#3951AD#3951AD

#3951AD is a mid, vivid blue. Relative luminance 0.098; OKLCH L 46.9% C 0.149 H 268.9°. Best body text is #FFFFFF at 7.11:1 contrast (WCAG AA passes).

Color values

HEX	#3951AD
RGB	rgb(57, 81, 173)
HSL	hsl(228, 50%, 45%)
HSV	hsv(228, 67%, 68%)
CMYK	cmyk(67.1%, 53.2%, 0%, 32.2%)
CIE-LAB	lab(37.43, 21.72, -52.04)
CIE-LCH	lch(37.43, 56.39, 292.65°)
OKLab	oklab(46.87% -0.0027 -0.1495)
OKLCH	oklch(46.87% 0.15 268.9)
XYZ	xyz(12.1700, 9.7707, 40.7716)
Luminance	0.0977 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3951AD #AD9539

analogous

#398BAD #3951AD #5B39AD

triadic

#3951AD #AD3951 #51AD39

tetradic

#3951AD #AD398B #AD9539 #39AD5B

square

#3951AD #AD398B #AD9539 #39AD5B

split-complementary

#3951AD #AD5B39 #8BAD39

monochromatic

#1B2651 #2A3B7F #3951AD #5A71C9 #8899D8

Accessibility & contrast

On white

7.11

#3951AD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.95

#3951AD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3951AD

7.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3951AD	#FFFFFF	#000000	##FFFFFF
##3951AD	1.00	7.11	2.95	7.11
#FFFFFF	7.11	1.00	21.00	1.00
#000000	2.95	21.00	1.00	21.00
##FFFFFF	7.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#145EB0

Deuteranopia (green-blind)

#0053AB

Tritanopia (blue-blind)

#006777

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #3951ad;
/* rgb */ color: rgb(57, 81, 173);
/* oklch */ color: oklch(46.9% 0.149 268.9);

Tailwind

colors: {
  custom: {
    50: '#7d81c6',
    500: '#3951ad',
    950: '#000000',
  },
}

SCSS

$custom: #3951ad;
$custom-light: #7d81c6;
$custom-dark: #000000;

JSON

{
  "hex": "#3951ad",
  "rgb": {
    "r": 57,
    "g": 81,
    "b": 173
  },
  "hsl": {
    "h": 227.586,
    "s": 50.435,
    "l": 45.098
  },
  "oklch": {
    "l": 0.46867,
    "c": 0.1495,
    "h": 268.9
  },
  "luminance": 0.09772
}

Semantic roles & 50–950 ramp

primary

#3951AD

secondary

#C2B480

accent

#BD4EDA

background

#F8F7FC

surface

#EFEEF8

border

#CAC9D1

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #3951AD

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

Preview Lab → · Contrast checker → · Palette generator →