#3778C7#3778C7

#3778C7 is a mid, vivid cyan. Relative luminance 0.184; OKLCH L 57.0% C 0.139 H 254.9°. Best body text is #000000 at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#3778C7
RGB	rgb(55, 120, 199)
HSL	hsl(213, 57%, 50%)
HSV	hsv(213, 72%, 78%)
CMYK	cmyk(72.4%, 39.7%, 0%, 22%)
CIE-LAB	lab(49.94, 6.06, -47.11)
CIE-LCH	lch(49.94, 47.50, 277.33°)
OKLab	oklab(56.97% -0.0362 -0.1344)
OKLCH	oklch(56.97% 0.139 254.9)
XYZ	xyz(18.5970, 18.3666, 56.5868)
Luminance	0.1837 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3778C7 #C78637

analogous

#37C0C7 #3778C7 #3E37C7

triadic

#3778C7 #C73778 #78C737

tetradic

#3778C7 #C737C0 #C78637 #37C73E

square

#3778C7 #C737C0 #C78637 #37C73E

split-complementary

#3778C7 #C73E37 #C0C737

monochromatic

#1C3E67 #2A5B97 #3778C7 #6698D5 #96B9E2

Accessibility & contrast

On white

4.49

#3778C7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.67

#3778C7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3778C7

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3778C7	#FFFFFF	#000000	##000000
##3778C7	1.00	4.49	4.67	4.67
#FFFFFF	4.49	1.00	21.00	21.00
#000000	4.67	21.00	1.00	1.00
##000000	4.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#537ECA

Deuteranopia (green-blind)

#3C71C5

Tritanopia (blue-blind)

#008A96

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #3778c7;
/* rgb */ color: rgb(55, 120, 199);
/* oklch */ color: oklch(57.0% 0.139 254.9);

Tailwind

colors: {
  custom: {
    50: '#809ed8',
    500: '#3778c7',
    950: '#000000',
  },
}

SCSS

$custom: #3778c7;
$custom-light: #809ed8;
$custom-dark: #000000;

JSON

{
  "hex": "#3778c7",
  "rgb": {
    "r": 55,
    "g": 120,
    "b": 199
  },
  "hsl": {
    "h": 212.917,
    "s": 56.693,
    "l": 49.804
  },
  "oklch": {
    "l": 0.56974,
    "c": 0.13918,
    "h": 254.9
  },
  "luminance": 0.18369
}

Semantic roles & 50–950 ramp

primary

#3778C7

secondary

#CDB08C

accent

#9B48E0

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #3778C7

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

Preview Lab → · Contrast checker → · Palette generator →