#375CCC#375CCC

#375CCC is a mid, vivid blue. Relative luminance 0.128; OKLCH L 51.4% C 0.179 H 266.3°. Best body text is #FFFFFF at 5.89:1 contrast (WCAG AA passes).

Color values

HEX	#375CCC
RGB	rgb(55, 92, 204)
HSL	hsl(225, 59%, 51%)
HSV	hsv(225, 73%, 80%)
CMYK	cmyk(73%, 54.9%, 0%, 20%)
CIE-LAB	lab(42.50, 25.64, -61.95)
CIE-LCH	lch(42.50, 67.04, 292.48°)
OKLab	oklab(51.37% -0.0116 -0.1785)
OKLCH	oklch(51.37% 0.179 266.3)
XYZ	xyz(16.2980, 12.8244, 58.7315)
Luminance	0.1283 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#375CCC #CCA737

analogous

#37A6CC #375CCC #5C37CC

triadic

#375CCC #CC375C #5CCC37

tetradic

#375CCC #CC37A6 #CCA737 #37CC5C

square

#375CCC #CC37A6 #CCA737 #37CC5C

split-complementary

#375CCC #CC5C37 #A6CC37

monochromatic

#1C306D #28459E #375CCC #6884D8 #99ABE5

Accessibility & contrast

On white

5.89

#375CCC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.57

#375CCC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #375CCC

5.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##375CCC	#FFFFFF	#000000	##FFFFFF
##375CCC	1.00	5.89	3.57	5.89
#FFFFFF	5.89	1.00	21.00	1.00
#000000	3.57	21.00	1.00	21.00
##FFFFFF	5.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006BD0

Deuteranopia (green-blind)

#005ECA

Tritanopia (blue-blind)

#00778B

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #375ccc;
/* rgb */ color: rgb(55, 92, 204);
/* oklch */ color: oklch(51.4% 0.179 266.3);

Tailwind

colors: {
  custom: {
    50: '#8289dc',
    500: '#375ccc',
    950: '#000000',
  },
}

SCSS

$custom: #375ccc;
$custom-light: #8289dc;
$custom-dark: #000000;

JSON

{
  "hex": "#375ccc",
  "rgb": {
    "r": 55,
    "g": 92,
    "b": 204
  },
  "hsl": {
    "h": 225.101,
    "s": 59.363,
    "l": 50.784
  },
  "oklch": {
    "l": 0.5137,
    "c": 0.17887,
    "h": 266.3
  },
  "luminance": 0.12826
}

Semantic roles & 50–950 ramp

primary

#375CCC

secondary

#D0C08E

accent

#BB45E3

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #375CCC

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

Preview Lab → · Contrast checker → · Palette generator →