#3771B5#3771B5

#3771B5 is a mid, vivid cyan. Relative luminance 0.160; OKLCH L 54.3% C 0.123 H 254.0°. Best body text is #FFFFFF at 5.01:1 contrast (WCAG AA passes).

Color values

HEX	#3771B5
RGB	rgb(55, 113, 181)
HSL	hsl(212, 53%, 46%)
HSV	hsv(212, 70%, 71%)
CMYK	cmyk(69.6%, 37.6%, 0%, 29%)
CIE-LAB	lab(46.92, 3.83, -41.54)
CIE-LCH	lch(46.92, 41.72, 275.27°)
OKLab	oklab(54.3% -0.0338 -0.1182)
OKLCH	oklch(54.3% 0.123 254)
XYZ	xyz(15.8181, 15.9570, 45.9535)
Luminance	0.1596 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3771B5 #B57B37

analogous

#37B0B5 #3771B5 #3C37B5

triadic

#3771B5 #B53771 #71B537

tetradic

#3771B5 #B537B0 #B57B37 #37B53C

square

#3771B5 #B537B0 #B57B37 #37B53C

split-complementary

#3771B5 #B53C37 #B0B537

monochromatic

#1A3657 #295486 #3771B5 #5C90CD #8BB0DC

Accessibility & contrast

On white

5.01

#3771B5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.19

#3771B5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3771B5

5.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3771B5	#FFFFFF	#000000	##FFFFFF
##3771B5	1.00	5.01	4.19	5.01
#FFFFFF	5.01	1.00	21.00	1.00
#000000	4.19	21.00	1.00	21.00
##FFFFFF	5.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5276B8

Deuteranopia (green-blind)

#406AB4

Tritanopia (blue-blind)

#00818A

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #3771b5;
/* rgb */ color: rgb(55, 113, 181);
/* oklch */ color: oklch(54.3% 0.123 254.0);

Tailwind

colors: {
  custom: {
    50: '#7c99cb',
    500: '#3771b5',
    950: '#000000',
  },
}

SCSS

$custom: #3771b5;
$custom-light: #7c99cb;
$custom-dark: #000000;

JSON

{
  "hex": "#3771b5",
  "rgb": {
    "r": 55,
    "g": 113,
    "b": 181
  },
  "hsl": {
    "h": 212.381,
    "s": 53.39,
    "l": 46.275
  },
  "oklch": {
    "l": 0.54299,
    "c": 0.12291,
    "h": 254
  },
  "luminance": 0.15959
}

Semantic roles & 50–950 ramp

primary

#3771B5

secondary

#C6A782

accent

#9A4BDD

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0D13

muted

#7C7E82

Preview Lab

Preview with #3771B5

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

Preview Lab → · Contrast checker → · Palette generator →