#375BBB#375BBB

#375BBB is a mid, vivid blue. Relative luminance 0.119; OKLCH L 49.9% C 0.157 H 265.5°. Best body text is #FFFFFF at 6.22:1 contrast (WCAG AA passes).

Color values

HEX	#375BBB
RGB	rgb(55, 91, 187)
HSL	hsl(224, 55%, 47%)
HSV	hsv(224, 71%, 73%)
CMYK	cmyk(70.6%, 51.3%, 0%, 26.7%)
CIE-LAB	lab(41.03, 20.02, -54.47)
CIE-LCH	lch(41.03, 58.03, 290.19°)
OKLab	oklab(49.88% -0.0122 -0.1565)
OKLCH	oklch(49.88% 0.157 265.5)
XYZ	xyz(14.2831, 11.8808, 48.5446)
Luminance	0.1188 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#375BBB #BB9737

analogous

#379DBB #375BBB #5537BB

triadic

#375BBB #BB375B #5BBB37

tetradic

#375BBB #BB379D #BB9737 #37BB55

square

#375BBB #BB379D #BB9737 #37BB55

split-complementary

#375BBB #BB5537 #9DBB37

monochromatic

#1B2D5C #29448C #375BBB #5F7ED0 #8EA4DE

Accessibility & contrast

On white

6.22

#375BBB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.38

#375BBB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #375BBB

6.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##375BBB	#FFFFFF	#000000	##FFFFFF
##375BBB	1.00	6.22	3.38	6.22
#FFFFFF	6.22	1.00	21.00	1.00
#000000	3.38	21.00	1.00	21.00
##FFFFFF	6.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2067BE

Deuteranopia (green-blind)

#005BB9

Tritanopia (blue-blind)

#007282

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #375bbb;
/* rgb */ color: rgb(55, 91, 187);
/* oklch */ color: oklch(49.9% 0.157 265.5);

Tailwind

colors: {
  custom: {
    50: '#7e88d0',
    500: '#375bbb',
    950: '#000000',
  },
}

SCSS

$custom: #375bbb;
$custom-light: #7e88d0;
$custom-dark: #000000;

JSON

{
  "hex": "#375bbb",
  "rgb": {
    "r": 55,
    "g": 91,
    "b": 187
  },
  "hsl": {
    "h": 223.636,
    "s": 54.545,
    "l": 47.451
  },
  "oklch": {
    "l": 0.49875,
    "c": 0.15699,
    "h": 265.5
  },
  "luminance": 0.11882
}

Semantic roles & 50–950 ramp

primary

#375BBB

secondary

#C9B685

accent

#B64ADE

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #375BBB

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

Preview Lab → · Contrast checker → · Palette generator →