#374AB4#374AB4

#374AB4 is a mid, vivid blue. Relative luminance 0.090; OKLCH L 45.9% C 0.169 H 270.6°. Best body text is #FFFFFF at 7.50:1 contrast (WCAG AA passes).

Color values

HEX	#374AB4
RGB	rgb(55, 74, 180)
HSL	hsl(231, 53%, 46%)
HSV	hsv(231, 69%, 71%)
CMYK	cmyk(69.4%, 58.9%, 0%, 29.4%)
CIE-LAB	lab(35.99, 28.53, -58.52)
CIE-LCH	lch(35.99, 65.10, 295.99°)
OKLab	oklab(45.93% 0.0016 -0.1687)
OKLCH	oklch(45.93% 0.169 270.6)
XYZ	xyz(12.2597, 9.0039, 44.2630)
Luminance	0.0901 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374AB4 #B4A137

analogous

#3788B4 #374AB4 #6237B4

triadic

#374AB4 #B4374A #4AB437

tetradic

#374AB4 #B43788 #B4A137 #37B462

square

#374AB4 #B43788 #B4A137 #37B462

split-complementary

#374AB4 #B46237 #88B437

monochromatic

#1A2356 #293785 #374AB4 #5B6DCD #8A96DB

Accessibility & contrast

On white

7.50

#374AB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.80

#374AB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374AB4

7.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374AB4	#FFFFFF	#000000	##FFFFFF
##374AB4	1.00	7.50	2.80	7.50
#FFFFFF	7.50	1.00	21.00	1.00
#000000	2.80	21.00	1.00	21.00
##FFFFFF	7.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BB8

Deuteranopia (green-blind)

#004FB2

Tritanopia (blue-blind)

#006478

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #374ab4;
/* rgb */ color: rgb(55, 74, 180);
/* oklch */ color: oklch(45.9% 0.169 270.6);

Tailwind

colors: {
  custom: {
    50: '#7e7ccb',
    500: '#374ab4',
    950: '#000000',
  },
}

SCSS

$custom: #374ab4;
$custom-light: #7e7ccb;
$custom-dark: #000000;

JSON

{
  "hex": "#374ab4",
  "rgb": {
    "r": 55,
    "g": 74,
    "b": 180
  },
  "hsl": {
    "h": 230.88,
    "s": 53.191,
    "l": 46.078
  },
  "oklch": {
    "l": 0.45926,
    "c": 0.16867,
    "h": 270.6
  },
  "luminance": 0.09005
}

Semantic roles & 50–950 ramp

primary

#374AB4

secondary

#C6BB81

accent

#C64BDD

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #374AB4

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

Preview Lab → · Contrast checker → · Palette generator →