#374BA6#374BA6

#374BA6 is a dark, vivid blue. Relative luminance 0.086; OKLCH L 45.0% C 0.148 H 270.1°. Best body text is #FFFFFF at 7.72:1 contrast (WCAG AA passes).

Color values

HEX	#374BA6
RGB	rgb(55, 75, 166)
HSL	hsl(229, 50%, 43%)
HSV	hsv(229, 67%, 65%)
CMYK	cmyk(66.9%, 54.8%, 0%, 34.9%)
CIE-LAB	lab(35.20, 22.79, -51.49)
CIE-LCH	lch(35.20, 56.30, 293.87°)
OKLab	oklab(45% 0.0003 -0.148)
OKLCH	oklch(45% 0.148 270.1)
XYZ	xyz(10.9722, 8.5965, 37.1501)
Luminance	0.0860 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374BA6 #A69237

analogous

#3782A6 #374BA6 #5A37A6

triadic

#374BA6 #A6374B #4BA637

tetradic

#374BA6 #A63782 #A69237 #37A65A

square

#374BA6 #A63782 #A69237 #37A65A

split-complementary

#374BA6 #A65A37 #82A637

monochromatic

#19214A #283678 #374BA6 #5469C6 #8291D6

Accessibility & contrast

On white

7.72

#374BA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.72

#374BA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374BA6

7.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374BA6	#FFFFFF	#000000	##FFFFFF
##374BA6	1.00	7.72	2.72	7.72
#FFFFFF	7.72	1.00	21.00	1.00
#000000	2.72	21.00	1.00	21.00
##FFFFFF	7.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0658A9

Deuteranopia (green-blind)

#004EA4

Tritanopia (blue-blind)

#006171

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #374ba6;
/* rgb */ color: rgb(55, 75, 166);
/* oklch */ color: oklch(45.0% 0.148 270.1);

Tailwind

colors: {
  custom: {
    50: '#7b7dc1',
    500: '#374ba6',
    950: '#000000',
  },
}

SCSS

$custom: #374ba6;
$custom-light: #7b7dc1;
$custom-dark: #000000;

JSON

{
  "hex": "#374ba6",
  "rgb": {
    "r": 55,
    "g": 75,
    "b": 166
  },
  "hsl": {
    "h": 229.189,
    "s": 50.226,
    "l": 43.333
  },
  "oklch": {
    "l": 0.44996,
    "c": 0.14797,
    "h": 270.1
  },
  "luminance": 0.08598
}

Semantic roles & 50–950 ramp

primary

#374BA6

secondary

#BFB37A

accent

#C14EDA

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0912

muted

#7C7B81

Preview Lab

Preview with #374BA6

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

Preview Lab → · Contrast checker → · Palette generator →