#3770BA#3770BA

#3770BA is a mid, vivid cyan. Relative luminance 0.159; OKLCH L 54.4% C 0.131 H 256.0°. Best body text is #FFFFFF at 5.01:1 contrast (WCAG AA passes).

Color values

HEX	#3770BA
RGB	rgb(55, 112, 186)
HSL	hsl(214, 54%, 47%)
HSV	hsv(214, 70%, 73%)
CMYK	cmyk(70.4%, 39.8%, 0%, 27.1%)
CIE-LAB	lab(46.90, 6.27, -44.47)
CIE-LCH	lch(46.90, 44.91, 278.02°)
OKLab	oklab(54.37% -0.0316 -0.1268)
OKLCH	oklch(54.37% 0.131 256)
XYZ	xyz(16.2294, 15.9440, 48.6670)
Luminance	0.1595 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3770BA #BA8137

analogous

#37B2BA #3770BA #3F37BA

triadic

#3770BA #BA3770 #70BA37

tetradic

#3770BA #BA37B2 #BA8137 #37BA3F

square

#3770BA #BA37B2 #BA8137 #37BA3F

split-complementary

#3770BA #BA3F37 #B2BA37

monochromatic

#1B375C #29548B #3770BA #5F90D0 #8EB1DE

Accessibility & contrast

On white

5.01

#3770BA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.19

#3770BA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3770BA

5.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3770BA	#FFFFFF	#000000	##FFFFFF
##3770BA	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)

#4E76BD

Deuteranopia (green-blind)

#396AB9

Tritanopia (blue-blind)

#00818C

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #3770ba;
/* rgb */ color: rgb(55, 112, 186);
/* oklch */ color: oklch(54.4% 0.131 256.0);

Tailwind

colors: {
  custom: {
    50: '#7d98cf',
    500: '#3770ba',
    950: '#000000',
  },
}

SCSS

$custom: #3770ba;
$custom-light: #7d98cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3770ba",
  "rgb": {
    "r": 55,
    "g": 112,
    "b": 186
  },
  "hsl": {
    "h": 213.893,
    "s": 54.357,
    "l": 47.255
  },
  "oklch": {
    "l": 0.54375,
    "c": 0.13065,
    "h": 256
  },
  "luminance": 0.15946
}

Semantic roles & 50–950 ramp

primary

#3770BA

secondary

#C8AB85

accent

#9D4ADE

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #3770BA

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

Preview Lab → · Contrast checker → · Palette generator →