#374399#374399

#374399 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.4% C 0.140 H 272.9°. Best body text is #FFFFFF at 8.66:1 contrast (WCAG AA passes).

Color values

HEX	#374399
RGB	rgb(55, 67, 153)
HSL	hsl(233, 47%, 41%)
HSV	hsv(233, 64%, 60%)
CMYK	cmyk(64.1%, 56.2%, 0%, 40%)
CIE-LAB	lab(32.09, 23.36, -48.68)
CIE-LCH	lch(32.09, 53.99, 295.64°)
OKLab	oklab(42.36% 0.0072 -0.1398)
OKLCH	oklch(42.36% 0.14 272.9)
XYZ	xyz(9.3306, 7.1257, 31.0145)
Luminance	0.0713 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374399 #998D37

analogous

#377499 #374399 #5C3799

triadic

#374399 #993743 #439937

tetradic

#374399 #993774 #998D37 #37995C

square

#374399 #993774 #998D37 #37995C

split-complementary

#374399 #995C37 #749937

monochromatic

#171C3F #272F6C #374399 #4E5CBF #7B85D0

Accessibility & contrast

On white

8.66

#374399 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#374399 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374399

8.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374399	#FFFFFF	#000000	##FFFFFF
##374399	1.00	8.66	2.43	8.66
#FFFFFF	8.66	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00509C

Deuteranopia (green-blind)

#004797

Tritanopia (blue-blind)

#005767

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #374399;
/* rgb */ color: rgb(55, 67, 153);
/* oklch */ color: oklch(42.4% 0.140 272.9);

Tailwind

colors: {
  custom: {
    50: '#7977b8',
    500: '#374399',
    950: '#000000',
  },
}

SCSS

$custom: #374399;
$custom-light: #7977b8;
$custom-dark: #000000;

JSON

{
  "hex": "#374399",
  "rgb": {
    "r": 55,
    "g": 67,
    "b": 153
  },
  "hsl": {
    "h": 232.653,
    "s": 47.115,
    "l": 40.784
  },
  "oklch": {
    "l": 0.42363,
    "c": 0.13999,
    "h": 272.9
  },
  "luminance": 0.07126
}

Semantic roles & 50–950 ramp

primary

#374399

secondary

#B9B073

accent

#C651D7

background

#F7F7FB

surface

#EEEDF6

border

#C9C8D0

text

#0A0811

muted

#7C7B80

Preview Lab

Preview with #374399

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

Preview Lab → · Contrast checker → · Palette generator →