#3778C0#3778C0

#3778C0 is a mid, vivid cyan. Relative luminance 0.181; OKLCH L 56.6% C 0.130 H 253.1°. Best body text is #000000 at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#3778C0
RGB	rgb(55, 120, 192)
HSL	hsl(212, 55%, 48%)
HSV	hsv(212, 71%, 75%)
CMYK	cmyk(71.4%, 37.5%, 0%, 24.7%)
CIE-LAB	lab(49.56, 3.51, -43.71)
CIE-LCH	lch(49.56, 43.85, 274.60°)
OKLab	oklab(56.55% -0.0378 -0.1244)
OKLCH	oklch(56.55% 0.13 253.1)
XYZ	xyz(17.8029, 18.0490, 52.4045)
Luminance	0.1805 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3778C0 #C07F37

analogous

#37BCC0 #3778C0 #3A37C0

triadic

#3778C0 #C03778 #78C037

tetradic

#3778C0 #C037BC #C07F37 #37C03A

square

#3778C0 #C037BC #C07F37 #37C03A

split-complementary

#3778C0 #C03A37 #BCC037

monochromatic

#1C3D61 #295A90 #3778C0 #6297D2 #92B7E0

Accessibility & contrast

On white

4.56

#3778C0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.61

#3778C0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3778C0

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3778C0	#FFFFFF	#000000	##000000
##3778C0	1.00	4.56	4.61	4.61
#FFFFFF	4.56	1.00	21.00	21.00
#000000	4.61	21.00	1.00	1.00
##000000	4.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#577DC3

Deuteranopia (green-blind)

#4370BF

Tritanopia (blue-blind)

#008993

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #3778c0;
/* rgb */ color: rgb(55, 120, 192);
/* oklch */ color: oklch(56.6% 0.130 253.1);

Tailwind

colors: {
  custom: {
    50: '#7e9ed3',
    500: '#3778c0',
    950: '#000000',
  },
}

SCSS

$custom: #3778c0;
$custom-light: #7e9ed3;
$custom-dark: #000000;

JSON

{
  "hex": "#3778c0",
  "rgb": {
    "r": 55,
    "g": 120,
    "b": 192
  },
  "hsl": {
    "h": 211.533,
    "s": 55.466,
    "l": 48.431
  },
  "oklch": {
    "l": 0.56552,
    "c": 0.13005,
    "h": 253.1
  },
  "luminance": 0.18051
}

Semantic roles & 50–950 ramp

primary

#3778C0

secondary

#CBAB88

accent

#9849DF

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #3778C0

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

Preview Lab → · Contrast checker → · Palette generator →