#3771B4#3771B4

#3771B4 is a mid, vivid cyan. Relative luminance 0.159; OKLCH L 54.2% C 0.122 H 253.7°. Best body text is #FFFFFF at 5.02:1 contrast (WCAG AA passes).

Color values

HEX	#3771B4
RGB	rgb(55, 113, 180)
HSL	hsl(212, 53%, 46%)
HSV	hsv(212, 69%, 71%)
CMYK	cmyk(69.4%, 37.2%, 0%, 29.4%)
CIE-LAB	lab(46.86, 3.47, -41.05)
CIE-LCH	lch(46.86, 41.19, 274.83°)
OKLab	oklab(54.24% -0.0341 -0.1167)
OKLCH	oklch(54.24% 0.122 253.7)
XYZ	xyz(15.7159, 15.9161, 45.4150)
Luminance	0.1592 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3771B4 #B47A37

analogous

#37AFB4 #3771B4 #3B37B4

triadic

#3771B4 #B43771 #71B437

tetradic

#3771B4 #B437AF #B47A37 #37B43B

square

#3771B4 #B437AF #B47A37 #37B43B

split-complementary

#3771B4 #B43B37 #AFB437

monochromatic

#1A3656 #295485 #3771B4 #5B90CD #8AB0DB

Accessibility & contrast

On white

5.02

#3771B4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.18

#3771B4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3771B4

5.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3771B4	#FFFFFF	#000000	##FFFFFF
##3771B4	1.00	5.02	4.18	5.02
#FFFFFF	5.02	1.00	21.00	1.00
#000000	4.18	21.00	1.00	21.00
##FFFFFF	5.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5375B7

Deuteranopia (green-blind)

#416AB3

Tritanopia (blue-blind)

#00818A

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #3771b4;
/* rgb */ color: rgb(55, 113, 180);
/* oklch */ color: oklch(54.2% 0.122 253.7);

Tailwind

colors: {
  custom: {
    50: '#7c99cb',
    500: '#3771b4',
    950: '#000000',
  },
}

SCSS

$custom: #3771b4;
$custom-light: #7c99cb;
$custom-dark: #000000;

JSON

{
  "hex": "#3771b4",
  "rgb": {
    "r": 55,
    "g": 113,
    "b": 180
  },
  "hsl": {
    "h": 212.16,
    "s": 53.191,
    "l": 46.078
  },
  "oklch": {
    "l": 0.54239,
    "c": 0.12159,
    "h": 253.7
  },
  "luminance": 0.15918
}

Semantic roles & 50–950 ramp

primary

#3771B4

secondary

#C6A681

accent

#994BDD

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0D13

muted

#7C7E82

Preview Lab

Preview with #3771B4

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

Preview Lab → · Contrast checker → · Palette generator →