#3951AA#3951AA

#3951AA is a mid, vivid blue. Relative luminance 0.097; OKLCH L 46.6% C 0.145 H 268.8°. Best body text is #FFFFFF at 7.16:1 contrast (WCAG AA passes).

Color values

HEX	#3951AA
RGB	rgb(57, 81, 170)
HSL	hsl(227, 50%, 45%)
HSV	hsv(227, 66%, 67%)
CMYK	cmyk(66.5%, 52.4%, 0%, 33.3%)
CIE-LAB	lab(37.22, 20.63, -50.60)
CIE-LCH	lch(37.22, 54.64, 292.18°)
OKLab	oklab(46.64% -0.003 -0.1452)
OKLCH	oklch(46.64% 0.145 268.8)
XYZ	xyz(11.8830, 9.6559, 39.2600)
Luminance	0.0966 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3951AA #AA9239

analogous

#398AAA #3951AA #5A39AA

triadic

#3951AA #AA3951 #51AA39

tetradic

#3951AA #AA398A #AA9239 #39AA5A

square

#3951AA #AA398A #AA9239 #39AA5A

split-complementary

#3951AA #AA5A39 #8AAA39

monochromatic

#1A254E #2A3B7C #3951AA #5970C7 #8798D7

Accessibility & contrast

On white

7.16

#3951AA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.93

#3951AA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3951AA

7.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3951AA	#FFFFFF	#000000	##FFFFFF
##3951AA	1.00	7.16	2.93	7.16
#FFFFFF	7.16	1.00	21.00	1.00
#000000	2.93	21.00	1.00	21.00
##FFFFFF	7.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A5DAD

Deuteranopia (green-blind)

#0053A8

Tritanopia (blue-blind)

#006675

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #3951aa;
/* rgb */ color: rgb(57, 81, 170);
/* oklch */ color: oklch(46.6% 0.145 268.8);

Tailwind

colors: {
  custom: {
    50: '#7c81c4',
    500: '#3951aa',
    950: '#000000',
  },
}

SCSS

$custom: #3951aa;
$custom-light: #7c81c4;
$custom-dark: #000000;

JSON

{
  "hex": "#3951aa",
  "rgb": {
    "r": 57,
    "g": 81,
    "b": 170
  },
  "hsl": {
    "h": 227.257,
    "s": 49.78,
    "l": 44.51
  },
  "oklch": {
    "l": 0.46641,
    "c": 0.14526,
    "h": 268.8
  },
  "luminance": 0.09657
}

Semantic roles & 50–950 ramp

primary

#3951AA

secondary

#C1B37E

accent

#BC4ED9

background

#F8F7FC

surface

#EFEEF8

border

#CAC9D1

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #3951AA

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

Preview Lab → · Contrast checker → · Palette generator →