#3778AE#3778AE

#3778AE is a mid, moderate cyan. Relative luminance 0.173; OKLCH L 55.5% C 0.107 H 246.4°. Best body text is #FFFFFF at 4.71:1 contrast (WCAG AA passes).

Color values

HEX	#3778AE
RGB	rgb(55, 120, 174)
HSL	hsl(207, 52%, 45%)
HSV	hsv(207, 68%, 68%)
CMYK	cmyk(68.4%, 31%, 0%, 31.8%)
CIE-LAB	lab(48.64, -2.93, -34.76)
CIE-LCH	lch(48.64, 34.89, 265.18°)
OKLab	oklab(55.53% -0.0428 -0.0983)
OKLCH	oklch(55.53% 0.107 246.4)
XYZ	xyz(15.9291, 17.2995, 42.5358)
Luminance	0.1730 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3778AE #AE6D37

analogous

#37AEA9 #3778AE #373CAE

triadic

#3778AE #AE3778 #78AE37

tetradic

#3778AE #A937AE #AE6D37 #3CAE37

square

#3778AE #A937AE #AE6D37 #3CAE37

split-complementary

#3778AE #AE373C #AEA937

monochromatic

#1A3851 #28587F #3778AE #5896CA #86B4D9

Accessibility & contrast

On white

4.71

#3778AE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.46

#3778AE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3778AE

4.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3778AE	#FFFFFF	#000000	##FFFFFF
##3778AE	1.00	4.71	4.46	4.71
#FFFFFF	4.71	1.00	21.00	1.00
#000000	4.46	21.00	1.00	21.00
##FFFFFF	4.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#607AB0

Deuteranopia (green-blind)

#4F6EAD

Tritanopia (blue-blind)

#00858B

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3778ae;
/* rgb */ color: rgb(55, 120, 174);
/* oklch */ color: oklch(55.5% 0.107 246.4);

Tailwind

colors: {
  custom: {
    50: '#7b9ec6',
    500: '#3778ae',
    950: '#000000',
  },
}

SCSS

$custom: #3778ae;
$custom-light: #7b9ec6;
$custom-dark: #000000;

JSON

{
  "hex": "#3778ae",
  "rgb": {
    "r": 55,
    "g": 120,
    "b": 174
  },
  "hsl": {
    "h": 207.227,
    "s": 51.965,
    "l": 44.902
  },
  "oklch": {
    "l": 0.55528,
    "c": 0.10723,
    "h": 246.4
  },
  "luminance": 0.17301
}

Semantic roles & 50–950 ramp

primary

#3778AE

secondary

#C39D7E

accent

#8D4CDB

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #3778AE

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

Preview Lab → · Contrast checker → · Palette generator →