#375BB4#375BB4

#375BB4 is a mid, vivid blue. Relative luminance 0.116; OKLCH L 49.4% C 0.147 H 264.9°. Best body text is #FFFFFF at 6.33:1 contrast (WCAG AA passes).

Color values

HEX	#375BB4
RGB	rgb(55, 91, 180)
HSL	hsl(223, 53%, 46%)
HSV	hsv(223, 69%, 71%)
CMYK	cmyk(69.4%, 49.4%, 0%, 29.4%)
CIE-LAB	lab(40.55, 17.44, -51.13)
CIE-LCH	lch(40.55, 54.02, 288.84°)
OKLab	oklab(49.36% -0.013 -0.1467)
OKLCH	oklch(49.36% 0.147 264.9)
XYZ	xyz(13.5520, 11.5883, 44.6937)
Luminance	0.1159 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#375BB4 #B49037

analogous

#3799B4 #375BB4 #5137B4

triadic

#375BB4 #B4375B #5BB437

tetradic

#375BB4 #B43799 #B49037 #37B451

square

#375BB4 #B43799 #B49037 #37B451

split-complementary

#375BB4 #B45137 #99B437

monochromatic

#1A2C56 #294385 #375BB4 #5B7CCD #8AA1DB

Accessibility & contrast

On white

6.33

#375BB4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.32

#375BB4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #375BB4

6.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##375BB4	#FFFFFF	#000000	##FFFFFF
##375BB4	1.00	6.33	3.32	6.33
#FFFFFF	6.33	1.00	21.00	1.00
#000000	3.32	21.00	1.00	21.00
##FFFFFF	6.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2966B7

Deuteranopia (green-blind)

#005AB2

Tritanopia (blue-blind)

#00707F

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #375bb4;
/* rgb */ color: rgb(55, 91, 180);
/* oklch */ color: oklch(49.4% 0.147 264.9);

Tailwind

colors: {
  custom: {
    50: '#7d88cb',
    500: '#375bb4',
    950: '#000000',
  },
}

SCSS

$custom: #375bb4;
$custom-light: #7d88cb;
$custom-dark: #000000;

JSON

{
  "hex": "#375bb4",
  "rgb": {
    "r": 55,
    "g": 91,
    "b": 180
  },
  "hsl": {
    "h": 222.72,
    "s": 53.191,
    "l": 46.078
  },
  "oklch": {
    "l": 0.49365,
    "c": 0.14726,
    "h": 264.9
  },
  "luminance": 0.1159
}

Semantic roles & 50–950 ramp

primary

#375BB4

secondary

#C6B281

accent

#B34BDD

background

#F8F8FC

surface

#EFEFF8

border

#CACAD1

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #375BB4

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

Preview Lab → · Contrast checker → · Palette generator →