#231DB3#231DB3

#231DB3 is a dark, highly saturated blue. Relative luminance 0.045; OKLCH L 37.9% C 0.219 H 270.7°. Best body text is #FFFFFF at 11.06:1 contrast (WCAG AA passes).

Color values

HEX#231DB3
RGBrgb(35, 29, 179)
HSLhsl(242, 72%, 41%)
HSVhsv(242, 84%, 70%)
CMYKcmyk(80.4%, 83.8%, 0%, 29.8%)
CIE-LABlab(25.23, 52.41, -75.67)
CIE-LCHlch(25.23, 92.05, 304.71°)
OKLaboklab(37.85% 0.0027 -0.219)
OKLCHoklch(37.85% 0.219 270.7)
XYZxyz(9.2664, 4.4897, 43.0173)
Luminance0.0449 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#231DB3 #ADB31D
analogous
#1D62B3 #231DB3 #6E1DB3
triadic
#231DB3 #B3231D #1DB323
tetradic
#231DB3 #B31D62 #ADB31D #1DB36E
square
#231DB3 #B31D62 #ADB31D #1DB36E
split-complementary
#231DB3 #B36E1D #62B31D
monochromatic
#0E0C4A #19147E #231DB3 #3730DD #6A64E6

Accessibility & contrast

On white

11.06
#231DB3 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.90
#231DB3 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231DB3
11.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##231DB3#FFFFFF#000000##FFFFFF
##231DB31.0011.061.9011.06
#FFFFFF11.061.0021.001.00
#0000001.9021.001.0021.00
##FFFFFF11.061.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0043B7
Deuteranopia (green-blind)
#0034B1
Tritanopia (blue-blind)
#004E6A
Achromatopsia (no color)
#3C3C3C

Design tokens & code

CSS
--color: #231db3;
/* rgb */ color: rgb(35, 29, 179);
/* oklch */ color: oklch(37.9% 0.219 270.7);
Tailwind
colors: {
  custom: {
    50: '#7a5ecb',
    500: '#231db3',
    950: '#000000',
  },
}
SCSS
$custom: #231db3;
$custom-light: #7a5ecb;
$custom-dark: #000000;
JSON
{
  "hex": "#231db3",
  "rgb": {
    "r": 35,
    "g": 29,
    "b": 179
  },
  "hsl": {
    "h": 242.4,
    "s": 72.115,
    "l": 40.784
  },
  "oklch": {
    "l": 0.37852,
    "c": 0.219,
    "h": 270.7
  },
  "luminance": 0.04491
}

Semantic roles & 50–950 ramp

primary
#231DB3
secondary
#C7CB61
accent
#EF39E8
background
#F8F5FC
surface
#EFE9F9
border
#CAC5D2
text
#0B0514
muted
#7C7982

Preview Lab

Preview with #231DB3

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

Preview Lab → · Contrast checker → · Palette generator →

#231DB3 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva