#374F8A#374F8A

#374F8A is a dark, moderate blue. Relative luminance 0.082; OKLCH L 43.9% C 0.102 H 265.7°. Best body text is #FFFFFF at 7.93:1 contrast (WCAG AA passes).

Color values

HEX	#374F8A
RGB	rgb(55, 79, 138)
HSL	hsl(223, 43%, 38%)
HSV	hsv(223, 60%, 54%)
CMYK	cmyk(60.1%, 42.8%, 0%, 45.9%)
CIE-LAB	lab(34.47, 9.97, -35.70)
CIE-LCH	lch(34.47, 37.07, 285.61°)
OKLab	oklab(43.85% -0.0076 -0.1015)
OKLCH	oklch(43.85% 0.102 265.7)
XYZ	xyz(8.9574, 8.2384, 25.1580)
Luminance	0.0824 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374F8A #8A7237

analogous

#37788A #374F8A #49378A

triadic

#374F8A #8A374F #4F8A37

tetradic

#374F8A #8A3778 #8A7237 #378A49

square

#374F8A #8A3778 #8A7237 #378A49

split-complementary

#374F8A #8A4937 #788A37

monochromatic

#141D32 #26365E #374F8A #4868B6 #748CC8

Accessibility & contrast

On white

7.93

#374F8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.65

#374F8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374F8A

7.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374F8A	#FFFFFF	#000000	##FFFFFF
##374F8A	1.00	7.93	2.65	7.93
#FFFFFF	7.93	1.00	21.00	1.00
#000000	2.65	21.00	1.00	21.00
##FFFFFF	7.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#35558C

Deuteranopia (green-blind)

#2A4E89

Tritanopia (blue-blind)

#005C65

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #374f8a;
/* rgb */ color: rgb(55, 79, 138);
/* oklch */ color: oklch(43.9% 0.102 265.7);

Tailwind

colors: {
  custom: {
    50: '#7580ac',
    500: '#374f8a',
    950: '#000000',
  },
}

SCSS

$custom: #374f8a;
$custom-light: #7580ac;
$custom-dark: #000000;

JSON

{
  "hex": "#374f8a",
  "rgb": {
    "r": 55,
    "g": 79,
    "b": 138
  },
  "hsl": {
    "h": 222.651,
    "s": 43.005,
    "l": 37.843
  },
  "oklch": {
    "l": 0.43854,
    "c": 0.1018,
    "h": 265.7
  },
  "luminance": 0.08239
}

Semantic roles & 50–950 ramp

primary

#374F8A

secondary

#B09D6D

accent

#AE55D3

background

#F7F7FA

surface

#EDEEF4

border

#C8C9CE

text

#090A10

muted

#7B7C7F

Preview Lab

Preview with #374F8A

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

Preview Lab → · Contrast checker → · Palette generator →