#374F71#374F71

#374F71 is a dark, moderate blue. Relative luminance 0.076; OKLCH L 42.4% C 0.064 H 257.1°. Best body text is #FFFFFF at 8.34:1 contrast (WCAG AA passes).

Color values

HEX	#374F71
RGB	rgb(55, 79, 113)
HSL	hsl(215, 35%, 33%)
HSV	hsv(215, 51%, 44%)
CMYK	cmyk(51.3%, 30.1%, 0%, 55.7%)
CIE-LAB	lab(33.13, 1.28, -22.35)
CIE-LCH	lch(33.13, 22.39, 273.27°)
OKLab	oklab(42.37% -0.0143 -0.0626)
OKLCH	oklch(42.37% 0.064 257.1)
XYZ	xyz(7.3512, 7.5959, 16.6984)
Luminance	0.0760 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374F71 #715937

analogous

#376C71 #374F71 #3C3771

triadic

#374F71 #71374F #4F7137

tetradic

#374F71 #71376C #715937 #37713C

square

#374F71 #71376C #715937 #37713C

split-complementary

#374F71 #713C37 #6C7137

monochromatic

#0F151F #233248 #374F71 #4B6C9A #6B8BB7

Accessibility & contrast

On white

8.34

#374F71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.52

#374F71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374F71

8.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374F71	#FFFFFF	#000000	##FFFFFF
##374F71	1.00	8.34	2.52	8.34
#FFFFFF	8.34	1.00	21.00	1.00
#000000	2.52	21.00	1.00	21.00
##FFFFFF	8.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#425172

Deuteranopia (green-blind)

#3B4B70

Tritanopia (blue-blind)

#1D565B

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #374f71;
/* rgb */ color: rgb(55, 79, 113);
/* oklch */ color: oklch(42.4% 0.064 257.1);

Tailwind

colors: {
  custom: {
    50: '#71809a',
    500: '#374f71',
    950: '#000000',
  },
}

SCSS

$custom: #374f71;
$custom-light: #71809a;
$custom-dark: #000000;

JSON

{
  "hex": "#374f71",
  "rgb": {
    "r": 55,
    "g": 79,
    "b": 113
  },
  "hsl": {
    "h": 215.172,
    "s": 34.524,
    "l": 32.941
  },
  "oklch": {
    "l": 0.42367,
    "c": 0.06424,
    "h": 257.1
  },
  "luminance": 0.07596
}

Semantic roles & 50–950 ramp

primary

#374F71

secondary

#A08764

accent

#9D5DCB

background

#F7F7F9

surface

#EDEEF2

border

#C8C9CC

text

#080A0E

muted

#7B7C7E

Preview Lab

Preview with #374F71

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

Preview Lab → · Contrast checker → · Palette generator →