#374FB5#374FB5

#374FB5 is a mid, vivid blue. Relative luminance 0.097; OKLCH L 47.0% C 0.164 H 269.1°. Best body text is #FFFFFF at 7.12:1 contrast (WCAG AA passes).

Color values

HEX	#374FB5
RGB	rgb(55, 79, 181)
HSL	hsl(229, 53%, 46%)
HSV	hsv(229, 70%, 71%)
CMYK	cmyk(69.6%, 56.4%, 0%, 29%)
CIE-LAB	lab(37.37, 25.64, -56.87)
CIE-LCH	lch(37.37, 62.38, 294.27°)
OKLab	oklab(46.98% -0.0024 -0.1637)
OKLCH	oklch(46.98% 0.164 269.1)
XYZ	xyz(12.7092, 9.7391, 44.9172)
Luminance	0.0974 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374FB5 #B59D37

analogous

#378EB5 #374FB5 #5E37B5

triadic

#374FB5 #B5374F #4FB537

tetradic

#374FB5 #B5378E #B59D37 #37B55E

square

#374FB5 #B5378E #B59D37 #37B55E

split-complementary

#374FB5 #B55E37 #8EB537

monochromatic

#1A2657 #293B86 #374FB5 #5C71CD #8B9ADC

Accessibility & contrast

On white

7.12

#374FB5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.95

#374FB5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374FB5

7.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374FB5	#FFFFFF	#000000	##FFFFFF
##374FB5	1.00	7.12	2.95	7.12
#FFFFFF	7.12	1.00	21.00	1.00
#000000	2.95	21.00	1.00	21.00
##FFFFFF	7.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005EB8

Deuteranopia (green-blind)

#0052B3

Tritanopia (blue-blind)

#00687A

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #374fb5;
/* rgb */ color: rgb(55, 79, 181);
/* oklch */ color: oklch(47.0% 0.164 269.1);

Tailwind

colors: {
  custom: {
    50: '#7d80cc',
    500: '#374fb5',
    950: '#000000',
  },
}

SCSS

$custom: #374fb5;
$custom-light: #7d80cc;
$custom-dark: #000000;

JSON

{
  "hex": "#374fb5",
  "rgb": {
    "r": 55,
    "g": 79,
    "b": 181
  },
  "hsl": {
    "h": 228.571,
    "s": 53.39,
    "l": 46.275
  },
  "oklch": {
    "l": 0.46979,
    "c": 0.16376,
    "h": 269.1
  },
  "luminance": 0.0974
}

Semantic roles & 50–950 ramp

primary

#374FB5

secondary

#C6B982

accent

#C14BDD

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #374FB5

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

Preview Lab → · Contrast checker → · Palette generator →