#311DA6#311DA6

#311DA6 is a dark, highly saturated blue. Relative luminance 0.043; OKLCH L 37.2% C 0.201 H 277.0°. Best body text is #FFFFFF at 11.31:1 contrast (WCAG AA passes).

Color values

HEX	#311DA6
RGB	rgb(49, 29, 166)
HSL	hsl(249, 70%, 38%)
HSV	hsv(249, 83%, 65%)
CMYK	cmyk(70.5%, 82.5%, 0%, 34.9%)
CIE-LAB	lab(24.59, 49.40, -68.88)
CIE-LCH	lch(24.59, 84.76, 305.65°)
OKLab	oklab(37.21% 0.0243 -0.199)
OKLCH	oklch(37.21% 0.201 277)
XYZ	xyz(8.5867, 4.2841, 36.4434)
Luminance	0.0428 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311DA6 #92A61D

analogous

#1D4DA6 #311DA6 #751DA6

triadic

#311DA6 #A6311D #1DA631

tetradic

#311DA6 #A61D4D #92A61D #1DA675

square

#311DA6 #A61D4D #92A61D #1DA675

split-complementary

#311DA6 #A6751D #4DA61D

monochromatic

#120B3E #221472 #311DA6 #4127D9 #6F5BE2

Accessibility & contrast

On white

11.31

#311DA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#311DA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311DA6

11.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311DA6	#FFFFFF	#000000	##FFFFFF
##311DA6	1.00	11.31	1.86	11.31
#FFFFFF	11.31	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0040AA

Deuteranopia (green-blind)

#0034A4

Tritanopia (blue-blind)

#004863

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #311da6;
/* rgb */ color: rgb(49, 29, 166);
/* oklch */ color: oklch(37.2% 0.201 277.0);

Tailwind

colors: {
  custom: {
    50: '#7c5ec2',
    500: '#311da6',
    950: '#000000',
  },
}

SCSS

$custom: #311da6;
$custom-light: #7c5ec2;
$custom-dark: #000000;

JSON

{
  "hex": "#311da6",
  "rgb": {
    "r": 49,
    "g": 29,
    "b": 166
  },
  "hsl": {
    "h": 248.759,
    "s": 70.256,
    "l": 38.235
  },
  "oklch": {
    "l": 0.37205,
    "c": 0.20052,
    "h": 277
  },
  "luminance": 0.04285
}

Semantic roles & 50–950 ramp

primary

#311DA6

secondary

#B6C659

accent

#ED3BD3

background

#F8F5FC

surface

#EFE9F8

border

#CAC5D1

text

#0B0513

muted

#7C7982

Preview Lab

Preview with #311DA6

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

Preview Lab → · Contrast checker → · Palette generator →