#374FA3#374FA3

#374FA3 is a mid, vivid blue. Relative luminance 0.090; OKLCH L 45.6% C 0.139 H 268.4°. Best body text is #FFFFFF at 7.47:1 contrast (WCAG AA passes).

Color values

HEX	#374FA3
RGB	rgb(55, 79, 163)
HSL	hsl(227, 50%, 43%)
HSV	hsv(227, 66%, 64%)
CMYK	cmyk(66.3%, 51.5%, 0%, 36.1%)
CIE-LAB	lab(36.08, 19.05, -48.27)
CIE-LCH	lch(36.08, 51.89, 291.54°)
OKLab	oklab(45.59% -0.0038 -0.1384)
OKLCH	oklch(45.59% 0.139 268.4)
XYZ	xyz(10.9801, 9.0475, 35.8109)
Luminance	0.0905 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374FA3 #A38B37

analogous

#3785A3 #374FA3 #5537A3

triadic

#374FA3 #A3374F #4FA337

tetradic

#374FA3 #A33785 #A38B37 #37A355

square

#374FA3 #A33785 #A38B37 #37A355

split-complementary

#374FA3 #A35537 #85A337

monochromatic

#182347 #283975 #374FA3 #526CC5 #8093D4

Accessibility & contrast

On white

7.47

#374FA3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.81

#374FA3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374FA3

7.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374FA3	#FFFFFF	#000000	##FFFFFF
##374FA3	1.00	7.47	2.81	7.47
#FFFFFF	7.47	1.00	21.00	1.00
#000000	2.81	21.00	1.00	21.00
##FFFFFF	7.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E5AA6

Deuteranopia (green-blind)

#0050A1

Tritanopia (blue-blind)

#006371

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #374fa3;
/* rgb */ color: rgb(55, 79, 163);
/* oklch */ color: oklch(45.6% 0.139 268.4);

Tailwind

colors: {
  custom: {
    50: '#7a7fbf',
    500: '#374fa3',
    950: '#000000',
  },
}

SCSS

$custom: #374fa3;
$custom-light: #7a7fbf;
$custom-dark: #000000;

JSON

{
  "hex": "#374fa3",
  "rgb": {
    "r": 55,
    "g": 79,
    "b": 163
  },
  "hsl": {
    "h": 226.667,
    "s": 49.541,
    "l": 42.745
  },
  "oklch": {
    "l": 0.45593,
    "c": 0.1385,
    "h": 268.4
  },
  "luminance": 0.09049
}

Semantic roles & 50–950 ramp

primary

#374FA3

secondary

#BEAE78

accent

#BA4FD9

background

#F7F7FB

surface

#EEEEF7

border

#C9C9D0

text

#0A0A12

muted

#7C7C81

Preview Lab

Preview with #374FA3

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

Preview Lab → · Contrast checker → · Palette generator →