#2133BC#2133BC

#2133BC is a dark, highly saturated blue. Relative luminance 0.063; OKLCH L 41.6% C 0.211 H 268.2°. Best body text is #FFFFFF at 9.27:1 contrast (WCAG AA passes).

Color values

HEX#2133BC
RGBrgb(33, 51, 188)
HSLhsl(233, 70%, 43%)
HSVhsv(233, 82%, 74%)
CMYKcmyk(82.4%, 72.9%, 0%, 26.3%)
CIE-LABlab(30.21, 43.64, -72.77)
CIE-LCHlch(30.21, 84.86, 300.95°)
OKLaboklab(41.63% -0.0066 -0.2109)
OKLCHoklch(41.63% 0.211 268.2)
XYZxyz(10.8850, 6.3205, 48.2135)
Luminance0.0632 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#2133BC #BCAA21
analogous
#2180BC #2133BC #5C21BC
triadic
#2133BC #BC2133 #33BC21
tetradic
#2133BC #BC2180 #BCAA21 #21BC5C
square
#2133BC #BC2180 #BCAA21 #21BC5C
split-complementary
#2133BC #BC5C21 #80BC21
monochromatic
#0F1754 #182588 #2133BC #3D50DD #717FE6

Accessibility & contrast

On white

9.27
#2133BC on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.26
#2133BC on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2133BC
9.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##2133BC#FFFFFF#000000##FFFFFF
##2133BC1.009.272.269.27
#FFFFFF9.271.0021.001.00
#0000002.2621.001.0021.00
##FFFFFF9.271.0021.001.00

Color blindness preview

Protanopia (red-blind)
#004FC0
Deuteranopia (green-blind)
#003FBA
Tritanopia (blue-blind)
#005B74
Achromatopsia (no color)
#474747

Design tokens & code

CSS
--color: #2133bc;
/* rgb */ color: rgb(33, 51, 188);
/* oklch */ color: oklch(41.6% 0.211 268.2);
Tailwind
colors: {
  custom: {
    50: '#7a6cd1',
    500: '#2133bc',
    950: '#000000',
  },
}
SCSS
$custom: #2133bc;
$custom-light: #7a6cd1;
$custom-dark: #000000;
JSON
{
  "hex": "#2133bc",
  "rgb": {
    "r": 33,
    "g": 51,
    "b": 188
  },
  "hsl": {
    "h": 233.032,
    "s": 70.136,
    "l": 43.333
  },
  "oklch": {
    "l": 0.4163,
    "c": 0.21101,
    "h": 268.2
  },
  "luminance": 0.06322
}

Semantic roles & 50–950 ramp

primary
#2133BC
secondary
#CDC26C
accent
#D83BED
background
#F8F6FD
surface
#EFEBFA
border
#CAC6D3
text
#0B0714
muted
#7C7A83

Preview Lab

Preview with #2133BC

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

Preview Lab → · Contrast checker → · Palette generator →

#2133BC Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva