#3878B8#3878B8

#3878B8 is a mid, moderate cyan. Relative luminance 0.177; OKLCH L 56.1% C 0.119 H 250.8°. Best body text is #FFFFFF at 4.62:1 contrast (WCAG AA passes).

Color values

HEX	#3878B8
RGB	rgb(56, 120, 184)
HSL	hsl(210, 53%, 47%)
HSV	hsv(210, 70%, 72%)
CMYK	cmyk(69.6%, 34.8%, 0%, 27.8%)
CIE-LAB	lab(49.17, 0.78, -39.71)
CIE-LCH	lch(49.17, 39.72, 271.13°)
OKLab	oklab(56.12% -0.0393 -0.1127)
OKLCH	oklch(56.12% 0.119 250.8)
XYZ	xyz(16.9959, 17.7326, 47.8651)
Luminance	0.1773 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3878B8 #B87838

analogous

#38B8B8 #3878B8 #3838B8

triadic

#3878B8 #B83878 #78B838

tetradic

#3878B8 #B838B8 #B87838 #38B838

square

#3878B8 #B838B8 #B87838 #38B838

split-complementary

#3878B8 #B83838 #B8B838

monochromatic

#1B3B5A #2A5989 #3878B8 #5F97CE #8EB5DD

Accessibility & contrast

On white

4.62

#3878B8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.55

#3878B8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3878B8

4.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3878B8	#FFFFFF	#000000	##FFFFFF
##3878B8	1.00	4.62	4.55	4.62
#FFFFFF	4.62	1.00	21.00	1.00
#000000	4.55	21.00	1.00	21.00
##FFFFFF	4.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B7BBB

Deuteranopia (green-blind)

#496FB7

Tritanopia (blue-blind)

#00878F

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3878b8;
/* rgb */ color: rgb(56, 120, 184);
/* oklch */ color: oklch(56.1% 0.119 250.8);

Tailwind

colors: {
  custom: {
    50: '#7d9ecd',
    500: '#3878b8',
    950: '#000000',
  },
}

SCSS

$custom: #3878b8;
$custom-light: #7d9ecd;
$custom-dark: #000000;

JSON

{
  "hex": "#3878b8",
  "rgb": {
    "r": 56,
    "g": 120,
    "b": 184
  },
  "hsl": {
    "h": 210,
    "s": 53.333,
    "l": 47.059
  },
  "oklch": {
    "l": 0.56123,
    "c": 0.11936,
    "h": 250.8
  },
  "luminance": 0.17734
}

Semantic roles & 50–950 ramp

primary

#3878B8

secondary

#C7A685

accent

#944BDD

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3878B8

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

Preview Lab → · Contrast checker → · Palette generator →