#311EA1#311EA1

#311EA1 is a dark, vivid blue. Relative luminance 0.042; OKLCH L 36.8% C 0.194 H 277.5°. Best body text is #FFFFFF at 11.47:1 contrast (WCAG AA passes).

Color values

HEX	#311EA1
RGB	rgb(49, 30, 161)
HSL	hsl(249, 69%, 37%)
HSV	hsv(249, 81%, 63%)
CMYK	cmyk(69.6%, 81.4%, 0%, 36.9%)
CIE-LAB	lab(24.17, 47.43, -66.53)
CIE-LCH	lch(24.17, 81.70, 305.48°)
OKLab	oklab(36.75% 0.0254 -0.1922)
OKLCH	oklch(36.75% 0.194 277.5)
XYZ	xyz(8.1618, 4.1540, 34.0830)
Luminance	0.0415 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311EA1 #8EA11E

analogous

#1E4DA1 #311EA1 #721EA1

triadic

#311EA1 #A1311E #1EA131

tetradic

#311EA1 #A11E4D #8EA11E #1EA172

square

#311EA1 #A11E4D #8EA11E #1EA172

split-complementary

#311EA1 #A1721E #4DA11E

monochromatic

#120B3A #21146D #311EA1 #4128D5 #6D59E0

Accessibility & contrast

On white

11.47

#311EA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#311EA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311EA1

11.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311EA1	#FFFFFF	#000000	##FFFFFF
##311EA1	1.00	11.47	1.83	11.47
#FFFFFF	11.47	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003FA5

Deuteranopia (green-blind)

#00349F

Tritanopia (blue-blind)

#004760

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #311ea1;
/* rgb */ color: rgb(49, 30, 161);
/* oklch */ color: oklch(36.8% 0.194 277.5);

Tailwind

colors: {
  custom: {
    50: '#7b5ebe',
    500: '#311ea1',
    950: '#000000',
  },
}

SCSS

$custom: #311ea1;
$custom-light: #7b5ebe;
$custom-dark: #000000;

JSON

{
  "hex": "#311ea1",
  "rgb": {
    "r": 49,
    "g": 30,
    "b": 161
  },
  "hsl": {
    "h": 248.702,
    "s": 68.586,
    "l": 37.451
  },
  "oklch": {
    "l": 0.3675,
    "c": 0.1939,
    "h": 277.5
  },
  "luminance": 0.04155
}

Semantic roles & 50–950 ramp

primary

#311EA1

secondary

#B4C457

accent

#EB3CD2

background

#F8F5FB

surface

#EFE9F7

border

#CAC5D0

text

#0B0512

muted

#7C7981

Preview Lab

Preview with #311EA1

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

Preview Lab → · Contrast checker → · Palette generator →