#374A9C#374A9C

#374A9C is a dark, vivid blue. Relative luminance 0.081; OKLCH L 44.0% C 0.135 H 270.2°. Best body text is #FFFFFF at 8.01:1 contrast (WCAG AA passes).

Color values

HEX	#374A9C
RGB	rgb(55, 74, 156)
HSL	hsl(229, 48%, 41%)
HSV	hsv(229, 65%, 61%)
CMYK	cmyk(64.7%, 52.6%, 0%, 38.8%)
CIE-LAB	lab(34.21, 19.80, -47.07)
CIE-LCH	lch(34.21, 51.07, 292.82°)
OKLab	oklab(44.03% 0.0005 -0.135)
OKLCH	oklch(44.03% 0.135 270.2)
XYZ	xyz(10.0231, 8.1092, 32.4831)
Luminance	0.0811 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374A9C #9C8937

analogous

#377D9C #374A9C #57379C

triadic

#374A9C #9C374A #4A9C37

tetradic

#374A9C #9C377D #9C8937 #379C57

square

#374A9C #9C377D #9C8937 #379C57

split-complementary

#374A9C #9C5737 #7D9C37

monochromatic

#171F42 #27356F #374A9C #4F65C1 #7C8CD1

Accessibility & contrast

On white

8.01

#374A9C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.62

#374A9C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374A9C

8.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374A9C	#FFFFFF	#000000	##FFFFFF
##374A9C	1.00	8.01	2.62	8.01
#FFFFFF	8.01	1.00	21.00	1.00
#000000	2.62	21.00	1.00	21.00
##FFFFFF	8.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#19559F

Deuteranopia (green-blind)

#004C9A

Tritanopia (blue-blind)

#005D6C

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #374a9c;
/* rgb */ color: rgb(55, 74, 156);
/* oklch */ color: oklch(44.0% 0.135 270.2);

Tailwind

colors: {
  custom: {
    50: '#797cba',
    500: '#374a9c',
    950: '#000000',
  },
}

SCSS

$custom: #374a9c;
$custom-light: #797cba;
$custom-dark: #000000;

JSON

{
  "hex": "#374a9c",
  "rgb": {
    "r": 55,
    "g": 74,
    "b": 156
  },
  "hsl": {
    "h": 228.713,
    "s": 47.867,
    "l": 41.373
  },
  "oklch": {
    "l": 0.44025,
    "c": 0.13499,
    "h": 270.2
  },
  "luminance": 0.0811
}

Semantic roles & 50–950 ramp

primary

#374A9C

secondary

#BAAD75

accent

#BE50D7

background

#F7F7FB

surface

#EEEEF6

border

#C9C9D0

text

#0A0912

muted

#7C7B81

Preview Lab

Preview with #374A9C

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

Preview Lab → · Contrast checker → · Palette generator →