#2133A0#2133A0

#2133A0 is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.7% C 0.176 H 268.7°. Best body text is #FFFFFF at 10.26:1 contrast (WCAG AA passes).

Color values

HEX	#2133A0
RGB	rgb(33, 51, 160)
HSL	hsl(231, 66%, 38%)
HSV	hsv(231, 79%, 63%)
CMYK	cmyk(79.4%, 68.1%, 0%, 37.3%)
CIE-LAB	lab(27.38, 33.56, -60.68)
CIE-LCH	lch(27.38, 69.34, 298.95°)
OKLab	oklab(38.74% -0.0039 -0.1757)
OKLCH	oklch(38.74% 0.176 268.7)
XYZ	xyz(8.1540, 5.2281, 33.8303)
Luminance	0.0523 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2133A0 #A08E21

analogous

#2172A0 #2133A0 #4E21A0

triadic

#2133A0 #A02133 #33A021

tetradic

#2133A0 #A02172 #A08E21 #21A04E

square

#2133A0 #A02172 #A08E21 #21A04E

split-complementary

#2133A0 #A04E21 #72A021

monochromatic

#0C133B #17236D #2133A0 #2B43D3 #5E70DE

Accessibility & contrast

On white

10.26

#2133A0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#2133A0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2133A0

10.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2133A0	#FFFFFF	#000000	##FFFFFF
##2133A0	1.00	10.26	2.05	10.26
#FFFFFF	10.26	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047A3

Deuteranopia (green-blind)

#003B9E

Tritanopia (blue-blind)

#005165

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #2133a0;
/* rgb */ color: rgb(33, 51, 160);
/* oklch */ color: oklch(38.7% 0.176 268.7);

Tailwind

colors: {
  custom: {
    50: '#736bbd',
    500: '#2133a0',
    950: '#000000',
  },
}

SCSS

$custom: #2133a0;
$custom-light: #736bbd;
$custom-dark: #000000;

JSON

{
  "hex": "#2133a0",
  "rgb": {
    "r": 33,
    "g": 51,
    "b": 160
  },
  "hsl": {
    "h": 231.496,
    "s": 65.803,
    "l": 37.843
  },
  "oklch": {
    "l": 0.38735,
    "c": 0.17571,
    "h": 268.7
  },
  "luminance": 0.05229
}

Semantic roles & 50–950 ramp

primary

#2133A0

secondary

#C2B45B

accent

#D13FE9

background

#F7F6FB

surface

#EEEBF7

border

#C9C6D0

text

#090612

muted

#7B7A81

Preview Lab

Preview with #2133A0

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

Preview Lab → · Contrast checker → · Palette generator →