#3773CE#3773CE

#3773CE is a mid, vivid blue. Relative luminance 0.175; OKLCH L 56.3% C 0.154 H 258.7°. Best body text is #FFFFFF at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#3773CE
RGB	rgb(55, 115, 206)
HSL	hsl(216, 61%, 51%)
HSV	hsv(216, 73%, 81%)
CMYK	cmyk(73.3%, 44.2%, 0%, 19.2%)
CIE-LAB	lab(48.92, 11.72, -52.74)
CIE-LCH	lch(48.92, 54.03, 282.53°)
OKLab	oklab(56.31% -0.0302 -0.151)
OKLCH	oklch(56.31% 0.154 258.7)
XYZ	xyz(18.8428, 17.5278, 60.7707)
Luminance	0.1753 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3773CE #CE9237

analogous

#37BECE #3773CE #4637CE

triadic

#3773CE #CE3773 #73CE37

tetradic

#3773CE #CE37BE #CE9237 #37CE46

square

#3773CE #CE37BE #CE9237 #37CE46

split-complementary

#3773CE #CE4637 #BECE37

monochromatic

#1B3D6F #2757A0 #3773CE #6895DA #99B8E6

Accessibility & contrast

On white

4.66

#3773CE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.51

#3773CE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3773CE

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3773CE	#FFFFFF	#000000	##FFFFFF
##3773CE	1.00	4.66	4.51	4.66
#FFFFFF	4.66	1.00	21.00	1.00
#000000	4.51	21.00	1.00	21.00
##FFFFFF	4.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#457CD1

Deuteranopia (green-blind)

#286ECC

Tritanopia (blue-blind)

#008896

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3773ce;
/* rgb */ color: rgb(55, 115, 206);
/* oklch */ color: oklch(56.3% 0.154 258.7);

Tailwind

colors: {
  custom: {
    50: '#819add',
    500: '#3773ce',
    950: '#000000',
  },
}

SCSS

$custom: #3773ce;
$custom-light: #819add;
$custom-dark: #000000;

JSON

{
  "hex": "#3773ce",
  "rgb": {
    "r": 55,
    "g": 115,
    "b": 206
  },
  "hsl": {
    "h": 216.159,
    "s": 60.643,
    "l": 51.176
  },
  "oklch": {
    "l": 0.56314,
    "c": 0.15401,
    "h": 258.7
  },
  "luminance": 0.1753
}

Semantic roles & 50–950 ramp

primary

#3773CE

secondary

#D2B78F

accent

#A444E4

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3773CE

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

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