#3878B7#3878B7

#3878B7 is a mid, moderate cyan. Relative luminance 0.177; OKLCH L 56.1% C 0.118 H 250.4°. Best body text is #FFFFFF at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#3878B7
RGB	rgb(56, 120, 183)
HSL	hsl(210, 53%, 47%)
HSV	hsv(210, 69%, 72%)
CMYK	cmyk(69.4%, 34.4%, 0%, 28.2%)
CIE-LAB	lab(49.12, 0.43, -39.21)
CIE-LCH	lch(49.12, 39.22, 270.62°)
OKLab	oklab(56.07% -0.0395 -0.1113)
OKLCH	oklch(56.07% 0.118 250.4)
XYZ	xyz(16.8914, 17.6908, 47.3150)
Luminance	0.1769 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3878B7 #B77738

analogous

#38B7B7 #3878B7 #3838B7

triadic

#3878B7 #B73878 #78B738

tetradic

#3878B7 #B738B7 #B77738 #38B738

square

#3878B7 #B738B7 #B77738 #38B738

split-complementary

#3878B7 #B73838 #B7B738

monochromatic

#1B3B59 #2A5988 #3878B7 #5E97CE #8DB5DC

Accessibility & contrast

On white

4.63

#3878B7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.54

#3878B7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3878B7

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3878B7	#FFFFFF	#000000	##FFFFFF
##3878B7	1.00	4.63	4.54	4.63
#FFFFFF	4.63	1.00	21.00	1.00
#000000	4.54	21.00	1.00	21.00
##FFFFFF	4.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C7BBA

Deuteranopia (green-blind)

#4A6FB6

Tritanopia (blue-blind)

#00878F

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3878b7;
/* rgb */ color: rgb(56, 120, 183);
/* oklch */ color: oklch(56.1% 0.118 250.4);

Tailwind

colors: {
  custom: {
    50: '#7d9ecd',
    500: '#3878b7',
    950: '#000000',
  },
}

SCSS

$custom: #3878b7;
$custom-light: #7d9ecd;
$custom-dark: #000000;

JSON

{
  "hex": "#3878b7",
  "rgb": {
    "r": 56,
    "g": 120,
    "b": 183
  },
  "hsl": {
    "h": 209.764,
    "s": 53.138,
    "l": 46.863
  },
  "oklch": {
    "l": 0.56066,
    "c": 0.11808,
    "h": 250.4
  },
  "luminance": 0.17693
}

Semantic roles & 50–950 ramp

primary

#3878B7

secondary

#C7A584

accent

#934BDD

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3878B7

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

Preview Lab → · Contrast checker → · Palette generator →