#374C8A#374C8A

#374C8A is a dark, moderate blue. Relative luminance 0.078; OKLCH L 43.2% C 0.106 H 267.8°. Best body text is #FFFFFF at 8.19:1 contrast (WCAG AA passes).

Color values

HEX	#374C8A
RGB	rgb(55, 76, 138)
HSL	hsl(225, 43%, 38%)
HSV	hsv(225, 60%, 54%)
CMYK	cmyk(60.1%, 44.9%, 0%, 45.9%)
CIE-LAB	lab(33.60, 11.96, -37.10)
CIE-LCH	lch(33.60, 38.98, 287.86°)
OKLab	oklab(43.18% -0.0041 -0.1057)
OKLCH	oklch(43.18% 0.106 267.8)
XYZ	xyz(8.7459, 7.8154, 25.0875)
Luminance	0.0782 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374C8A #8A7537

analogous

#37758A #374C8A #4B378A

triadic

#374C8A #8A374C #4C8A37

tetradic

#374C8A #8A3775 #8A7537 #378A4B

square

#374C8A #8A3775 #8A7537 #378A4B

split-complementary

#374C8A #8A4B37 #758A37

monochromatic

#141C32 #26345E #374C8A #4864B6 #7489C8

Accessibility & contrast

On white

8.19

#374C8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#374C8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374C8A

8.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374C8A	#FFFFFF	#000000	##FFFFFF
##374C8A	1.00	8.19	2.56	8.19
#FFFFFF	8.19	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#30538C

Deuteranopia (green-blind)

#254C89

Tritanopia (blue-blind)

#005A64

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #374c8a;
/* rgb */ color: rgb(55, 76, 138);
/* oklch */ color: oklch(43.2% 0.106 267.8);

Tailwind

colors: {
  custom: {
    50: '#757dac',
    500: '#374c8a',
    950: '#000000',
  },
}

SCSS

$custom: #374c8a;
$custom-light: #757dac;
$custom-dark: #000000;

JSON

{
  "hex": "#374c8a",
  "rgb": {
    "r": 55,
    "g": 76,
    "b": 138
  },
  "hsl": {
    "h": 224.819,
    "s": 43.005,
    "l": 37.843
  },
  "oklch": {
    "l": 0.43178,
    "c": 0.10574,
    "h": 267.8
  },
  "luminance": 0.07816
}

Semantic roles & 50–950 ramp

primary

#374C8A

secondary

#B09F6D

accent

#B355D3

background

#F7F7FA

surface

#EDEEF4

border

#C8C9CE

text

#090910

muted

#7B7B7F

Preview Lab

Preview with #374C8A

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

Preview Lab → · Contrast checker → · Palette generator →