#3870B7#3870B7

#3870B7 is a mid, vivid cyan. Relative luminance 0.158; OKLCH L 54.2% C 0.126 H 255.5°. Best body text is #FFFFFF at 5.04:1 contrast (WCAG AA passes).

Color values

HEX	#3870B7
RGB	rgb(56, 112, 183)
HSL	hsl(214, 53%, 47%)
HSV	hsv(214, 69%, 72%)
CMYK	cmyk(69.4%, 38.8%, 0%, 28.2%)
CIE-LAB	lab(46.77, 5.33, -42.93)
CIE-LCH	lch(46.77, 43.26, 277.08°)
OKLab	oklab(54.23% -0.0316 -0.1222)
OKLCH	oklch(54.23% 0.126 255.5)
XYZ	xyz(15.9692, 15.8463, 47.0076)
Luminance	0.1585 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3870B7 #B77F38

analogous

#38B0B7 #3870B7 #3F38B7

triadic

#3870B7 #B73870 #70B738

tetradic

#3870B7 #B738B0 #B77F38 #38B73F

square

#3870B7 #B738B0 #B77F38 #38B73F

split-complementary

#3870B7 #B73F38 #B0B738

monochromatic

#1B3759 #2A5388 #3870B7 #5E90CE #8DB0DC

Accessibility & contrast

On white

5.04

#3870B7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.17

#3870B7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3870B7

5.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3870B7	#FFFFFF	#000000	##FFFFFF
##3870B7	1.00	5.04	4.17	5.04
#FFFFFF	5.04	1.00	21.00	1.00
#000000	4.17	21.00	1.00	21.00
##FFFFFF	5.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5075BA

Deuteranopia (green-blind)

#3D69B6

Tritanopia (blue-blind)

#00808A

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #3870b7;
/* rgb */ color: rgb(56, 112, 183);
/* oklch */ color: oklch(54.2% 0.126 255.5);

Tailwind

colors: {
  custom: {
    50: '#7d98cd',
    500: '#3870b7',
    950: '#000000',
  },
}

SCSS

$custom: #3870b7;
$custom-light: #7d98cd;
$custom-dark: #000000;

JSON

{
  "hex": "#3870b7",
  "rgb": {
    "r": 56,
    "g": 112,
    "b": 183
  },
  "hsl": {
    "h": 213.543,
    "s": 53.138,
    "l": 46.863
  },
  "oklch": {
    "l": 0.54231,
    "c": 0.12626,
    "h": 255.5
  },
  "luminance": 0.15848
}

Semantic roles & 50–950 ramp

primary

#3870B7

secondary

#C7A984

accent

#9C4BDD

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0D13

muted

#7C7E82

Preview Lab

Preview with #3870B7

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

Preview Lab → · Contrast checker → · Palette generator →