#3870C2#3870C2

#3870C2 is a mid, vivid blue. Relative luminance 0.163; OKLCH L 54.9% C 0.141 H 258.1°. Best body text is #FFFFFF at 4.92:1 contrast (WCAG AA passes).

Color values

HEX	#3870C2
RGB	rgb(56, 112, 194)
HSL	hsl(216, 55%, 49%)
HSV	hsv(216, 71%, 76%)
CMYK	cmyk(71.1%, 42.3%, 0%, 23.9%)
CIE-LAB	lab(47.39, 9.34, -48.30)
CIE-LCH	lch(47.39, 49.19, 280.94°)
OKLab	oklab(54.92% -0.0292 -0.138)
OKLCH	oklch(54.92% 0.141 258.1)
XYZ	xyz(17.1591, 16.3223, 53.2747)
Luminance	0.1632 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3870C2 #C28A38

analogous

#38B5C2 #3870C2 #4538C2

triadic

#3870C2 #C23870 #70C238

tetradic

#3870C2 #C238B5 #C28A38 #38C245

square

#3870C2 #C238B5 #C28A38 #38C245

split-complementary

#3870C2 #C24538 #B5C238

monochromatic

#1D3963 #2A5593 #3870C2 #6591D2 #94B3E0

Accessibility & contrast

On white

4.92

#3870C2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.26

#3870C2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3870C2

4.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3870C2	#FFFFFF	#000000	##FFFFFF
##3870C2	1.00	4.92	4.26	4.92
#FFFFFF	4.92	1.00	21.00	1.00
#000000	4.26	21.00	1.00	21.00
##FFFFFF	4.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4977C5

Deuteranopia (green-blind)

#316BC0

Tritanopia (blue-blind)

#00838F

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #3870c2;
/* rgb */ color: rgb(56, 112, 194);
/* oklch */ color: oklch(54.9% 0.141 258.1);

Tailwind

colors: {
  custom: {
    50: '#7f98d5',
    500: '#3870c2',
    950: '#000000',
  },
}

SCSS

$custom: #3870c2;
$custom-light: #7f98d5;
$custom-dark: #000000;

JSON

{
  "hex": "#3870c2",
  "rgb": {
    "r": 56,
    "g": 112,
    "b": 194
  },
  "hsl": {
    "h": 215.652,
    "s": 55.2,
    "l": 49.02
  },
  "oklch": {
    "l": 0.54916,
    "c": 0.14104,
    "h": 258.1
  },
  "luminance": 0.16324
}

Semantic roles & 50–950 ramp

primary

#3870C2

secondary

#CBB18A

accent

#A249DF

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0D14

muted

#7C7E83

Preview Lab

Preview with #3870C2

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

Preview Lab → · Contrast checker → · Palette generator →