#3775E0#3775E0

#3775E0 is a mid, vivid blue. Relative luminance 0.189; OKLCH L 58.0% C 0.176 H 260.5°. Best body text is #000000 at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#3775E0
RGB	rgb(55, 117, 224)
HSL	hsl(218, 73%, 55%)
HSV	hsv(218, 75%, 88%)
CMYK	cmyk(75.4%, 47.8%, 0%, 12.2%)
CIE-LAB	lab(50.59, 17.10, -60.27)
CIE-LCH	lch(50.59, 62.64, 285.84°)
OKLab	oklab(57.96% -0.0289 -0.1731)
OKLCH	oklch(57.96% 0.176 260.5)
XYZ	xyz(21.3865, 18.9142, 73.0302)
Luminance	0.1892 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3775E0 #E0A237

analogous

#37CAE0 #3775E0 #4E37E0

triadic

#3775E0 #E03775 #75E037

tetradic

#3775E0 #E037CA #E0A237 #37E04E

square

#3775E0 #E037CA #E0A237 #37E04E

split-complementary

#3775E0 #E04E37 #CAE037

monochromatic

#153F88 #1D58BD #3775E0 #6C9AE8 #A1BEF0

Accessibility & contrast

On white

4.39

#3775E0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.78

#3775E0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3775E0

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3775E0	#FFFFFF	#000000	##000000
##3775E0	1.00	4.39	4.78	4.78
#FFFFFF	4.39	1.00	21.00	21.00
#000000	4.78	21.00	1.00	1.00
##000000	4.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3981E4

Deuteranopia (green-blind)

#0071DE

Tritanopia (blue-blind)

#008FA0

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #3775e0;
/* rgb */ color: rgb(55, 117, 224);
/* oklch */ color: oklch(58.0% 0.176 260.5);

Tailwind

colors: {
  custom: {
    50: '#859cea',
    500: '#3775e0',
    950: '#000000',
  },
}

SCSS

$custom: #3775e0;
$custom-light: #859cea;
$custom-dark: #000000;

JSON

{
  "hex": "#3775e0",
  "rgb": {
    "r": 55,
    "g": 117,
    "b": 224
  },
  "hsl": {
    "h": 217.988,
    "s": 73.16,
    "l": 54.706
  },
  "oklch": {
    "l": 0.57957,
    "c": 0.17551,
    "h": 260.5
  },
  "luminance": 0.18917
}

Semantic roles & 50–950 ramp

primary

#3775E0

secondary

#DDC396

accent

#AC38F0

background

#F8F9FE

surface

#F0F2FD

border

#CBCCD5

text

#0D0E16

muted

#7D7E84

Preview Lab

Preview with #3775E0

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

Preview Lab → · Contrast checker → · Palette generator →