#3771C4#3771C4

#3771C4 is a mid, vivid blue. Relative luminance 0.166; OKLCH L 55.2% C 0.143 H 257.7°. Best body text is #FFFFFF at 4.86:1 contrast (WCAG AA passes).

Color values

HEX	#3771C4
RGB	rgb(55, 113, 196)
HSL	hsl(215, 56%, 49%)
HSV	hsv(215, 72%, 77%)
CMYK	cmyk(71.9%, 42.3%, 0%, 23.1%)
CIE-LAB	lab(47.76, 9.30, -48.87)
CIE-LCH	lch(47.76, 49.74, 280.78°)
OKLab	oklab(55.23% -0.0304 -0.1397)
OKLCH	oklch(55.23% 0.143 257.7)
XYZ	xyz(17.4409, 16.6061, 54.5000)
Luminance	0.1661 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3771C4 #C48A37

analogous

#37B8C4 #3771C4 #4437C4

triadic

#3771C4 #C43771 #71C437

tetradic

#3771C4 #C437B8 #C48A37 #37C444

square

#3771C4 #C437B8 #C48A37 #37C444

split-complementary

#3771C4 #C44437 #B8C437

monochromatic

#1C3A64 #2A5594 #3771C4 #6592D4 #94B4E1

Accessibility & contrast

On white

4.86

#3771C4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.32

#3771C4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3771C4

4.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3771C4	#FFFFFF	#000000	##FFFFFF
##3771C4	1.00	4.86	4.32	4.86
#FFFFFF	4.86	1.00	21.00	1.00
#000000	4.32	21.00	1.00	21.00
##FFFFFF	4.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4978C7

Deuteranopia (green-blind)

#316BC2

Tritanopia (blue-blind)

#008491

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #3771c4;
/* rgb */ color: rgb(55, 113, 196);
/* oklch */ color: oklch(55.2% 0.143 257.7);

Tailwind

colors: {
  custom: {
    50: '#7f99d6',
    500: '#3771c4',
    950: '#000000',
  },
}

SCSS

$custom: #3771c4;
$custom-light: #7f99d6;
$custom-dark: #000000;

JSON

{
  "hex": "#3771c4",
  "rgb": {
    "r": 55,
    "g": 113,
    "b": 196
  },
  "hsl": {
    "h": 215.319,
    "s": 56.175,
    "l": 49.216
  },
  "oklch": {
    "l": 0.55227,
    "c": 0.14293,
    "h": 257.7
  },
  "luminance": 0.16608
}

Semantic roles & 50–950 ramp

primary

#3771C4

secondary

#CCB18B

accent

#A148DF

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0B0D14

muted

#7C7E83

Preview Lab

Preview with #3771C4

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

Preview Lab → · Contrast checker → · Palette generator →