#3951BC#3951BC

#3951BC is a mid, vivid blue. Relative luminance 0.104; OKLCH L 48.0% C 0.170 H 269.4°. Best body text is #FFFFFF at 6.82:1 contrast (WCAG AA passes).

Color values

HEX	#3951BC
RGB	rgb(57, 81, 188)
HSL	hsl(229, 53%, 48%)
HSV	hsv(229, 70%, 74%)
CMYK	cmyk(69.7%, 56.9%, 0%, 26.3%)
CIE-LAB	lab(38.52, 27.17, -59.10)
CIE-LCH	lch(38.52, 65.05, 294.69°)
OKLab	oklab(48.04% -0.0019 -0.1703)
OKLCH	oklch(48.04% 0.17 269.4)
XYZ	xyz(13.7038, 10.3842, 48.8494)
Luminance	0.1039 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3951BC #BCA439

analogous

#3992BC #3951BC #6339BC

triadic

#3951BC #BC3951 #51BC39

tetradic

#3951BC #BC3992 #BCA439 #39BC63

square

#3951BC #BC3992 #BCA439 #39BC63

split-complementary

#3951BC #BC6339 #92BC39

monochromatic

#1D295E #2B3D8D #3951BC #6377D0 #92A0DE

Accessibility & contrast

On white

6.82

#3951BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.08

#3951BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3951BC

6.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3951BC	#FFFFFF	#000000	##FFFFFF
##3951BC	1.00	6.82	3.08	6.82
#FFFFFF	6.82	1.00	21.00	1.00
#000000	3.08	21.00	1.00	21.00
##FFFFFF	6.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0061C0

Deuteranopia (green-blind)

#0055BA

Tritanopia (blue-blind)

#006B7E

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #3951bc;
/* rgb */ color: rgb(57, 81, 188);
/* oklch */ color: oklch(48.0% 0.170 269.4);

Tailwind

colors: {
  custom: {
    50: '#8081d1',
    500: '#3951bc',
    950: '#000000',
  },
}

SCSS

$custom: #3951bc;
$custom-light: #8081d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3951bc",
  "rgb": {
    "r": 57,
    "g": 81,
    "b": 188
  },
  "hsl": {
    "h": 229.008,
    "s": 53.469,
    "l": 48.039
  },
  "oklch": {
    "l": 0.48037,
    "c": 0.17026,
    "h": 269.4
  },
  "luminance": 0.10386
}

Semantic roles & 50–950 ramp

primary

#3951BC

secondary

#C9BD88

accent

#C24BDD

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #3951BC

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

Preview Lab → · Contrast checker → · Palette generator →