#374E71#374E71

#374E71 is a dark, moderate blue. Relative luminance 0.075; OKLCH L 42.1% C 0.065 H 258.6°. Best body text is #FFFFFF at 8.43:1 contrast (WCAG AA passes).

Color values

HEX	#374E71
RGB	rgb(55, 78, 113)
HSL	hsl(216, 35%, 33%)
HSV	hsv(216, 51%, 44%)
CMYK	cmyk(51.3%, 31%, 0%, 55.7%)
CIE-LAB	lab(32.82, 1.92, -22.84)
CIE-LCH	lch(32.82, 22.92, 274.81°)
OKLab	oklab(42.12% -0.0129 -0.064)
OKLCH	oklch(42.12% 0.065 258.6)
XYZ	xyz(7.2796, 7.4528, 16.6745)
Luminance	0.0745 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374E71 #715A37

analogous

#376B71 #374E71 #3D3771

triadic

#374E71 #71374E #4E7137

tetradic

#374E71 #71376B #715A37 #37713D

square

#374E71 #71376B #715A37 #37713D

split-complementary

#374E71 #713D37 #6B7137

monochromatic

#0F151F #233248 #374E71 #4B6A9A #6B89B7

Accessibility & contrast

On white

8.43

#374E71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#374E71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374E71

8.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374E71	#FFFFFF	#000000	##FFFFFF
##374E71	1.00	8.43	2.49	8.43
#FFFFFF	8.43	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#415073

Deuteranopia (green-blind)

#3A4B70

Tritanopia (blue-blind)

#1D565A

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #374e71;
/* rgb */ color: rgb(55, 78, 113);
/* oklch */ color: oklch(42.1% 0.065 258.6);

Tailwind

colors: {
  custom: {
    50: '#717f9a',
    500: '#374e71',
    950: '#000000',
  },
}

SCSS

$custom: #374e71;
$custom-light: #717f9a;
$custom-dark: #000000;

JSON

{
  "hex": "#374e71",
  "rgb": {
    "r": 55,
    "g": 78,
    "b": 113
  },
  "hsl": {
    "h": 216.207,
    "s": 34.524,
    "l": 32.941
  },
  "oklch": {
    "l": 0.42124,
    "c": 0.06534,
    "h": 258.6
  },
  "luminance": 0.07453
}

Semantic roles & 50–950 ramp

primary

#374E71

secondary

#A08864

accent

#9F5DCB

background

#F7F7F9

surface

#EDEEF2

border

#C8C9CC

text

#080A0E

muted

#7B7C7E

Preview Lab

Preview with #374E71

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

Preview Lab → · Contrast checker → · Palette generator →