#3771C6#3771C6

#3771C6 is a mid, vivid blue. Relative luminance 0.167; OKLCH L 55.4% C 0.146 H 258.1°. Best body text is #FFFFFF at 4.84:1 contrast (WCAG AA passes).

Color values

HEX	#3771C6
RGB	rgb(55, 113, 198)
HSL	hsl(216, 57%, 50%)
HSV	hsv(216, 72%, 78%)
CMYK	cmyk(72.2%, 42.9%, 0%, 22.4%)
CIE-LAB	lab(47.88, 10.03, -49.83)
CIE-LCH	lch(47.88, 50.83, 281.39°)
OKLab	oklab(55.36% -0.03 -0.1425)
OKLCH	oklch(55.36% 0.146 258.1)
XYZ	xyz(17.6700, 16.6978, 55.7069)
Luminance	0.1670 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3771C6 #C68C37

analogous

#37B9C6 #3771C6 #4437C6

triadic

#3771C6 #C63771 #71C637

tetradic

#3771C6 #C637B9 #C68C37 #37C644

square

#3771C6 #C637B9 #C68C37 #37C644

split-complementary

#3771C6 #C64437 #B9C637

monochromatic

#1C3A66 #2A5696 #3771C6 #6693D4 #96B5E2

Accessibility & contrast

On white

4.84

#3771C6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.34

#3771C6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3771C6

4.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3771C6	#FFFFFF	#000000	##FFFFFF
##3771C6	1.00	4.84	4.34	4.84
#FFFFFF	4.84	1.00	21.00	1.00
#000000	4.34	21.00	1.00	21.00
##FFFFFF	4.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4879C9

Deuteranopia (green-blind)

#2E6CC4

Tritanopia (blue-blind)

#008592

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #3771c6;
/* rgb */ color: rgb(55, 113, 198);
/* oklch */ color: oklch(55.4% 0.146 258.1);

Tailwind

colors: {
  custom: {
    50: '#8099d8',
    500: '#3771c6',
    950: '#000000',
  },
}

SCSS

$custom: #3771c6;
$custom-light: #8099d8;
$custom-dark: #000000;

JSON

{
  "hex": "#3771c6",
  "rgb": {
    "r": 55,
    "g": 113,
    "b": 198
  },
  "hsl": {
    "h": 215.664,
    "s": 56.522,
    "l": 49.608
  },
  "oklch": {
    "l": 0.55356,
    "c": 0.14561,
    "h": 258.1
  },
  "luminance": 0.167
}

Semantic roles & 50–950 ramp

primary

#3771C6

secondary

#CDB38C

accent

#A248E0

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0B0D14

muted

#7C7E83

Preview Lab

Preview with #3771C6

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

Preview Lab → · Contrast checker → · Palette generator →