#374A8A#374A8A

#374A8A is a dark, moderate blue. Relative luminance 0.075; OKLCH L 42.7% C 0.108 H 269.0°. Best body text is #FFFFFF at 8.37:1 contrast (WCAG AA passes).

Color values

HEX	#374A8A
RGB	rgb(55, 74, 138)
HSL	hsl(226, 43%, 38%)
HSV	hsv(226, 60%, 54%)
CMYK	cmyk(60.1%, 46.4%, 0%, 45.9%)
CIE-LAB	lab(33.01, 13.29, -38.03)
CIE-LCH	lch(33.01, 40.28, 289.26°)
OKLab	oklab(42.73% -0.0019 -0.1084)
OKLCH	oklch(42.73% 0.108 269)
XYZ	xyz(8.6102, 7.5441, 25.0422)
Luminance	0.0755 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374A8A #8A7737

analogous

#37738A #374A8A #4D378A

triadic

#374A8A #8A374A #4A8A37

tetradic

#374A8A #8A3773 #8A7737 #378A4D

square

#374A8A #8A3773 #8A7737 #378A4D

split-complementary

#374A8A #8A4D37 #738A37

monochromatic

#141B32 #26335E #374A8A #4861B6 #7487C8

Accessibility & contrast

On white

8.37

#374A8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#374A8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374A8A

8.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374A8A	#FFFFFF	#000000	##FFFFFF
##374A8A	1.00	8.37	2.51	8.37
#FFFFFF	8.37	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D528C

Deuteranopia (green-blind)

#214A89

Tritanopia (blue-blind)

#005863

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #374a8a;
/* rgb */ color: rgb(55, 74, 138);
/* oklch */ color: oklch(42.7% 0.108 269.0);

Tailwind

colors: {
  custom: {
    50: '#757cac',
    500: '#374a8a',
    950: '#000000',
  },
}

SCSS

$custom: #374a8a;
$custom-light: #757cac;
$custom-dark: #000000;

JSON

{
  "hex": "#374a8a",
  "rgb": {
    "r": 55,
    "g": 74,
    "b": 138
  },
  "hsl": {
    "h": 226.265,
    "s": 43.005,
    "l": 37.843
  },
  "oklch": {
    "l": 0.42734,
    "c": 0.10843,
    "h": 269
  },
  "luminance": 0.07545
}

Semantic roles & 50–950 ramp

primary

#374A8A

secondary

#B0A16D

accent

#B655D3

background

#F7F7FA

surface

#EDEEF4

border

#C8C9CE

text

#090910

muted

#7B7B7F

Preview Lab

Preview with #374A8A

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

Preview Lab → · Contrast checker → · Palette generator →