#3878CC#3878CC

#3878CC is a mid, vivid cyan. Relative luminance 0.186; OKLCH L 57.3% C 0.145 H 256.3°. Best body text is #000000 at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#3878CC
RGB	rgb(56, 120, 204)
HSL	hsl(214, 59%, 51%)
HSV	hsv(214, 73%, 80%)
CMYK	cmyk(72.5%, 41.2%, 0%, 20%)
CIE-LAB	lab(50.25, 8.02, -49.46)
CIE-LCH	lch(50.25, 50.11, 279.21°)
OKLab	oklab(57.32% -0.0344 -0.1413)
OKLCH	oklch(57.32% 0.145 256.3)
XYZ	xyz(19.2424, 18.6312, 59.6971)
Luminance	0.1863 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3878CC #CC8C38

analogous

#38C2CC #3878CC #4238CC

triadic

#3878CC #CC3878 #78CC38

tetradic

#3878CC #CC38C2 #CC8C38 #38CC42

square

#3878CC #CC38C2 #CC8C38 #38CC42

split-complementary

#3878CC #CC4238 #C2CC38

monochromatic

#1C3F6E #295B9E #3878CC #6999D8 #99BAE5

Accessibility & contrast

On white

4.44

#3878CC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.73

#3878CC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3878CC

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3878CC	#FFFFFF	#000000	##000000
##3878CC	1.00	4.44	4.73	4.73
#FFFFFF	4.44	1.00	21.00	21.00
#000000	4.73	21.00	1.00	1.00
##000000	4.73	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#507FCF

Deuteranopia (green-blind)

#3771CA

Tritanopia (blue-blind)

#008C98

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #3878cc;
/* rgb */ color: rgb(56, 120, 204);
/* oklch */ color: oklch(57.3% 0.145 256.3);

Tailwind

colors: {
  custom: {
    50: '#819edc',
    500: '#3878cc',
    950: '#000000',
  },
}

SCSS

$custom: #3878cc;
$custom-light: #819edc;
$custom-dark: #000000;

JSON

{
  "hex": "#3878cc",
  "rgb": {
    "r": 56,
    "g": 120,
    "b": 204
  },
  "hsl": {
    "h": 214.054,
    "s": 59.2,
    "l": 50.98
  },
  "oklch": {
    "l": 0.5732,
    "c": 0.14541,
    "h": 256.3
  },
  "luminance": 0.18633
}

Semantic roles & 50–950 ramp

primary

#3878CC

secondary

#D1B48F

accent

#9F45E2

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3878CC

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

Preview Lab → · Contrast checker → · Palette generator →