#374FB3#374FB3

#374FB3 is a mid, vivid blue. Relative luminance 0.097; OKLCH L 46.8% C 0.161 H 269.1°. Best body text is #FFFFFF at 7.16:1 contrast (WCAG AA passes).

Color values

HEX	#374FB3
RGB	rgb(55, 79, 179)
HSL	hsl(228, 53%, 46%)
HSV	hsv(228, 69%, 70%)
CMYK	cmyk(69.3%, 55.9%, 0%, 29.8%)
CIE-LAB	lab(37.22, 24.91, -55.93)
CIE-LCH	lch(37.22, 61.22, 294.00°)
OKLab	oklab(46.82% -0.0026 -0.161)
OKLCH	oklch(46.82% 0.161 269.1)
XYZ	xyz(12.5054, 9.6576, 43.8442)
Luminance	0.0966 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374FB3 #B39B37

analogous

#378DB3 #374FB3 #5D37B3

triadic

#374FB3 #B3374F #4FB337

tetradic

#374FB3 #B3378D #B39B37 #37B35D

square

#374FB3 #B3378D #B39B37 #37B35D

split-complementary

#374FB3 #B35D37 #8DB337

monochromatic

#1A2655 #293A84 #374FB3 #5B71CD #8A99DB

Accessibility & contrast

On white

7.16

#374FB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.93

#374FB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374FB3

7.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374FB3	#FFFFFF	#000000	##FFFFFF
##374FB3	1.00	7.16	2.93	7.16
#FFFFFF	7.16	1.00	21.00	1.00
#000000	2.93	21.00	1.00	21.00
##FFFFFF	7.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DB6

Deuteranopia (green-blind)

#0052B1

Tritanopia (blue-blind)

#006779

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #374fb3;
/* rgb */ color: rgb(55, 79, 179);
/* oklch */ color: oklch(46.8% 0.161 269.1);

Tailwind

colors: {
  custom: {
    50: '#7d80ca',
    500: '#374fb3',
    950: '#000000',
  },
}

SCSS

$custom: #374fb3;
$custom-light: #7d80ca;
$custom-dark: #000000;

JSON

{
  "hex": "#374fb3",
  "rgb": {
    "r": 55,
    "g": 79,
    "b": 179
  },
  "hsl": {
    "h": 228.387,
    "s": 52.991,
    "l": 45.882
  },
  "oklch": {
    "l": 0.4682,
    "c": 0.16101,
    "h": 269.1
  },
  "luminance": 0.09659
}

Semantic roles & 50–950 ramp

primary

#374FB3

secondary

#C5B881

accent

#C04BDC

background

#F8F7FC

surface

#EFEEF8

border

#CAC9D1

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #374FB3

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

Preview Lab → · Contrast checker → · Palette generator →