#3878AD#3878AD

#3878AD is a mid, moderate cyan. Relative luminance 0.173; OKLCH L 55.5% C 0.106 H 246.3°. Best body text is #FFFFFF at 4.71:1 contrast (WCAG AA passes).

Color values

HEX	#3878AD
RGB	rgb(56, 120, 173)
HSL	hsl(207, 51%, 45%)
HSV	hsv(207, 68%, 68%)
CMYK	cmyk(67.6%, 30.6%, 0%, 32.2%)
CIE-LAB	lab(48.62, -3.12, -34.20)
CIE-LCH	lch(48.62, 34.34, 264.79°)
OKLab	oklab(55.51% -0.0425 -0.0966)
OKLCH	oklch(55.51% 0.106 246.3)
XYZ	xyz(15.8873, 17.2892, 42.0269)
Luminance	0.1729 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3878AD #AD6D38

analogous

#38ADA7 #3878AD #383EAD

triadic

#3878AD #AD3878 #78AD38

tetradic

#3878AD #A738AD #AD6D38 #3EAD38

square

#3878AD #A738AD #AD6D38 #3EAD38

split-complementary

#3878AD #AD383E #ADA738

monochromatic

#1A3851 #29587F #3878AD #5996C9 #87B4D8

Accessibility & contrast

On white

4.71

#3878AD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.46

#3878AD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3878AD

4.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3878AD	#FFFFFF	#000000	##FFFFFF
##3878AD	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)

#607AAF

Deuteranopia (green-blind)

#506EAC

Tritanopia (blue-blind)

#00858B

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3878ad;
/* rgb */ color: rgb(56, 120, 173);
/* oklch */ color: oklch(55.5% 0.106 246.3);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#3878ad",
  "rgb": {
    "r": 56,
    "g": 120,
    "b": 173
  },
  "hsl": {
    "h": 207.179,
    "s": 51.092,
    "l": 44.902
  },
  "oklch": {
    "l": 0.55512,
    "c": 0.10557,
    "h": 246.3
  },
  "luminance": 0.17291
}

Semantic roles & 50–950 ramp

primary

#3878AD

secondary

#C29D7F

accent

#8D4DDB

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #3878AD

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

Preview Lab → · Contrast checker → · Palette generator →