#2133A4#2133A4

#2133A4 is a dark, vivid blue. Relative luminance 0.054; OKLCH L 39.1% C 0.181 H 268.7°. Best body text is #FFFFFF at 10.12:1 contrast (WCAG AA passes).

Color values

HEX	#2133A4
RGB	rgb(33, 51, 164)
HSL	hsl(232, 66%, 39%)
HSV	hsv(232, 80%, 64%)
CMYK	cmyk(79.9%, 68.9%, 0%, 35.7%)
CIE-LAB	lab(27.76, 35.04, -62.46)
CIE-LCH	lch(27.76, 71.62, 299.29°)
OKLab	oklab(39.14% -0.0042 -0.1809)
OKLCH	oklch(39.14% 0.181 268.7)
XYZ	xyz(8.5096, 5.3703, 35.7029)
Luminance	0.0537 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2133A4 #A49221

analogous

#2174A4 #2133A4 #5021A4

triadic

#2133A4 #A42133 #33A421

tetradic

#2133A4 #A42174 #A49221 #21A450

square

#2133A4 #A42174 #A49221 #21A450

split-complementary

#2133A4 #A45021 #74A421

monochromatic

#0C133E #172371 #2133A4 #2D44D5 #6072DF

Accessibility & contrast

On white

10.12

#2133A4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#2133A4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2133A4

10.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2133A4	#FFFFFF	#000000	##FFFFFF
##2133A4	1.00	10.12	2.07	10.12
#FFFFFF	10.12	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0048A7

Deuteranopia (green-blind)

#003BA2

Tritanopia (blue-blind)

#005267

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #2133a4;
/* rgb */ color: rgb(33, 51, 164);
/* oklch */ color: oklch(39.1% 0.181 268.7);

Tailwind

colors: {
  custom: {
    50: '#746bc0',
    500: '#2133a4',
    950: '#000000',
  },
}

SCSS

$custom: #2133a4;
$custom-light: #746bc0;
$custom-dark: #000000;

JSON

{
  "hex": "#2133a4",
  "rgb": {
    "r": 33,
    "g": 51,
    "b": 164
  },
  "hsl": {
    "h": 231.756,
    "s": 66.497,
    "l": 38.627
  },
  "oklch": {
    "l": 0.39137,
    "c": 0.18092,
    "h": 268.7
  },
  "luminance": 0.05371
}

Semantic roles & 50–950 ramp

primary

#2133A4

secondary

#C4B65D

accent

#D23EE9

background

#F7F6FC

surface

#EEEBF8

border

#C9C6D1

text

#0A0612

muted

#7C7A81

Preview Lab

Preview with #2133A4

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

Preview Lab → · Contrast checker → · Palette generator →