#3878AC#3878AC

#3878AC is a mid, moderate cyan. Relative luminance 0.173; OKLCH L 55.5% C 0.104 H 245.8°. Best body text is #FFFFFF at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#3878AC
RGB	rgb(56, 120, 172)
HSL	hsl(207, 51%, 45%)
HSV	hsv(207, 67%, 67%)
CMYK	cmyk(67.4%, 30.2%, 0%, 32.5%)
CIE-LAB	lab(48.57, -3.47, -33.70)
CIE-LCH	lch(48.57, 33.87, 264.12°)
OKLab	oklab(55.46% -0.0428 -0.0952)
OKLCH	oklch(55.46% 0.104 245.8)
XYZ	xyz(15.7909, 17.2506, 41.5192)
Luminance	0.1725 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3878AC #AC6C38

analogous

#38ACA6 #3878AC #383EAC

triadic

#3878AC #AC3878 #78AC38

tetradic

#3878AC #A638AC #AC6C38 #3EAC38

square

#3878AC #A638AC #AC6C38 #3EAC38

split-complementary

#3878AC #AC383E #ACA638

monochromatic

#1A3850 #29587E #3878AC #5896C9 #87B3D8

Accessibility & contrast

On white

4.72

#3878AC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.45

#3878AC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3878AC

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3878AC	#FFFFFF	#000000	##FFFFFF
##3878AC	1.00	4.72	4.45	4.72
#FFFFFF	4.72	1.00	21.00	1.00
#000000	4.45	21.00	1.00	21.00
##FFFFFF	4.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#617AAE

Deuteranopia (green-blind)

#516EAB

Tritanopia (blue-blind)

#00848A

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3878ac;
/* rgb */ color: rgb(56, 120, 172);
/* oklch */ color: oklch(55.5% 0.104 245.8);

Tailwind

colors: {
  custom: {
    50: '#7b9ec5',
    500: '#3878ac',
    950: '#000000',
  },
}

SCSS

$custom: #3878ac;
$custom-light: #7b9ec5;
$custom-dark: #000000;

JSON

{
  "hex": "#3878ac",
  "rgb": {
    "r": 56,
    "g": 120,
    "b": 172
  },
  "hsl": {
    "h": 206.897,
    "s": 50.877,
    "l": 44.706
  },
  "oklch": {
    "l": 0.55459,
    "c": 0.10435,
    "h": 245.8
  },
  "luminance": 0.17252
}

Semantic roles & 50–950 ramp

primary

#3878AC

secondary

#C29C7E

accent

#8D4DDA

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #3878AC

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

Preview Lab → · Contrast checker → · Palette generator →