#374CA3#374CA3

#374CA3 is a dark, vivid blue. Relative luminance 0.086; OKLCH L 45.0% C 0.142 H 269.6°. Best body text is #FFFFFF at 7.71:1 contrast (WCAG AA passes).

Color values

HEX	#374CA3
RGB	rgb(55, 76, 163)
HSL	hsl(228, 50%, 43%)
HSV	hsv(228, 66%, 64%)
CMYK	cmyk(66.3%, 53.4%, 0%, 36.1%)
CIE-LAB	lab(35.25, 21.03, -49.60)
CIE-LCH	lch(35.25, 53.87, 292.98°)
OKLab	oklab(44.97% -0.0009 -0.1424)
OKLCH	oklch(44.97% 0.142 269.6)
XYZ	xyz(10.7686, 8.6245, 35.7404)
Luminance	0.0862 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374CA3 #A38E37

analogous

#3782A3 #374CA3 #5837A3

triadic

#374CA3 #A3374C #4CA337

tetradic

#374CA3 #A33782 #A38E37 #37A358

square

#374CA3 #A33782 #A38E37 #37A358

split-complementary

#374CA3 #A35837 #82A337

monochromatic

#182147 #283775 #374CA3 #5269C5 #8091D4

Accessibility & contrast

On white

7.71

#374CA3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.72

#374CA3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374CA3

7.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374CA3	#FFFFFF	#000000	##FFFFFF
##374CA3	1.00	7.71	2.72	7.71
#FFFFFF	7.71	1.00	21.00	1.00
#000000	2.72	21.00	1.00	21.00
##FFFFFF	7.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1458A6

Deuteranopia (green-blind)

#004EA1

Tritanopia (blue-blind)

#006170

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #374ca3;
/* rgb */ color: rgb(55, 76, 163);
/* oklch */ color: oklch(45.0% 0.142 269.6);

Tailwind

colors: {
  custom: {
    50: '#7a7dbf',
    500: '#374ca3',
    950: '#000000',
  },
}

SCSS

$custom: #374ca3;
$custom-light: #7a7dbf;
$custom-dark: #000000;

JSON

{
  "hex": "#374ca3",
  "rgb": {
    "r": 55,
    "g": 76,
    "b": 163
  },
  "hsl": {
    "h": 228.333,
    "s": 49.541,
    "l": 42.745
  },
  "oklch": {
    "l": 0.44969,
    "c": 0.14241,
    "h": 269.6
  },
  "luminance": 0.08625
}

Semantic roles & 50–950 ramp

primary

#374CA3

secondary

#BEB078

accent

#BE4FD9

background

#F7F7FB

surface

#EEEEF7

border

#C9C9D0

text

#0A0912

muted

#7C7B81

Preview Lab

Preview with #374CA3

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

Preview Lab → · Contrast checker → · Palette generator →