#3778AA#3778AA

#3778AA is a mid, moderate cyan. Relative luminance 0.171; OKLCH L 55.3% C 0.102 H 244.5°. Best body text is #FFFFFF at 4.74:1 contrast (WCAG AA passes).

Color values

HEX	#3778AA
RGB	rgb(55, 120, 170)
HSL	hsl(206, 51%, 44%)
HSV	hsv(206, 68%, 67%)
CMYK	cmyk(67.6%, 29.4%, 0%, 33.3%)
CIE-LAB	lab(48.44, -4.34, -32.74)
CIE-LCH	lch(48.44, 33.03, 262.45°)
OKLab	oklab(55.31% -0.0441 -0.0924)
OKLCH	oklch(55.31% 0.102 244.5)
XYZ	xyz(15.5450, 17.1458, 40.5127)
Luminance	0.1715 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3778AA #AA6937

analogous

#37AAA3 #3778AA #373FAA

triadic

#3778AA #AA3778 #78AA37

tetradic

#3778AA #A337AA #AA6937 #3FAA37

square

#3778AA #A337AA #AA6937 #3FAA37

split-complementary

#3778AA #AA373F #AAA337

monochromatic

#19374E #28577C #3778AA #5697C8 #84B3D7

Accessibility & contrast

On white

4.74

#3778AA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.43

#3778AA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3778AA

4.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3778AA	#FFFFFF	#000000	##FFFFFF
##3778AA	1.00	4.74	4.43	4.74
#FFFFFF	4.74	1.00	21.00	1.00
#000000	4.43	21.00	1.00	21.00
##FFFFFF	4.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6279AC

Deuteranopia (green-blind)

#526EA9

Tritanopia (blue-blind)

#00848A

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3778aa;
/* rgb */ color: rgb(55, 120, 170);
/* oklch */ color: oklch(55.3% 0.102 244.5);

Tailwind

colors: {
  custom: {
    50: '#7b9ec3',
    500: '#3778aa',
    950: '#000000',
  },
}

SCSS

$custom: #3778aa;
$custom-light: #7b9ec3;
$custom-dark: #000000;

JSON

{
  "hex": "#3778aa",
  "rgb": {
    "r": 55,
    "g": 120,
    "b": 170
  },
  "hsl": {
    "h": 206.087,
    "s": 51.111,
    "l": 44.118
  },
  "oklch": {
    "l": 0.55314,
    "c": 0.1024,
    "h": 244.5
  },
  "luminance": 0.17147
}

Semantic roles & 50–950 ramp

primary

#3778AA

secondary

#C19A7C

accent

#8B4DDB

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E12

muted

#7C7E81

Preview Lab

Preview with #3778AA

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

Preview Lab → · Contrast checker → · Palette generator →