#374D99#374D99

#374D99 is a dark, vivid blue. Relative luminance 0.084; OKLCH L 44.4% C 0.127 H 268.7°. Best body text is #FFFFFF at 7.82:1 contrast (WCAG AA passes).

Color values

HEX	#374D99
RGB	rgb(55, 77, 153)
HSL	hsl(227, 47%, 41%)
HSV	hsv(227, 64%, 60%)
CMYK	cmyk(64.1%, 49.7%, 0%, 40%)
CIE-LAB	lab(34.84, 16.72, -44.24)
CIE-LCH	lch(34.84, 47.30, 290.71°)
OKLab	oklab(44.44% -0.0029 -0.1266)
OKLCH	oklch(44.44% 0.127 268.7)
XYZ	xyz(9.9772, 8.4190, 31.2301)
Luminance	0.0842 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374D99 #998337

analogous

#377E99 #374D99 #523799

triadic

#374D99 #99374D #4D9937

tetradic

#374D99 #99377E #998337 #379952

square

#374D99 #99377E #998337 #379952

split-complementary

#374D99 #995237 #7E9937

monochromatic

#17203F #27366C #374D99 #4E67BF #7B8ED0

Accessibility & contrast

On white

7.82

#374D99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.68

#374D99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374D99

7.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374D99	#FFFFFF	#000000	##FFFFFF
##374D99	1.00	7.82	2.68	7.82
#FFFFFF	7.82	1.00	21.00	1.00
#000000	2.68	21.00	1.00	21.00
##FFFFFF	7.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#25579C

Deuteranopia (green-blind)

#104E97

Tritanopia (blue-blind)

#005E6B

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #374d99;
/* rgb */ color: rgb(55, 77, 153);
/* oklch */ color: oklch(44.4% 0.127 268.7);

Tailwind

colors: {
  custom: {
    50: '#787eb7',
    500: '#374d99',
    950: '#000000',
  },
}

SCSS

$custom: #374d99;
$custom-light: #787eb7;
$custom-dark: #000000;

JSON

{
  "hex": "#374d99",
  "rgb": {
    "r": 55,
    "g": 77,
    "b": 153
  },
  "hsl": {
    "h": 226.531,
    "s": 47.115,
    "l": 40.784
  },
  "oklch": {
    "l": 0.44439,
    "c": 0.12666,
    "h": 268.7
  },
  "luminance": 0.0842
}

Semantic roles & 50–950 ramp

primary

#374D99

secondary

#B9A973

accent

#B951D7

background

#F7F7FB

surface

#EEEEF6

border

#C9C9D0

text

#0A0911

muted

#7C7B80

Preview Lab

Preview with #374D99

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

Preview Lab → · Contrast checker → · Palette generator →