": 228.889,
    "s": 49.541,
    "l": 42.745
  },
  "oklch": {
    "l": 0.44764,
    "c": 0.14372,
    "h": 270
  },
  "luminance": 0.08489
}

Semantic roles & 50–950 ramp

primary

#374BA3

secondary

#BEB178

accent

#BF4FD9

background

#F7F7FB

surface

#EEEEF7

border

#C9C9D0

text

#0A0912

muted

#7C7B81

Preview Lab

Preview with #374BA3

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

Preview Lab → · Contrast checker → · Palette generator →