#311EA6#311EA6

#311EA6 is a dark, vivid blue. Relative luminance 0.043; OKLCH L 37.3% C 0.200 H 276.9°. Best body text is #FFFFFF at 11.25:1 contrast (WCAG AA passes).

Color values

HEX	#311EA6
RGB	rgb(49, 30, 166)
HSL	hsl(248, 69%, 38%)
HSV	hsv(248, 82%, 65%)
CMYK	cmyk(70.5%, 81.9%, 0%, 34.9%)
CIE-LAB	lab(24.75, 48.94, -68.62)
CIE-LCH	lch(24.75, 84.29, 305.50°)
OKLab	oklab(37.31% 0.0239 -0.1983)
OKLCH	oklch(37.31% 0.2 276.9)
XYZ	xyz(8.6116, 4.3339, 36.4517)
Luminance	0.0433 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311EA6 #93A61E

analogous

#1E4FA6 #311EA6 #751EA6

triadic

#311EA6 #A6311E #1EA631

tetradic

#311EA6 #A61E4F #93A61E #1EA675

square

#311EA6 #A61E4F #93A61E #1EA675

split-complementary

#311EA6 #A6751E #4FA61E

monochromatic

#120B3E #221572 #311EA6 #4129D8 #6F5DE2

Accessibility & contrast

On white

11.25

#311EA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#311EA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311EA6

11.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311EA6	#FFFFFF	#000000	##FFFFFF
##311EA6	1.00	11.25	1.87	11.25
#FFFFFF	11.25	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0040AA

Deuteranopia (green-blind)

#0035A4

Tritanopia (blue-blind)

#004963

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #311ea6;
/* rgb */ color: rgb(49, 30, 166);
/* oklch */ color: oklch(37.3% 0.200 276.9);

Tailwind

colors: {
  custom: {
    50: '#7c5fc2',
    500: '#311ea6',
    950: '#000000',
  },
}

SCSS

$custom: #311ea6;
$custom-light: #7c5fc2;
$custom-dark: #000000;

JSON

{
  "hex": "#311ea6",
  "rgb": {
    "r": 49,
    "g": 30,
    "b": 166
  },
  "hsl": {
    "h": 248.382,
    "s": 69.388,
    "l": 38.431
  },
  "oklch": {
    "l": 0.37313,
    "c": 0.19974,
    "h": 276.9
  },
  "luminance": 0.04335
}

Semantic roles & 50–950 ramp

primary

#311EA6

secondary

#B7C65A

accent

#EC3CD4

background

#F8F5FC

surface

#EFE9F8

border

#CAC5D1

text

#0B0513

muted

#7C7982

Preview Lab

Preview with #311EA6

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

Preview Lab → · Contrast checker → · Palette generator →