#3773C7#3773C7

#3773C7 is a mid, vivid blue. Relative luminance 0.172; OKLCH L 55.9% C 0.145 H 257.4°. Best body text is #FFFFFF at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#3773C7
RGB	rgb(55, 115, 199)
HSL	hsl(215, 57%, 50%)
HSV	hsv(215, 72%, 78%)
CMYK	cmyk(72.4%, 42.2%, 0%, 22%)
CIE-LAB	lab(48.51, 9.15, -49.40)
CIE-LCH	lch(48.51, 50.24, 280.50°)
OKLab	oklab(55.86% -0.0316 -0.1412)
OKLCH	oklch(55.86% 0.145 257.4)
XYZ	xyz(18.0113, 17.1952, 56.3915)
Luminance	0.1720 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3773C7 #C78B37

analogous

#37BBC7 #3773C7 #4337C7

triadic

#3773C7 #C73773 #73C737

tetradic

#3773C7 #C737BB #C78B37 #37C743

square

#3773C7 #C737BB #C78B37 #37C743

split-complementary

#3773C7 #C74337 #BBC737

monochromatic

#1C3C67 #2A5797 #3773C7 #6694D5 #96B6E2

Accessibility & contrast

On white

4.73

#3773C7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.44

#3773C7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3773C7

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3773C7	#FFFFFF	#000000	##FFFFFF
##3773C7	1.00	4.73	4.44	4.73
#FFFFFF	4.73	1.00	21.00	1.00
#000000	4.44	21.00	1.00	21.00
##FFFFFF	4.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A7ACA

Deuteranopia (green-blind)

#326DC5

Tritanopia (blue-blind)

#008793

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3773c7;
/* rgb */ color: rgb(55, 115, 199);
/* oklch */ color: oklch(55.9% 0.145 257.4);

Tailwind

colors: {
  custom: {
    50: '#809ad8',
    500: '#3773c7',
    950: '#000000',
  },
}

SCSS

$custom: #3773c7;
$custom-light: #809ad8;
$custom-dark: #000000;

JSON

{
  "hex": "#3773c7",
  "rgb": {
    "r": 55,
    "g": 115,
    "b": 199
  },
  "hsl": {
    "h": 215,
    "s": 56.693,
    "l": 49.804
  },
  "oklch": {
    "l": 0.55861,
    "c": 0.14469,
    "h": 257.4
  },
  "luminance": 0.17197
}

Semantic roles & 50–950 ramp

primary

#3773C7

secondary

#CDB28C

accent

#A148E0

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #3773C7

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

Preview Lab → · Contrast checker → · Palette generator →