#374B9D#374B9D

#374B9D is a dark, vivid blue. Relative luminance 0.083; OKLCH L 44.3% C 0.135 H 269.8°. Best body text is #FFFFFF at 7.91:1 contrast (WCAG AA passes).

Color values

HEX	#374B9D
RGB	rgb(55, 75, 157)
HSL	hsl(228, 48%, 42%)
HSV	hsv(228, 65%, 62%)
CMYK	cmyk(65%, 52.2%, 0%, 38.4%)
CIE-LAB	lab(34.55, 19.51, -47.12)
CIE-LCH	lch(34.55, 50.99, 292.49°)
OKLab	oklab(44.31% -0.0004 -0.1351)
OKLCH	oklch(44.31% 0.135 269.8)
XYZ	xyz(10.1754, 8.2778, 32.9533)
Luminance	0.0828 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374B9D #9D8937

analogous

#377E9D #374B9D #56379D

triadic

#374B9D #9D374B #4B9D37

tetradic

#374B9D #9D377E #9D8937 #379D56

square

#374B9D #9D377E #9D8937 #379D56

split-complementary

#374B9D #9D5637 #7E9D37

monochromatic

#172042 #273570 #374B9D #5066C2 #7D8ED1

Accessibility & contrast

On white

7.91

#374B9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#374B9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374B9D

7.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374B9D	#FFFFFF	#000000	##FFFFFF
##374B9D	1.00	7.91	2.66	7.91
#FFFFFF	7.91	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B56A0

Deuteranopia (green-blind)

#004D9B

Tritanopia (blue-blind)

#005E6C

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #374b9d;
/* rgb */ color: rgb(55, 75, 157);
/* oklch */ color: oklch(44.3% 0.135 269.8);

Tailwind

colors: {
  custom: {
    50: '#797cba',
    500: '#374b9d',
    950: '#000000',
  },
}

SCSS

$custom: #374b9d;
$custom-light: #797cba;
$custom-dark: #000000;

JSON

{
  "hex": "#374b9d",
  "rgb": {
    "r": 55,
    "g": 75,
    "b": 157
  },
  "hsl": {
    "h": 228.235,
    "s": 48.113,
    "l": 41.569
  },
  "oklch": {
    "l": 0.44309,
    "c": 0.13511,
    "h": 269.8
  },
  "luminance": 0.08279
}

Semantic roles & 50–950 ramp

primary

#374B9D

secondary

#BBAD75

accent

#BD50D8

background

#F7F7FB

surface

#EEEEF6

border

#C9C9D0

text

#0A0912

muted

#7C7B81

Preview Lab

Preview with #374B9D

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

Preview Lab → · Contrast checker → · Palette generator →