#374EB8#374EB8

#374EB8 is a mid, vivid blue. Relative luminance 0.097; OKLCH L 47.0% C 0.169 H 269.5°. Best body text is #FFFFFF at 7.13:1 contrast (WCAG AA passes).

Color values

HEX	#374EB8
RGB	rgb(55, 78, 184)
HSL	hsl(229, 54%, 47%)
HSV	hsv(229, 70%, 72%)
CMYK	cmyk(70.1%, 57.6%, 0%, 27.8%)
CIE-LAB	lab(37.34, 27.38, -58.69)
CIE-LCH	lch(37.34, 64.76, 295.01°)
OKLab	oklab(47.03% -0.0015 -0.1691)
OKLCH	oklch(47.03% 0.169 269.5)
XYZ	xyz(12.9487, 9.7204, 46.5319)
Luminance	0.0972 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374EB8 #B8A137

analogous

#378FB8 #374EB8 #6037B8

triadic

#374EB8 #B8374E #4EB837

tetradic

#374EB8 #B8378F #B8A137 #37B860

square

#374EB8 #B8378F #B8A137 #37B860

split-complementary

#374EB8 #B86037 #8FB837

monochromatic

#1B265A #293A89 #374EB8 #5D72CF #8D9BDD

Accessibility & contrast

On white

7.13

#374EB8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.94

#374EB8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374EB8

7.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374EB8	#FFFFFF	#000000	##FFFFFF
##374EB8	1.00	7.13	2.94	7.13
#FFFFFF	7.13	1.00	21.00	1.00
#000000	2.94	21.00	1.00	21.00
##FFFFFF	7.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005EBC

Deuteranopia (green-blind)

#0052B6

Tritanopia (blue-blind)

#00687B

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #374eb8;
/* rgb */ color: rgb(55, 78, 184);
/* oklch */ color: oklch(47.0% 0.169 269.5);

Tailwind

colors: {
  custom: {
    50: '#7e7fce',
    500: '#374eb8',
    950: '#000000',
  },
}

SCSS

$custom: #374eb8;
$custom-light: #7e7fce;
$custom-dark: #000000;

JSON

{
  "hex": "#374eb8",
  "rgb": {
    "r": 55,
    "g": 78,
    "b": 184
  },
  "hsl": {
    "h": 229.302,
    "s": 53.975,
    "l": 46.863
  },
  "oklch": {
    "l": 0.47025,
    "c": 0.16913,
    "h": 269.5
  },
  "luminance": 0.09722
}

Semantic roles & 50–950 ramp

primary

#374EB8

secondary

#C7BB84

accent

#C34ADD

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #374EB8

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

Preview Lab → · Contrast checker → · Palette generator →