#3951BD#3951BD

#3951BD is a mid, vivid blue. Relative luminance 0.104; OKLCH L 48.1% C 0.172 H 269.4°. Best body text is #FFFFFF at 6.81:1 contrast (WCAG AA passes).

Color values

HEX	#3951BD
RGB	rgb(57, 81, 189)
HSL	hsl(229, 54%, 48%)
HSV	hsv(229, 70%, 74%)
CMYK	cmyk(69.8%, 57.1%, 0%, 25.9%)
CIE-LAB	lab(38.60, 27.53, -59.56)
CIE-LCH	lch(38.60, 65.62, 294.81°)
OKLab	oklab(48.12% -0.0018 -0.1716)
OKLCH	oklch(48.12% 0.172 269.4)
XYZ	xyz(13.8119, 10.4275, 49.4190)
Luminance	0.1043 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3951BD #BDA539

analogous

#3993BD #3951BD #6339BD

triadic

#3951BD #BD3951 #51BD39

tetradic

#3951BD #BD3993 #BDA539 #39BD63

square

#3951BD #BD3993 #BDA539 #39BD63

split-complementary

#3951BD #BD6339 #93BD39

monochromatic

#1D295F #2B3D8E #3951BD #6377D0 #92A0DE

Accessibility & contrast

On white

6.81

#3951BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.09

#3951BD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3951BD

6.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3951BD	#FFFFFF	#000000	##FFFFFF
##3951BD	1.00	6.81	3.09	6.81
#FFFFFF	6.81	1.00	21.00	1.00
#000000	3.09	21.00	1.00	21.00
##FFFFFF	6.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0061C1

Deuteranopia (green-blind)

#0055BB

Tritanopia (blue-blind)

#006C7F

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #3951bd;
/* rgb */ color: rgb(57, 81, 189);
/* oklch */ color: oklch(48.1% 0.172 269.4);

Tailwind

colors: {
  custom: {
    50: '#8081d2',
    500: '#3951bd',
    950: '#000000',
  },
}

SCSS

$custom: #3951bd;
$custom-light: #8081d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3951bd",
  "rgb": {
    "r": 57,
    "g": 81,
    "b": 189
  },
  "hsl": {
    "h": 229.091,
    "s": 53.659,
    "l": 48.235
  },
  "oklch": {
    "l": 0.48117,
    "c": 0.17162,
    "h": 269.4
  },
  "luminance": 0.10429
}

Semantic roles & 50–950 ramp

primary

#3951BD

secondary

#C9BD89

accent

#C24BDD

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0B0A14

muted

#7C7C83

Preview Lab

Preview with #3951BD

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

Preview Lab → · Contrast checker → · Palette generator →