#3873CC#3873CC

#3873CC is a mid, vivid blue. Relative luminance 0.175; OKLCH L 56.2% C 0.151 H 258.6°. Best body text is #FFFFFF at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#3873CC
RGB	rgb(56, 115, 204)
HSL	hsl(216, 59%, 51%)
HSV	hsv(216, 73%, 80%)
CMYK	cmyk(72.5%, 43.6%, 0%, 20%)
CIE-LAB	lab(48.83, 11.12, -51.73)
CIE-LCH	lch(48.83, 52.91, 282.14°)
OKLab	oklab(56.22% -0.0299 -0.148)
OKLCH	oklch(56.22% 0.151 258.6)
XYZ	xyz(18.6567, 17.4598, 59.5019)
Luminance	0.1746 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3873CC #CC9138

analogous

#38BDCC #3873CC #4738CC

triadic

#3873CC #CC3873 #73CC38

tetradic

#3873CC #CC38BD #CC9138 #38CC47

square

#3873CC #CC38BD #CC9138 #38CC47

split-complementary

#3873CC #CC4738 #BDCC38

monochromatic

#1C3D6E #29579E #3873CC #6995D8 #99B8E5

Accessibility & contrast

On white

4.67

#3873CC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.49

#3873CC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3873CC

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3873CC	#FFFFFF	#000000	##FFFFFF
##3873CC	1.00	4.67	4.49	4.67
#FFFFFF	4.67	1.00	21.00	1.00
#000000	4.49	21.00	1.00	21.00
##FFFFFF	4.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#477BCF

Deuteranopia (green-blind)

#2B6ECA

Tritanopia (blue-blind)

#008895

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3873cc;
/* rgb */ color: rgb(56, 115, 204);
/* oklch */ color: oklch(56.2% 0.151 258.6);

Tailwind

colors: {
  custom: {
    50: '#819adc',
    500: '#3873cc',
    950: '#000000',
  },
}

SCSS

$custom: #3873cc;
$custom-light: #819adc;
$custom-dark: #000000;

JSON

{
  "hex": "#3873cc",
  "rgb": {
    "r": 56,
    "g": 115,
    "b": 204
  },
  "hsl": {
    "h": 216.081,
    "s": 59.2,
    "l": 50.98
  },
  "oklch": {
    "l": 0.56221,
    "c": 0.15102,
    "h": 258.6
  },
  "luminance": 0.17462
}

Semantic roles & 50–950 ramp

primary

#3873CC

secondary

#D1B78F

accent

#A445E2

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3873CC

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

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