#3870BC#3870BC

#3870BC is a mid, vivid cyan. Relative luminance 0.161; OKLCH L 54.5% C 0.133 H 256.8°. Best body text is #FFFFFF at 4.99:1 contrast (WCAG AA passes).

Color values

HEX	#3870BC
RGB	rgb(56, 112, 188)
HSL	hsl(215, 54%, 48%)
HSV	hsv(215, 70%, 74%)
CMYK	cmyk(70.2%, 40.4%, 0%, 26.3%)
CIE-LAB	lab(47.05, 7.15, -45.38)
CIE-LCH	lch(47.05, 45.94, 278.95°)
OKLab	oklab(54.54% -0.0305 -0.1294)
OKLCH	oklch(54.54% 0.133 256.8)
XYZ	xyz(16.4989, 16.0582, 49.7972)
Luminance	0.1606 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3870BC #BC8438

analogous

#38B2BC #3870BC #4238BC

triadic

#3870BC #BC3870 #70BC38

tetradic

#3870BC #BC38B2 #BC8438 #38BC42

square

#3870BC #BC38B2 #BC8438 #38BC42

split-complementary

#3870BC #BC4238 #B2BC38

monochromatic

#1C385E #2A548D #3870BC #6190D0 #90B1DE

Accessibility & contrast

On white

4.99

#3870BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.21

#3870BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3870BC

4.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3870BC	#FFFFFF	#000000	##FFFFFF
##3870BC	1.00	4.99	4.21	4.99
#FFFFFF	4.99	1.00	21.00	1.00
#000000	4.21	21.00	1.00	21.00
##FFFFFF	4.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D76BF

Deuteranopia (green-blind)

#386ABA

Tritanopia (blue-blind)

#00828D

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #3870bc;
/* rgb */ color: rgb(56, 112, 188);
/* oklch */ color: oklch(54.5% 0.133 256.8);

Tailwind

colors: {
  custom: {
    50: '#7e98d0',
    500: '#3870bc',
    950: '#000000',
  },
}

SCSS

$custom: #3870bc;
$custom-light: #7e98d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3870bc",
  "rgb": {
    "r": 56,
    "g": 112,
    "b": 188
  },
  "hsl": {
    "h": 214.545,
    "s": 54.098,
    "l": 47.843
  },
  "oklch": {
    "l": 0.54538,
    "c": 0.13298,
    "h": 256.8
  },
  "luminance": 0.1606
}

Semantic roles & 50–950 ramp

primary

#3870BC

secondary

#C9AD87

accent

#9F4ADD

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #3870BC

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

Preview Lab → · Contrast checker → · Palette generator →