#374F8D#374F8D

#374F8D is a dark, moderate blue. Relative luminance 0.083; OKLCH L 44.0% C 0.106 H 266.2°. Best body text is #FFFFFF at 7.88:1 contrast (WCAG AA passes).

Color values

HEX	#374F8D
RGB	rgb(55, 79, 141)
HSL	hsl(223, 44%, 38%)
HSV	hsv(223, 61%, 55%)
CMYK	cmyk(61%, 44%, 0%, 44.7%)
CIE-LAB	lab(34.65, 11.05, -37.25)
CIE-LCH	lch(34.65, 38.85, 286.52°)
OKLab	oklab(44.05% -0.007 -0.1061)
OKLCH	oklch(44.05% 0.106 266.2)
XYZ	xyz(9.1776, 8.3265, 26.3177)
Luminance	0.0833 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374F8D #8D7537

analogous

#377A8D #374F8D #4A378D

triadic

#374F8D #8D374F #4F8D37

tetradic

#374F8D #8D377A #8D7537 #378D4A

square

#374F8D #8D377A #8D7537 #378D4A

split-complementary

#374F8D #8D4A37 #7A8D37

monochromatic

#151E35 #263661 #374F8D #4968B8 #758DC9

Accessibility & contrast

On white

7.88

#374F8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#374F8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374F8D

7.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374F8D	#FFFFFF	#000000	##FFFFFF
##374F8D	1.00	7.88	2.67	7.88
#FFFFFF	7.88	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#33568F

Deuteranopia (green-blind)

#274E8C

Tritanopia (blue-blind)

#005D67

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #374f8d;
/* rgb */ color: rgb(55, 79, 141);
/* oklch */ color: oklch(44.0% 0.106 266.2);

Tailwind

colors: {
  custom: {
    50: '#7680af',
    500: '#374f8d',
    950: '#000000',
  },
}

SCSS

$custom: #374f8d;
$custom-light: #7680af;
$custom-dark: #000000;

JSON

{
  "hex": "#374f8d",
  "rgb": {
    "r": 55,
    "g": 79,
    "b": 141
  },
  "hsl": {
    "h": 223.256,
    "s": 43.878,
    "l": 38.431
  },
  "oklch": {
    "l": 0.4405,
    "c": 0.10629,
    "h": 266.2
  },
  "luminance": 0.08327
}

Semantic roles & 50–950 ramp

primary

#374F8D

secondary

#B29F6E

accent

#B054D4

background

#F7F7FA

surface

#EDEEF4

border

#C8C9CE

text

#090A10

muted

#7B7C7F

Preview Lab

Preview with #374F8D

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

Preview Lab → · Contrast checker → · Palette generator →