#3951CC#3951CC

#3951CC is a mid, vivid blue. Relative luminance 0.111; OKLCH L 49.4% C 0.192 H 269.5°. Best body text is #FFFFFF at 6.52:1 contrast (WCAG AA passes).

Color values

HEX	#3951CC
RGB	rgb(57, 81, 204)
HSL	hsl(230, 59%, 51%)
HSV	hsv(230, 72%, 80%)
CMYK	cmyk(72.1%, 60.3%, 0%, 20%)
CIE-LAB	lab(39.77, 32.93, -66.38)
CIE-LCH	lch(39.77, 74.10, 296.39°)
OKLab	oklab(49.36% -0.0017 -0.1916)
OKLCH	oklch(49.36% 0.192 269.5)
XYZ	xyz(15.5251, 11.1127, 58.4418)
Luminance	0.1111 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3951CC #CCB439

analogous

#399ACC #3951CC #6A39CC

triadic

#3951CC #CC3951 #51CC39

tetradic

#3951CC #CC399A #CCB439 #39CC6A

square

#3951CC #CC399A #CCB439 #39CC6A

split-complementary

#3951CC #CC6A39 #9ACC39

monochromatic

#1C2A6E #293C9F #3951CC #6A7CD9 #9AA7E5

Accessibility & contrast

On white

6.52

#3951CC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.22

#3951CC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3951CC

6.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3951CC	#FFFFFF	#000000	##FFFFFF
##3951CC	1.00	6.52	3.22	6.52
#FFFFFF	6.52	1.00	21.00	1.00
#000000	3.22	21.00	1.00	21.00
##FFFFFF	6.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0065D0

Deuteranopia (green-blind)

#0057CA

Tritanopia (blue-blind)

#007087

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #3951cc;
/* rgb */ color: rgb(57, 81, 204);
/* oklch */ color: oklch(49.4% 0.192 269.5);

Tailwind

colors: {
  custom: {
    50: '#8381dc',
    500: '#3951cc',
    950: '#000000',
  },
}

SCSS

$custom: #3951cc;
$custom-light: #8381dc;
$custom-dark: #000000;

JSON

{
  "hex": "#3951cc",
  "rgb": {
    "r": 57,
    "g": 81,
    "b": 204
  },
  "hsl": {
    "h": 230.204,
    "s": 59.036,
    "l": 51.176
  },
  "oklch": {
    "l": 0.49355,
    "c": 0.19164,
    "h": 269.5
  },
  "luminance": 0.11114
}

Semantic roles & 50–950 ramp

primary

#3951CC

secondary

#D1C690

accent

#C946E2

background

#F8F7FD

surface

#F0EEFB

border

#CBC9D4

text

#0C0A15

muted

#7D7C83

Preview Lab

Preview with #3951CC

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

Preview Lab → · Contrast checker → · Palette generator →