#2133A8#2133A8

#2133A8 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 39.5% C 0.186 H 268.6°. Best body text is #FFFFFF at 9.98:1 contrast (WCAG AA passes).

Color values

HEX	#2133A8
RGB	rgb(33, 51, 168)
HSL	hsl(232, 67%, 39%)
HSV	hsv(232, 80%, 66%)
CMYK	cmyk(80.4%, 69.6%, 0%, 34.1%)
CIE-LAB	lab(28.16, 36.51, -64.22)
CIE-LCH	lch(28.16, 73.87, 299.61°)
OKLab	oklab(39.54% -0.0045 -0.186)
OKLCH	oklch(39.54% 0.186 268.6)
XYZ	xyz(8.8765, 5.5171, 37.6353)
Luminance	0.0552 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2133A8 #A89621

analogous

#2177A8 #2133A8 #5321A8

triadic

#2133A8 #A82133 #33A821

tetradic

#2133A8 #A82177 #A89621 #21A853

square

#2133A8 #A82177 #A89621 #21A853

split-complementary

#2133A8 #A85321 #77A821

monochromatic

#0D1442 #172375 #2133A8 #3046D6 #6374E0

Accessibility & contrast

On white

9.98

#2133A8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#2133A8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2133A8

9.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2133A8	#FFFFFF	#000000	##FFFFFF
##2133A8	1.00	9.98	2.10	9.98
#FFFFFF	9.98	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	9.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049AC

Deuteranopia (green-blind)

#003CA6

Tritanopia (blue-blind)

#005369

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #2133a8;
/* rgb */ color: rgb(33, 51, 168);
/* oklch */ color: oklch(39.5% 0.186 268.6);

Tailwind

colors: {
  custom: {
    50: '#756bc3',
    500: '#2133a8',
    950: '#000000',
  },
}

SCSS

$custom: #2133a8;
$custom-light: #756bc3;
$custom-dark: #000000;

JSON

{
  "hex": "#2133a8",
  "rgb": {
    "r": 33,
    "g": 51,
    "b": 168
  },
  "hsl": {
    "h": 232,
    "s": 67.164,
    "l": 39.412
  },
  "oklch": {
    "l": 0.39543,
    "c": 0.18608,
    "h": 268.6
  },
  "luminance": 0.05518
}

Semantic roles & 50–950 ramp

primary

#2133A8

secondary

#C5B85F

accent

#D33EEA

background

#F7F6FC

surface

#EEEBF8

border

#C9C6D1

text

#0A0613

muted

#7C7A82

Preview Lab

Preview with #2133A8

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

Preview Lab → · Contrast checker → · Palette generator →