#3878B2#3878B2

#3878B2 is a mid, moderate cyan. Relative luminance 0.175; OKLCH L 55.8% C 0.112 H 248.5°. Best body text is #FFFFFF at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#3878B2
RGB	rgb(56, 120, 178)
HSL	hsl(209, 52%, 46%)
HSV	hsv(209, 69%, 70%)
CMYK	cmyk(68.5%, 32.6%, 0%, 30.2%)
CIE-LAB	lab(48.87, -1.35, -36.72)
CIE-LCH	lch(48.87, 36.74, 267.89°)
OKLab	oklab(55.79% -0.041 -0.104)
OKLCH	oklch(55.79% 0.112 248.5)
XYZ	xyz(16.3802, 17.4863, 44.6228)
Luminance	0.1749 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3878B2 #B27238

analogous

#38B2AF #3878B2 #383BB2

triadic

#3878B2 #B23878 #78B238

tetradic

#3878B2 #AF38B2 #B27238 #3BB238

square

#3878B2 #AF38B2 #B27238 #3BB238

split-complementary

#3878B2 #B2383B #B2AF38

monochromatic

#1B3955 #295983 #3878B2 #5C96CC #8AB4DA

Accessibility & contrast

On white

4.67

#3878B2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.50

#3878B2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3878B2

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3878B2	#FFFFFF	#000000	##FFFFFF
##3878B2	1.00	4.67	4.50	4.67
#FFFFFF	4.67	1.00	21.00	1.00
#000000	4.50	21.00	1.00	21.00
##FFFFFF	4.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E7BB4

Deuteranopia (green-blind)

#4D6FB1

Tritanopia (blue-blind)

#00868D

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3878b2;
/* rgb */ color: rgb(56, 120, 178);
/* oklch */ color: oklch(55.8% 0.112 248.5);

Tailwind

colors: {
  custom: {
    50: '#7c9ec9',
    500: '#3878b2',
    950: '#000000',
  },
}

SCSS

$custom: #3878b2;
$custom-light: #7c9ec9;
$custom-dark: #000000;

JSON

{
  "hex": "#3878b2",
  "rgb": {
    "r": 56,
    "g": 120,
    "b": 178
  },
  "hsl": {
    "h": 208.525,
    "s": 52.137,
    "l": 45.882
  },
  "oklch": {
    "l": 0.55785,
    "c": 0.11176,
    "h": 248.5
  },
  "luminance": 0.17488
}

Semantic roles & 50–950 ramp

primary

#3878B2

secondary

#C5A181

accent

#904CDC

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3878B2

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

Preview Lab → · Contrast checker → · Palette generator →