#311FAD#311FAD

#311FAD is a dark, highly saturated blue. Relative luminance 0.046; OKLCH L 38.2% C 0.207 H 276.0°. Best body text is #FFFFFF at 10.88:1 contrast (WCAG AA passes).

Color values

HEX#311FAD
RGBrgb(49, 31, 173)
HSLhsl(248, 70%, 40%)
HSVhsv(248, 82%, 68%)
CMYKcmyk(71.7%, 82.1%, 0%, 32.2%)
CIE-LABlab(25.71, 50.59, -71.25)
CIE-LCHlch(25.71, 87.38, 305.38°)
OKLaboklab(38.22% 0.0215 -0.2059)
OKLCHoklch(38.22% 0.207 276)
XYZxyz(9.2970, 4.6492, 39.9345)
Luminance0.0465 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#311FAD #9BAD1F
analogous
#1F54AD #311FAD #781FAD
triadic
#311FAD #AD311F #1FAD31
tetradic
#311FAD #AD1F54 #9BAD1F #1FAD78
square
#311FAD #AD1F54 #9BAD1F #1FAD78
split-complementary
#311FAD #AD781F #54AD1F
monochromatic
#140C45 #221679 #311FAD #452FDA #7463E3

Accessibility & contrast

On white

10.88
#311FAD on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.93
#311FAD on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311FAD
10.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##311FAD#FFFFFF#000000##FFFFFF
##311FAD1.0010.881.9310.88
#FFFFFF10.881.0021.001.00
#0000001.9321.001.0021.00
##FFFFFF10.881.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0043B1
Deuteranopia (green-blind)
#0037AB
Tritanopia (blue-blind)
#004C67
Achromatopsia (no color)
#3D3D3D

Design tokens & code

CSS
--color: #311fad;
/* rgb */ color: rgb(49, 31, 173);
/* oklch */ color: oklch(38.2% 0.207 276.0);
Tailwind
colors: {
  custom: {
    50: '#7d60c7',
    500: '#311fad',
    950: '#000000',
  },
}
SCSS
$custom: #311fad;
$custom-light: #7d60c7;
$custom-dark: #000000;
JSON
{
  "hex": "#311fad",
  "rgb": {
    "r": 49,
    "g": 31,
    "b": 173
  },
  "hsl": {
    "h": 247.606,
    "s": 69.608,
    "l": 40
  },
  "oklch": {
    "l": 0.38216,
    "c": 0.20706,
    "h": 276
  },
  "luminance": 0.0465
}

Semantic roles & 50–950 ramp

primary
#311FAD
secondary
#BBC860
accent
#EC3BD6
background
#F8F5FC
surface
#F0EAF8
border
#CBC6D1
text
#0B0513
muted
#7C7982

Preview Lab

Preview with #311FAD

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

Preview Lab → · Contrast checker → · Palette generator →

#311FAD Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva