#4233B1#4233B1

#4233B1 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 42.5% C 0.189 H 280.0°. Best body text is #FFFFFF at 8.97:1 contrast (WCAG AA passes).

Color values

HEX#4233B1
RGBrgb(66, 51, 177)
HSLhsl(247, 55%, 45%)
HSVhsv(247, 71%, 69%)
CMYKcmyk(62.7%, 71.2%, 0%, 30.6%)
CIE-LABlab(31.11, 43.25, -64.68)
CIE-LCHlch(31.11, 77.81, 303.77°)
OKLaboklab(42.48% 0.0329 -0.1866)
OKLCHoklch(42.48% 0.189 280)
XYZxyz(11.3639, 6.6994, 42.2807)
Luminance0.0670 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#4233B1 #A2B133
analogous
#3363B1 #4233B1 #8133B1
triadic
#4233B1 #B14233 #33B142
tetradic
#4233B1 #B13363 #A2B133 #33B181
square
#4233B1 #B13363 #A2B133 #33B181
split-complementary
#4233B1 #B18133 #63B133
monochromatic
#1F1852 #302581 #4233B1 #6254CE #8E83DB

Accessibility & contrast

On white

8.97
#4233B1 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.34
#4233B1 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4233B1
8.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##4233B1#FFFFFF#000000##FFFFFF
##4233B11.008.972.348.97
#FFFFFF8.971.0021.001.00
#0000002.3421.001.0021.00
##FFFFFF8.971.0021.001.00

Color blindness preview

Protanopia (red-blind)
#004EB5
Deuteranopia (green-blind)
#0044AF
Tritanopia (blue-blind)
#00556E
Achromatopsia (no color)
#494949

Design tokens & code

CSS
--color: #4233b1;
/* rgb */ color: rgb(66, 51, 177);
/* oklch */ color: oklch(42.5% 0.189 280.0);
Tailwind
colors: {
  custom: {
    50: '#846cc9',
    500: '#4233b1',
    950: '#000000',
  },
}
SCSS
$custom: #4233b1;
$custom-light: #846cc9;
$custom-dark: #000000;
JSON
{
  "hex": "#4233b1",
  "rgb": {
    "r": 66,
    "g": 51,
    "b": 177
  },
  "hsl": {
    "h": 247.143,
    "s": 55.263,
    "l": 44.706
  },
  "oklch": {
    "l": 0.42476,
    "c": 0.18944,
    "h": 280
  },
  "luminance": 0.067
}

Semantic roles & 50–950 ramp

primary
#4233B1
secondary
#BCC57B
accent
#DF49CD
background
#F8F6FC
surface
#F0EBF8
border
#CBC6D1
text
#0C0713
muted
#7D7A82

Preview Lab

Preview with #4233B1

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

Preview Lab → · Contrast checker → · Palette generator →

#4233B1 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva