#3870BB#3870BB

#3870BB is a mid, vivid cyan. Relative luminance 0.160; OKLCH L 54.5% C 0.132 H 256.5°. Best body text is #FFFFFF at 5.00:1 contrast (WCAG AA passes).

Color values

HEX	#3870BB
RGB	rgb(56, 112, 187)
HSL	hsl(214, 54%, 48%)
HSV	hsv(214, 70%, 73%)
CMYK	cmyk(70.1%, 40.1%, 0%, 26.7%)
CIE-LAB	lab(46.99, 6.78, -44.89)
CIE-LCH	lch(46.99, 45.40, 278.59°)
OKLab	oklab(54.48% -0.0307 -0.128)
OKLCH	oklch(54.48% 0.132 256.5)
XYZ	xyz(16.3914, 16.0152, 49.2315)
Luminance	0.1602 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3870BB #BB8338

analogous

#38B1BB #3870BB #4238BB

triadic

#3870BB #BB3870 #70BB38

tetradic

#3870BB #BB38B1 #BB8338 #38BB42

square

#3870BB #BB38B1 #BB8338 #38BB42

split-complementary

#3870BB #BB4238 #B1BB38

monochromatic

#1C385D #2A548C #3870BB #6190D0 #90B1DE

Accessibility & contrast

On white

5.00

#3870BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.20

#3870BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3870BB

5.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3870BB	#FFFFFF	#000000	##FFFFFF
##3870BB	1.00	5.00	4.20	5.00
#FFFFFF	5.00	1.00	21.00	1.00
#000000	4.20	21.00	1.00	21.00
##FFFFFF	5.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D76BE

Deuteranopia (green-blind)

#396AB9

Tritanopia (blue-blind)

#00818C

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #3870bb;
/* rgb */ color: rgb(56, 112, 187);
/* oklch */ color: oklch(54.5% 0.132 256.5);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#3870bb",
  "rgb": {
    "r": 56,
    "g": 112,
    "b": 187
  },
  "hsl": {
    "h": 214.351,
    "s": 53.909,
    "l": 47.647
  },
  "oklch": {
    "l": 0.54476,
    "c": 0.13163,
    "h": 256.5
  },
  "luminance": 0.16017
}

Semantic roles & 50–950 ramp

primary

#3870BB

secondary

#C8AC86

accent

#9F4BDD

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #3870BB

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

Preview Lab → · Contrast checker → · Palette generator →