#374A9F#374A9F

#374A9F is a dark, vivid blue. Relative luminance 0.082; OKLCH L 44.3% C 0.139 H 270.3°. Best body text is #FFFFFF at 7.95:1 contrast (WCAG AA passes).

Color values

HEX	#374A9F
RGB	rgb(55, 74, 159)
HSL	hsl(229, 49%, 42%)
HSV	hsv(229, 65%, 62%)
CMYK	cmyk(65.4%, 53.5%, 0%, 37.6%)
CIE-LAB	lab(34.42, 20.90, -48.54)
CIE-LCH	lch(34.42, 52.84, 293.29°)
OKLab	oklab(44.25% 0.0007 -0.1393)
OKLCH	oklch(44.25% 0.139 270.3)
XYZ	xyz(10.2802, 8.2121, 33.8375)
Luminance	0.0821 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374A9F #9F8C37

analogous

#377E9F #374A9F #58379F

triadic

#374A9F #9F374A #4A9F37

tetradic

#374A9F #9F377E #9F8C37 #379F58

square

#374A9F #9F377E #9F8C37 #379F58

split-complementary

#374A9F #9F5837 #7E9F37

monochromatic

#182044 #273572 #374A9F #5165C3 #7E8DD2

Accessibility & contrast

On white

7.95

#374A9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.64

#374A9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374A9F

7.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374A9F	#FFFFFF	#000000	##FFFFFF
##374A9F	1.00	7.95	2.64	7.95
#FFFFFF	7.95	1.00	21.00	1.00
#000000	2.64	21.00	1.00	21.00
##FFFFFF	7.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1456A2

Deuteranopia (green-blind)

#004C9D

Tritanopia (blue-blind)

#005E6D

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #374a9f;
/* rgb */ color: rgb(55, 74, 159);
/* oklch */ color: oklch(44.3% 0.139 270.3);

Tailwind

colors: {
  custom: {
    50: '#797cbc',
    500: '#374a9f',
    950: '#000000',
  },
}

SCSS

$custom: #374a9f;
$custom-light: #797cbc;
$custom-dark: #000000;

JSON

{
  "hex": "#374a9f",
  "rgb": {
    "r": 55,
    "g": 74,
    "b": 159
  },
  "hsl": {
    "h": 229.038,
    "s": 48.598,
    "l": 41.961
  },
  "oklch": {
    "l": 0.44252,
    "c": 0.13931,
    "h": 270.3
  },
  "luminance": 0.08213
}

Semantic roles & 50–950 ramp

primary

#374A9F

secondary

#BCAF76

accent

#BF50D8

background

#F7F7FB

surface

#EEEEF6

border

#C9C9D0

text

#0A0912

muted

#7C7B81

Preview Lab

Preview with #374A9F

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

Preview Lab → · Contrast checker → · Palette generator →