#331FAC#331FAC

#331FAC is a dark, highly saturated blue. Relative luminance 0.047; OKLCH L 38.2% C 0.205 H 276.9°. Best body text is #FFFFFF at 10.87:1 contrast (WCAG AA passes).

Color values

HEX	#331FAC
RGB	rgb(51, 31, 172)
HSL	hsl(249, 69%, 40%)
HSV	hsv(249, 82%, 67%)
CMYK	cmyk(70.3%, 82%, 0%, 32.5%)
CIE-LAB	lab(25.75, 50.45, -70.58)
CIE-LCH	lch(25.75, 86.75, 305.56°)
OKLab	oklab(38.25% 0.0246 -0.2039)
OKLCH	oklch(38.25% 0.205 276.9)
XYZ	xyz(9.2992, 4.6615, 39.4314)
Luminance	0.0466 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#331FAC #98AC1F

analogous

#1F51AC #331FAC #7A1FAC

triadic

#331FAC #AC331F #1FAC33

tetradic

#331FAC #AC1F51 #98AC1F #1FAC7A

square

#331FAC #AC1F51 #98AC1F #1FAC7A

split-complementary

#331FAC #AC7A1F #51AC1F

monochromatic

#140C44 #241678 #331FAC #472FD9 #7563E3

Accessibility & contrast

On white

10.87

#331FAC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#331FAC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #331FAC

10.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##331FAC	#FFFFFF	#000000	##FFFFFF
##331FAC	1.00	10.87	1.93	10.87
#FFFFFF	10.87	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0043B0

Deuteranopia (green-blind)

#0037AA

Tritanopia (blue-blind)

#004B67

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #331fac;
/* rgb */ color: rgb(51, 31, 172);
/* oklch */ color: oklch(38.2% 0.205 276.9);

Tailwind

colors: {
  custom: {
    50: '#7e60c6',
    500: '#331fac',
    950: '#000000',
  },
}

SCSS

$custom: #331fac;
$custom-light: #7e60c6;
$custom-dark: #000000;

JSON

{
  "hex": "#331fac",
  "rgb": {
    "r": 51,
    "g": 31,
    "b": 172
  },
  "hsl": {
    "h": 248.511,
    "s": 69.458,
    "l": 39.804
  },
  "oklch": {
    "l": 0.38247,
    "c": 0.20543,
    "h": 276.9
  },
  "luminance": 0.04662
}

Semantic roles & 50–950 ramp

primary

#331FAC

secondary

#B9C85F

accent

#EC3CD3

background

#F8F5FC

surface

#F0EAF8

border

#CBC6D1

text

#0B0513

muted

#7C7982

Preview Lab

Preview with #331FAC

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

Preview Lab → · Contrast checker → · Palette generator →