#375BCB#375BCB

#375BCB is a mid, vivid blue. Relative luminance 0.126; OKLCH L 51.1% C 0.179 H 266.5°. Best body text is #FFFFFF at 5.96:1 contrast (WCAG AA passes).

Color values

HEX	#375BCB
RGB	rgb(55, 91, 203)
HSL	hsl(225, 59%, 51%)
HSV	hsv(225, 73%, 80%)
CMYK	cmyk(72.9%, 55.2%, 0%, 20.4%)
CIE-LAB	lab(42.16, 25.91, -61.92)
CIE-LCH	lch(42.16, 67.12, 292.71°)
OKLab	oklab(51.09% -0.0109 -0.1784)
OKLCH	oklch(51.09% 0.179 266.5)
XYZ	xyz(16.0924, 12.6045, 58.0731)
Luminance	0.1261 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#375BCB #CBA737

analogous

#37A5CB #375BCB #5D37CB

triadic

#375BCB #CB375B #5BCB37

tetradic

#375BCB #CB37A5 #CBA737 #37CB5D

square

#375BCB #CB37A5 #CBA737 #37CB5D

split-complementary

#375BCB #CB5D37 #A5CB37

monochromatic

#1C2F6C #29459C #375BCB #6883D8 #98ABE4

Accessibility & contrast

On white

5.96

#375BCB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.52

#375BCB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #375BCB

5.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##375BCB	#FFFFFF	#000000	##FFFFFF
##375BCB	1.00	5.96	3.52	5.96
#FFFFFF	5.96	1.00	21.00	1.00
#000000	3.52	21.00	1.00	21.00
##FFFFFF	5.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006BCF

Deuteranopia (green-blind)

#005DC9

Tritanopia (blue-blind)

#00768A

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #375bcb;
/* rgb */ color: rgb(55, 91, 203);
/* oklch */ color: oklch(51.1% 0.179 266.5);

Tailwind

colors: {
  custom: {
    50: '#8188dc',
    500: '#375bcb',
    950: '#000000',
  },
}

SCSS

$custom: #375bcb;
$custom-light: #8188dc;
$custom-dark: #000000;

JSON

{
  "hex": "#375bcb",
  "rgb": {
    "r": 55,
    "g": 91,
    "b": 203
  },
  "hsl": {
    "h": 225.405,
    "s": 58.73,
    "l": 50.588
  },
  "oklch": {
    "l": 0.51093,
    "c": 0.17875,
    "h": 266.5
  },
  "luminance": 0.12606
}

Semantic roles & 50–950 ramp

primary

#375BCB

secondary

#D0C08E

accent

#BC46E2

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #375BCB

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

Preview Lab → · Contrast checker → · Palette generator →