#3870C3#3870C3

#3870C3 is a mid, vivid blue. Relative luminance 0.164; OKLCH L 55.0% C 0.142 H 258.3°. Best body text is #FFFFFF at 4.91:1 contrast (WCAG AA passes).

Color values

HEX	#3870C3
RGB	rgb(56, 112, 195)
HSL	hsl(216, 55%, 49%)
HSV	hsv(216, 71%, 76%)
CMYK	cmyk(71.3%, 42.6%, 0%, 23.5%)
CIE-LAB	lab(47.45, 9.70, -48.78)
CIE-LCH	lch(47.45, 49.73, 281.25°)
OKLab	oklab(54.98% -0.029 -0.1394)
OKLCH	oklch(54.98% 0.142 258.3)
XYZ	xyz(17.2718, 16.3674, 53.8681)
Luminance	0.1637 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3870C3 #C38B38

analogous

#38B6C3 #3870C3 #4638C3

triadic

#3870C3 #C33870 #70C338

tetradic

#3870C3 #C338B6 #C38B38 #38C346

square

#3870C3 #C338B6 #C38B38 #38C346

split-complementary

#3870C3 #C34638 #B6C338

monochromatic

#1D3964 #2A5593 #3870C3 #6591D3 #95B3E1

Accessibility & contrast

On white

4.91

#3870C3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.27

#3870C3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3870C3

4.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3870C3	#FFFFFF	#000000	##FFFFFF
##3870C3	1.00	4.91	4.27	4.91
#FFFFFF	4.91	1.00	21.00	1.00
#000000	4.27	21.00	1.00	21.00
##FFFFFF	4.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4877C6

Deuteranopia (green-blind)

#306BC1

Tritanopia (blue-blind)

#008390

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #3870c3;
/* rgb */ color: rgb(56, 112, 195);
/* oklch */ color: oklch(55.0% 0.142 258.3);

Tailwind

colors: {
  custom: {
    50: '#7f98d6',
    500: '#3870c3',
    950: '#000000',
  },
}

SCSS

$custom: #3870c3;
$custom-light: #7f98d6;
$custom-dark: #000000;

JSON

{
  "hex": "#3870c3",
  "rgb": {
    "r": 56,
    "g": 112,
    "b": 195
  },
  "hsl": {
    "h": 215.827,
    "s": 55.378,
    "l": 49.216
  },
  "oklch": {
    "l": 0.54981,
    "c": 0.14239,
    "h": 258.3
  },
  "luminance": 0.16369
}

Semantic roles & 50–950 ramp

primary

#3870C3

secondary

#CCB28B

accent

#A249DF

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0B0D14

muted

#7C7E83

Preview Lab

Preview with #3870C3

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

Preview Lab → · Contrast checker → · Palette generator →