#311B9F#311B9F

#311B9F is a dark, vivid violet. Relative luminance 0.039; OKLCH L 36.2% C 0.194 H 278.1°. Best body text is #FFFFFF at 11.74:1 contrast (WCAG AA passes).

Color values

HEX	#311B9F
RGB	rgb(49, 27, 159)
HSL	hsl(250, 71%, 36%)
HSV	hsv(250, 83%, 62%)
CMYK	cmyk(69.2%, 83%, 0%, 37.6%)
CIE-LAB	lab(23.47, 48.21, -66.48)
CIE-LCH	lch(23.47, 82.12, 305.95°)
OKLab	oklab(36.2% 0.0273 -0.192)
OKLCH	oklch(36.2% 0.194 278.1)
XYZ	xyz(7.9145, 3.9393, 33.1374)
Luminance	0.0394 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311B9F #899F1B

analogous

#1B479F #311B9F #731B9F

triadic

#311B9F #9F311B #1B9F31

tetradic

#311B9F #9F1B47 #899F1B #1B9F73

square

#311B9F #9F1B47 #899F1B #1B9F73

split-complementary

#311B9F #9F731B #479F1B

monochromatic

#110936 #21126B #311B9F #4124D3 #6B53E2

Accessibility & contrast

On white

11.74

#311B9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#311B9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311B9F

11.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311B9F	#FFFFFF	#000000	##FFFFFF
##311B9F	1.00	11.74	1.79	11.74
#FFFFFF	11.74	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003DA3

Deuteranopia (green-blind)

#00329D

Tritanopia (blue-blind)

#00455E

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #311b9f;
/* rgb */ color: rgb(49, 27, 159);
/* oklch */ color: oklch(36.2% 0.194 278.1);

Tailwind

colors: {
  custom: {
    50: '#7a5dbd',
    500: '#311b9f',
    950: '#000000',
  },
}

SCSS

$custom: #311b9f;
$custom-light: #7a5dbd;
$custom-dark: #000000;

JSON

{
  "hex": "#311b9f",
  "rgb": {
    "r": 49,
    "g": 27,
    "b": 159
  },
  "hsl": {
    "h": 250,
    "s": 70.968,
    "l": 36.471
  },
  "oklch": {
    "l": 0.36196,
    "c": 0.19396,
    "h": 278.1
  },
  "luminance": 0.0394
}

Semantic roles & 50–950 ramp

primary

#311B9F

secondary

#B1C551

accent

#EE3AD0

background

#F8F5FB

surface

#EFE9F7

border

#CAC5D0

text

#0B0412

muted

#7C7981

Preview Lab

Preview with #311B9F

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

Preview Lab → · Contrast checker → · Palette generator →