#311C8F#311C8F

#311C8F is a dark, vivid violet. Relative luminance 0.035; OKLCH L 34.5% C 0.174 H 280.5°. Best body text is #FFFFFF at 12.40:1 contrast (WCAG AA passes).

Color values

HEX	#311C8F
RGB	rgb(49, 28, 143)
HSL	hsl(251, 67%, 34%)
HSV	hsv(251, 80%, 56%)
CMYK	cmyk(65.7%, 80.4%, 0%, 43.9%)
CIE-LAB	lab(21.82, 42.88, -59.35)
CIE-LCH	lch(21.82, 73.22, 305.85°)
OKLab	oklab(34.52% 0.0317 -0.1713)
OKLCH	oklch(34.52% 0.174 280.5)
XYZ	xyz(6.6382, 3.4661, 26.3005)
Luminance	0.0347 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311C8F #7A8F1C

analogous

#1C408F #311C8F #6A1C8F

triadic

#311C8F #8F311C #1C8F31

tetradic

#311C8F #8F1C40 #7A8F1C #1C8F6A

square

#311C8F #8F1C40 #7A8F1C #1C8F6A

split-complementary

#311C8F #8F6A1C #408F1C

monochromatic

#0E0829 #1F125C #311C8F #4326C2 #644ADC

Accessibility & contrast

On white

12.40

#311C8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#311C8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311C8F

12.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311C8F	#FFFFFF	#000000	##FFFFFF
##311C8F	1.00	12.40	1.69	12.40
#FFFFFF	12.40	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003892

Deuteranopia (green-blind)

#00308D

Tritanopia (blue-blind)

#003F55

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #311c8f;
/* rgb */ color: rgb(49, 28, 143);
/* oklch */ color: oklch(34.5% 0.174 280.5);

Tailwind

colors: {
  custom: {
    50: '#775cb1',
    500: '#311c8f',
    950: '#000000',
  },
}

SCSS

$custom: #311c8f;
$custom-light: #775cb1;
$custom-dark: #000000;

JSON

{
  "hex": "#311c8f",
  "rgb": {
    "r": 49,
    "g": 28,
    "b": 143
  },
  "hsl": {
    "h": 250.957,
    "s": 67.251,
    "l": 33.529
  },
  "oklch": {
    "l": 0.34521,
    "c": 0.17421,
    "h": 280.5
  },
  "luminance": 0.03467
}

Semantic roles & 50–950 ramp

primary

#311C8F

secondary

#A8BE49

accent

#EA3ECB

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0411

muted

#7C7980

Preview Lab

Preview with #311C8F

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

Preview Lab → · Contrast checker → · Palette generator →