#3878BF#3878BF

#3878BF is a mid, vivid cyan. Relative luminance 0.180; OKLCH L 56.5% C 0.128 H 253.0°. Best body text is #000000 at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#3878BF
RGB	rgb(56, 120, 191)
HSL	hsl(212, 55%, 48%)
HSV	hsv(212, 71%, 75%)
CMYK	cmyk(70.7%, 37.2%, 0%, 25.1%)
CIE-LAB	lab(49.54, 3.30, -43.16)
CIE-LCH	lch(49.54, 43.29, 274.37°)
OKLab	oklab(56.53% -0.0374 -0.1228)
OKLCH	oklch(56.53% 0.128 253)
XYZ	xyz(17.7478, 18.0334, 51.8256)
Luminance	0.1804 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3878BF #BF7F38

analogous

#38BBBF #3878BF #3C38BF

triadic

#3878BF #BF3878 #78BF38

tetradic

#3878BF #BF38BB #BF7F38 #38BF3C

square

#3878BF #BF38BB #BF7F38 #38BF3C

split-complementary

#3878BF #BF3C38 #BBBF38

monochromatic

#1C3D60 #2A5A90 #3878BF #6397D1 #92B7DF

Accessibility & contrast

On white

4.56

#3878BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.61

#3878BF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3878BF

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3878BF	#FFFFFF	#000000	##000000
##3878BF	1.00	4.56	4.61	4.61
#FFFFFF	4.56	1.00	21.00	21.00
#000000	4.61	21.00	1.00	1.00
##000000	4.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#587DC2

Deuteranopia (green-blind)

#4470BE

Tritanopia (blue-blind)

#008992

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #3878bf;
/* rgb */ color: rgb(56, 120, 191);
/* oklch */ color: oklch(56.5% 0.128 253.0);

Tailwind

colors: {
  custom: {
    50: '#7f9ed2',
    500: '#3878bf',
    950: '#000000',
  },
}

SCSS

$custom: #3878bf;
$custom-light: #7f9ed2;
$custom-dark: #000000;

JSON

{
  "hex": "#3878bf",
  "rgb": {
    "r": 56,
    "g": 120,
    "b": 191
  },
  "hsl": {
    "h": 211.556,
    "s": 54.656,
    "l": 48.431
  },
  "oklch": {
    "l": 0.56529,
    "c": 0.12838,
    "h": 253
  },
  "luminance": 0.18035
}

Semantic roles & 50–950 ramp

primary

#3878BF

secondary

#CAAB89

accent

#984ADE

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3878BF

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

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