#3771B7#3771B7

#3771B7 is a mid, vivid cyan. Relative luminance 0.160; OKLCH L 54.4% C 0.126 H 254.6°. Best body text is #FFFFFF at 4.99:1 contrast (WCAG AA passes).

Color values

HEX	#3771B7
RGB	rgb(55, 113, 183)
HSL	hsl(213, 54%, 47%)
HSV	hsv(213, 70%, 72%)
CMYK	cmyk(69.9%, 38.3%, 0%, 28.2%)
CIE-LAB	lab(47.03, 4.55, -42.53)
CIE-LCH	lch(47.03, 42.77, 276.11°)
OKLab	oklab(54.42% -0.0333 -0.1211)
OKLCH	oklch(54.42% 0.126 254.6)
XYZ	xyz(16.0248, 16.0397, 47.0420)
Luminance	0.1604 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3771B7 #B77D37

analogous

#37B1B7 #3771B7 #3D37B7

triadic

#3771B7 #B73771 #71B737

tetradic

#3771B7 #B737B1 #B77D37 #37B73D

square

#3771B7 #B737B1 #B77D37 #37B73D

split-complementary

#3771B7 #B73D37 #B1B737

monochromatic

#1B3759 #295488 #3771B7 #5D90CE #8CB0DC

Accessibility & contrast

On white

4.99

#3771B7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.21

#3771B7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3771B7

4.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3771B7	#FFFFFF	#000000	##FFFFFF
##3771B7	1.00	4.99	4.21	4.99
#FFFFFF	4.99	1.00	21.00	1.00
#000000	4.21	21.00	1.00	21.00
##FFFFFF	4.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5176BA

Deuteranopia (green-blind)

#3E6AB6

Tritanopia (blue-blind)

#00818B

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #3771b7;
/* rgb */ color: rgb(55, 113, 183);
/* oklch */ color: oklch(54.4% 0.126 254.6);

Tailwind

colors: {
  custom: {
    50: '#7d99cd',
    500: '#3771b7',
    950: '#000000',
  },
}

SCSS

$custom: #3771b7;
$custom-light: #7d99cd;
$custom-dark: #000000;

JSON

{
  "hex": "#3771b7",
  "rgb": {
    "r": 55,
    "g": 113,
    "b": 183
  },
  "hsl": {
    "h": 212.813,
    "s": 53.782,
    "l": 46.667
  },
  "oklch": {
    "l": 0.54419,
    "c": 0.12557,
    "h": 254.6
  },
  "luminance": 0.16041
}

Semantic roles & 50–950 ramp

primary

#3771B7

secondary

#C7A883

accent

#9B4BDD

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0D13

muted

#7C7E82

Preview Lab

Preview with #3771B7

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

Preview Lab → · Contrast checker → · Palette generator →