#3131AD#3131AD

#3131AD is a dark, vivid blue. Relative luminance 0.059; OKLCH L 40.6% C 0.190 H 273.9°. Best body text is #FFFFFF at 9.66:1 contrast (WCAG AA passes).

Color values

HEX	#3131AD
RGB	rgb(49, 49, 173)
HSL	hsl(240, 56%, 44%)
HSV	hsv(240, 72%, 68%)
CMYK	cmyk(71.7%, 71.7%, 0%, 32.2%)
CIE-LAB	lab(29.07, 41.02, -65.69)
CIE-LCH	lch(29.07, 77.45, 301.98°)
OKLab	oklab(40.58% 0.0129 -0.19)
OKLCH	oklch(40.58% 0.19 273.9)
XYZ	xyz(9.9052, 5.8658, 40.1373)
Luminance	0.0587 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3131AD #ADAD31

analogous

#316FAD #3131AD #6F31AD

triadic

#3131AD #AD3131 #31AD31

tetradic

#3131AD #AD316F #ADAD31 #31AD6F

square

#3131AD #AD316F #ADAD31 #31AD6F

split-complementary

#3131AD #AD6F31 #6FAD31

monochromatic

#16164E #23237D #3131AD #4E4ECD #7E7EDA

Accessibility & contrast

On white

9.66

#3131AD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#3131AD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3131AD

9.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3131AD	#FFFFFF	#000000	##FFFFFF
##3131AD	1.00	9.66	2.17	9.66
#FFFFFF	9.66	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AB1

Deuteranopia (green-blind)

#003FAB

Tritanopia (blue-blind)

#00546B

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #3131ad;
/* rgb */ color: rgb(49, 49, 173);
/* oklch */ color: oklch(40.6% 0.190 273.9);

Tailwind

colors: {
  custom: {
    50: '#7c6ac7',
    500: '#3131ad',
    950: '#000000',
  },
}

SCSS

$custom: #3131ad;
$custom-light: #7c6ac7;
$custom-dark: #000000;

JSON

{
  "hex": "#3131ad",
  "rgb": {
    "r": 49,
    "g": 49,
    "b": 173
  },
  "hsl": {
    "h": 240,
    "s": 55.856,
    "l": 43.529
  },
  "oklch": {
    "l": 0.40582,
    "c": 0.19041,
    "h": 273.9
  },
  "luminance": 0.05867
}

Semantic roles & 50–950 ramp

primary

#3131AD

secondary

#C3C377

accent

#DF49DF

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #3131AD

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

Preview Lab → · Contrast checker → · Palette generator →