#311F8B#311F8B

#311F8B is a dark, vivid violet. Relative luminance 0.035; OKLCH L 34.5% C 0.166 H 280.7°. Best body text is #FFFFFF at 12.36:1 contrast (WCAG AA passes).

Color values

HEX	#311F8B
RGB	rgb(49, 31, 139)
HSL	hsl(250, 64%, 33%)
HSV	hsv(250, 78%, 55%)
CMYK	cmyk(64.7%, 77.7%, 0%, 45.5%)
CIE-LAB	lab(21.93, 40.08, -56.67)
CIE-LCH	lch(21.93, 69.41, 305.27°)
OKLab	oklab(34.47% 0.031 -0.1635)
OKLCH	oklch(34.47% 0.166 280.7)
XYZ	xyz(6.4153, 3.4965, 24.7579)
Luminance	0.0350 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311F8B #798B1F

analogous

#1F438B #311F8B #671F8B

triadic

#311F8B #8B311F #1F8B31

tetradic

#311F8B #8B1F43 #798B1F #1F8B67

square

#311F8B #8B1F43 #798B1F #1F8B67

split-complementary

#311F8B #8B671F #438B1F

monochromatic

#0E0927 #1F1459 #311F8B #432ABD #644DD7

Accessibility & contrast

On white

12.36

#311F8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#311F8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311F8B

12.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311F8B	#FFFFFF	#000000	##FFFFFF
##311F8B	1.00	12.36	1.70	12.36
#FFFFFF	12.36	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00388E

Deuteranopia (green-blind)

#003089

Tritanopia (blue-blind)

#003E54

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #311f8b;
/* rgb */ color: rgb(49, 31, 139);
/* oklch */ color: oklch(34.5% 0.166 280.7);

Tailwind

colors: {
  custom: {
    50: '#765dae',
    500: '#311f8b',
    950: '#000000',
  },
}

SCSS

$custom: #311f8b;
$custom-light: #765dae;
$custom-dark: #000000;

JSON

{
  "hex": "#311f8b",
  "rgb": {
    "r": 49,
    "g": 31,
    "b": 139
  },
  "hsl": {
    "h": 250,
    "s": 63.529,
    "l": 33.333
  },
  "oklch": {
    "l": 0.34469,
    "c": 0.16645,
    "h": 280.7
  },
  "luminance": 0.03497
}

Semantic roles & 50–950 ramp

primary

#311F8B

secondary

#A8BA4C

accent

#E741CB

background

#F7F5FA

surface

#EEE9F4

border

#C9C5CE

text

#0A0410

muted

#7C797F

Preview Lab

Preview with #311F8B

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

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