#374BB1#374BB1

#374BB1 is a mid, vivid blue. Relative luminance 0.090; OKLCH L 45.9% C 0.163 H 270.3°. Best body text is #FFFFFF at 7.49:1 contrast (WCAG AA passes).

Color values

HEX	#374BB1
RGB	rgb(55, 75, 177)
HSL	hsl(230, 53%, 45%)
HSV	hsv(230, 69%, 69%)
CMYK	cmyk(68.9%, 57.6%, 0%, 30.6%)
CIE-LAB	lab(36.02, 26.79, -56.70)
CIE-LCH	lch(36.02, 62.71, 295.29°)
OKLab	oklab(45.87% 0.0008 -0.1633)
OKLCH	oklch(45.87% 0.163 270.3)
XYZ	xyz(12.0247, 9.0175, 42.6933)
Luminance	0.0902 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374BB1 #B19D37

analogous

#3788B1 #374BB1 #6037B1

triadic

#374BB1 #B1374B #4BB137

tetradic

#374BB1 #B13788 #B19D37 #37B160

square

#374BB1 #B13788 #B19D37 #37B160

split-complementary

#374BB1 #B16037 #88B137

monochromatic

#1A2354 #283782 #374BB1 #5A6CCC #8896DA

Accessibility & contrast

On white

7.49

#374BB1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.80

#374BB1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374BB1

7.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374BB1	#FFFFFF	#000000	##FFFFFF
##374BB1	1.00	7.49	2.80	7.49
#FFFFFF	7.49	1.00	21.00	1.00
#000000	2.80	21.00	1.00	21.00
##FFFFFF	7.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005AB4

Deuteranopia (green-blind)

#004FAF

Tritanopia (blue-blind)

#006476

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #374bb1;
/* rgb */ color: rgb(55, 75, 177);
/* oklch */ color: oklch(45.9% 0.163 270.3);

Tailwind

colors: {
  custom: {
    50: '#7d7dc9',
    500: '#374bb1',
    950: '#000000',
  },
}

SCSS

$custom: #374bb1;
$custom-light: #7d7dc9;
$custom-dark: #000000;

JSON

{
  "hex": "#374bb1",
  "rgb": {
    "r": 55,
    "g": 75,
    "b": 177
  },
  "hsl": {
    "h": 230.164,
    "s": 52.586,
    "l": 45.49
  },
  "oklch": {
    "l": 0.45872,
    "c": 0.1633,
    "h": 270.3
  },
  "luminance": 0.09019
}

Semantic roles & 50–950 ramp

primary

#374BB1

secondary

#C4B980

accent

#C44CDC

background

#F8F7FC

surface

#EFEEF8

border

#CAC9D1

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #374BB1

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

Preview Lab → · Contrast checker → · Palette generator →