#3870CA#3870CA

#3870CA is a mid, vivid blue. Relative luminance 0.167; OKLCH L 55.4% C 0.152 H 259.5°. Best body text is #FFFFFF at 4.84:1 contrast (WCAG AA passes).

Color values

HEX	#3870CA
RGB	rgb(56, 112, 202)
HSL	hsl(217, 58%, 51%)
HSV	hsv(217, 72%, 79%)
CMYK	cmyk(72.3%, 44.6%, 0%, 20.8%)
CIE-LAB	lab(47.87, 12.27, -52.13)
CIE-LCH	lch(47.87, 53.56, 283.24°)
OKLab	oklab(55.44% -0.0276 -0.1493)
OKLCH	oklch(55.44% 0.152 259.5)
XYZ	xyz(18.0819, 16.6914, 58.1345)
Luminance	0.1669 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3870CA #CA9238

analogous

#38B9CA #3870CA #4938CA

triadic

#3870CA #CA3870 #70CA38

tetradic

#3870CA #CA38B9 #CA9238 #38CA49

square

#3870CA #CA38B9 #CA9238 #38CA49

split-complementary

#3870CA #CA4938 #B9CA38

monochromatic

#1D3B6B #29559B #3870CA #6893D7 #99B5E4

Accessibility & contrast

On white

4.84

#3870CA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.34

#3870CA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3870CA

4.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3870CA	#FFFFFF	#000000	##FFFFFF
##3870CA	1.00	4.84	4.34	4.84
#FFFFFF	4.84	1.00	21.00	1.00
#000000	4.34	21.00	1.00	21.00
##FFFFFF	4.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4379CD

Deuteranopia (green-blind)

#266BC8

Tritanopia (blue-blind)

#008593

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #3870ca;
/* rgb */ color: rgb(56, 112, 202);
/* oklch */ color: oklch(55.4% 0.152 259.5);

Tailwind

colors: {
  custom: {
    50: '#8198db',
    500: '#3870ca',
    950: '#000000',
  },
}

SCSS

$custom: #3870ca;
$custom-light: #8198db;
$custom-dark: #000000;

JSON

{
  "hex": "#3870ca",
  "rgb": {
    "r": 56,
    "g": 112,
    "b": 202
  },
  "hsl": {
    "h": 216.986,
    "s": 57.937,
    "l": 50.588
  },
  "oklch": {
    "l": 0.55436,
    "c": 0.1518,
    "h": 259.5
  },
  "luminance": 0.16693
}

Semantic roles & 50–950 ramp

primary

#3870CA

secondary

#CFB68E

accent

#A647E1

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3870CA

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

Preview Lab → · Contrast checker → · Palette generator →