#3771BE#3771BE

#3771BE is a mid, vivid cyan. Relative luminance 0.163; OKLCH L 54.8% C 0.135 H 256.4°. Best body text is #FFFFFF at 4.92:1 contrast (WCAG AA passes).

Color values

HEX	#3771BE
RGB	rgb(55, 113, 190)
HSL	hsl(214, 55%, 48%)
HSV	hsv(214, 71%, 75%)
CMYK	cmyk(71.1%, 40.5%, 0%, 25.5%)
CIE-LAB	lab(47.42, 7.10, -45.96)
CIE-LCH	lch(47.42, 46.51, 278.79°)
OKLab	oklab(54.85% -0.0317 -0.1311)
OKLCH	oklch(54.85% 0.135 256.4)
XYZ	xyz(16.7715, 16.3384, 50.9749)
Luminance	0.1634 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3771BE #BE8437

analogous

#37B4BE #3771BE #4037BE

triadic

#3771BE #BE3771 #71BE37

tetradic

#3771BE #BE37B4 #BE8437 #37BE40

square

#3771BE #BE37B4 #BE8437 #37BE40

split-complementary

#3771BE #BE4037 #B4BE37

monochromatic

#1C395F #29558F #3771BE #6191D1 #90B2DF

Accessibility & contrast

On white

4.92

#3771BE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.27

#3771BE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3771BE

4.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3771BE	#FFFFFF	#000000	##FFFFFF
##3771BE	1.00	4.92	4.27	4.92
#FFFFFF	4.92	1.00	21.00	1.00
#000000	4.27	21.00	1.00	21.00
##FFFFFF	4.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D77C1

Deuteranopia (green-blind)

#376BBC

Tritanopia (blue-blind)

#00838E

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #3771be;
/* rgb */ color: rgb(55, 113, 190);
/* oklch */ color: oklch(54.8% 0.135 256.4);

Tailwind

colors: {
  custom: {
    50: '#7e99d2',
    500: '#3771be',
    950: '#000000',
  },
}

SCSS

$custom: #3771be;
$custom-light: #7e99d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3771be",
  "rgb": {
    "r": 55,
    "g": 113,
    "b": 190
  },
  "hsl": {
    "h": 214.222,
    "s": 55.102,
    "l": 48.039
  },
  "oklch": {
    "l": 0.54848,
    "c": 0.1349,
    "h": 256.4
  },
  "luminance": 0.1634
}

Semantic roles & 50–950 ramp

primary

#3771BE

secondary

#CAAD87

accent

#9E49DE

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #3771BE

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

Preview Lab → · Contrast checker → · Palette generator →