#3771BA#3771BA

#3771BA is a mid, vivid cyan. Relative luminance 0.162; OKLCH L 54.6% C 0.130 H 255.4°. Best body text is #FFFFFF at 4.96:1 contrast (WCAG AA passes).

Color values

HEX	#3771BA
RGB	rgb(55, 113, 186)
HSL	hsl(213, 54%, 47%)
HSV	hsv(213, 70%, 73%)
CMYK	cmyk(70.4%, 39.2%, 0%, 27.1%)
CIE-LAB	lab(47.19, 5.64, -44.00)
CIE-LCH	lch(47.19, 44.37, 277.31°)
OKLab	oklab(54.6% -0.0326 -0.1254)
OKLCH	oklch(54.6% 0.13 255.4)
XYZ	xyz(16.3404, 16.1659, 48.7040)
Luminance	0.1617 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3771BA #BA8037

analogous

#37B3BA #3771BA #3E37BA

triadic

#3771BA #BA3771 #71BA37

tetradic

#3771BA #BA37B3 #BA8037 #37BA3E

square

#3771BA #BA37B3 #BA8037 #37BA3E

split-complementary

#3771BA #BA3E37 #B3BA37

monochromatic

#1B385C #29548B #3771BA #5F91D0 #8EB1DE

Accessibility & contrast

On white

4.96

#3771BA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.23

#3771BA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3771BA

4.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3771BA	#FFFFFF	#000000	##FFFFFF
##3771BA	1.00	4.96	4.23	4.96
#FFFFFF	4.96	1.00	21.00	1.00
#000000	4.23	21.00	1.00	21.00
##FFFFFF	4.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F77BD

Deuteranopia (green-blind)

#3B6AB9

Tritanopia (blue-blind)

#00828C

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #3771ba;
/* rgb */ color: rgb(55, 113, 186);
/* oklch */ color: oklch(54.6% 0.130 255.4);

Tailwind

colors: {
  custom: {
    50: '#7d99cf',
    500: '#3771ba',
    950: '#000000',
  },
}

SCSS

$custom: #3771ba;
$custom-light: #7d99cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3771ba",
  "rgb": {
    "r": 55,
    "g": 113,
    "b": 186
  },
  "hsl": {
    "h": 213.435,
    "s": 54.357,
    "l": 47.255
  },
  "oklch": {
    "l": 0.54601,
    "c": 0.12956,
    "h": 255.4
  },
  "luminance": 0.16168
}

Semantic roles & 50–950 ramp

primary

#3771BA

secondary

#C8AA85

accent

#9C4ADE

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #3771BA

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

Preview Lab → · Contrast checker → · Palette generator →