#3778BA#3778BA

#3778BA is a mid, vivid cyan. Relative luminance 0.178; OKLCH L 56.2% C 0.122 H 251.2°. Best body text is #FFFFFF at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#3778BA
RGB	rgb(55, 120, 186)
HSL	hsl(210, 54%, 47%)
HSV	hsv(210, 70%, 73%)
CMYK	cmyk(70.4%, 35.5%, 0%, 27.1%)
CIE-LAB	lab(49.24, 1.35, -40.76)
CIE-LCH	lch(49.24, 40.78, 271.89°)
OKLab	oklab(56.2% -0.0394 -0.1158)
OKLCH	oklch(56.2% 0.122 251.2)
XYZ	xyz(17.1516, 17.7885, 48.9744)
Luminance	0.1779 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3778BA #BA7937

analogous

#37BABA #3778BA #3737BA

triadic

#3778BA #BA3778 #78BA37

tetradic

#3778BA #BA37BA #BA7937 #37BA37

square

#3778BA #BA37BA #BA7937 #37BA37

split-complementary

#3778BA #BA3737 #BABA37

monochromatic

#1B3B5C #295A8B #3778BA #5F97D0 #8EB5DE

Accessibility & contrast

On white

4.61

#3778BA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.56

#3778BA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3778BA

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3778BA	#FFFFFF	#000000	##FFFFFF
##3778BA	1.00	4.61	4.56	4.61
#FFFFFF	4.61	1.00	21.00	1.00
#000000	4.56	21.00	1.00	21.00
##FFFFFF	4.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A7CBD

Deuteranopia (green-blind)

#476FB9

Tritanopia (blue-blind)

#008890

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3778ba;
/* rgb */ color: rgb(55, 120, 186);
/* oklch */ color: oklch(56.2% 0.122 251.2);

Tailwind

colors: {
  custom: {
    50: '#7d9ecf',
    500: '#3778ba',
    950: '#000000',
  },
}

SCSS

$custom: #3778ba;
$custom-light: #7d9ecf;
$custom-dark: #000000;

JSON

{
  "hex": "#3778ba",
  "rgb": {
    "r": 55,
    "g": 120,
    "b": 186
  },
  "hsl": {
    "h": 210.229,
    "s": 54.357,
    "l": 47.255
  },
  "oklch": {
    "l": 0.562,
    "c": 0.1223,
    "h": 251.2
  },
  "luminance": 0.1779
}

Semantic roles & 50–950 ramp

primary

#3778BA

secondary

#C8A785

accent

#944ADE

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3778BA

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

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