#3974CC#3974CC

#3974CC is a mid, vivid blue. Relative luminance 0.177; OKLCH L 56.5% C 0.150 H 258.4°. Best body text is #FFFFFF at 4.62:1 contrast (WCAG AA passes).

Color values

HEX	#3974CC
RGB	rgb(57, 116, 204)
HSL	hsl(216, 59%, 51%)
HSV	hsv(216, 72%, 80%)
CMYK	cmyk(72.1%, 43.1%, 0%, 20%)
CIE-LAB	lab(49.15, 10.64, -51.22)
CIE-LCH	lch(49.15, 52.31, 281.73°)
OKLab	oklab(56.48% -0.0301 -0.1465)
OKLCH	oklch(56.48% 0.15 258.4)
XYZ	xyz(18.8279, 17.7182, 59.5427)
Luminance	0.1772 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3974CC #CC9139

analogous

#39BECC #3974CC #4739CC

triadic

#3974CC #CC3974 #74CC39

tetradic

#3974CC #CC39BE #CC9139 #39CC47

square

#3974CC #CC39BE #CC9139 #39CC47

split-complementary

#3974CC #CC4739 #BECC39

monochromatic

#1C3D6E #29589F #3974CC #6A96D9 #9AB8E5

Accessibility & contrast

On white

4.62

#3974CC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.54

#3974CC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3974CC

4.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3974CC	#FFFFFF	#000000	##FFFFFF
##3974CC	1.00	4.62	4.54	4.62
#FFFFFF	4.62	1.00	21.00	1.00
#000000	4.54	21.00	1.00	21.00
##FFFFFF	4.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#497CCF

Deuteranopia (green-blind)

#2E6FCA

Tritanopia (blue-blind)

#008996

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3974cc;
/* rgb */ color: rgb(57, 116, 204);
/* oklch */ color: oklch(56.5% 0.150 258.4);

Tailwind

colors: {
  custom: {
    50: '#819bdc',
    500: '#3974cc',
    950: '#000000',
  },
}

SCSS

$custom: #3974cc;
$custom-light: #819bdc;
$custom-dark: #000000;

JSON

{
  "hex": "#3974cc",
  "rgb": {
    "r": 57,
    "g": 116,
    "b": 204
  },
  "hsl": {
    "h": 215.918,
    "s": 59.036,
    "l": 51.176
  },
  "oklch": {
    "l": 0.56477,
    "c": 0.14955,
    "h": 258.4
  },
  "luminance": 0.1772
}

Semantic roles & 50–950 ramp

primary

#3974CC

secondary

#D1B790

accent

#A346E2

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3974CC

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

Preview Lab → · Contrast checker → · Palette generator →