#2B33A4#2B33A4

#2B33A4 is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.6% C 0.178 H 271.9°. Best body text is #FFFFFF at 9.94:1 contrast (WCAG AA passes).

Color values

HEX	#2B33A4
RGB	rgb(43, 51, 164)
HSL	hsl(236, 58%, 41%)
HSV	hsv(236, 74%, 64%)
CMYK	cmyk(73.8%, 68.9%, 0%, 35.7%)
CIE-LAB	lab(28.28, 36.02, -61.60)
CIE-LCH	lch(28.28, 71.36, 300.32°)
OKLab	oklab(39.65% 0.006 -0.1781)
OKLCH	oklch(39.65% 0.178 271.9)
XYZ	xyz(8.8787, 5.5607, 35.7202)
Luminance	0.0556 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B33A4 #A49C2B

analogous

#2B6FA4 #2B33A4 #5F2BA4

triadic

#2B33A4 #A42B33 #33A42B

tetradic

#2B33A4 #A42B6F #A49C2B #2BA45F

square

#2B33A4 #A42B6F #A49C2B #2BA45F

split-complementary

#2B33A4 #A45F2B #6FA42B

monochromatic

#121543 #1E2474 #2B33A4 #3F49CD #7077D9

Accessibility & contrast

On white

9.94

#2B33A4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#2B33A4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B33A4

9.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B33A4	#FFFFFF	#000000	##FFFFFF
##2B33A4	1.00	9.94	2.11	9.94
#FFFFFF	9.94	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0048A7

Deuteranopia (green-blind)

#003DA2

Tritanopia (blue-blind)

#005267

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #2b33a4;
/* rgb */ color: rgb(43, 51, 164);
/* oklch */ color: oklch(39.6% 0.178 271.9);

Tailwind

colors: {
  custom: {
    50: '#776bc0',
    500: '#2b33a4',
    950: '#000000',
  },
}

SCSS

$custom: #2b33a4;
$custom-light: #776bc0;
$custom-dark: #000000;

JSON

{
  "hex": "#2b33a4",
  "rgb": {
    "r": 43,
    "g": 51,
    "b": 164
  },
  "hsl": {
    "h": 236.033,
    "s": 58.454,
    "l": 40.588
  },
  "oklch": {
    "l": 0.39647,
    "c": 0.17825,
    "h": 271.9
  },
  "luminance": 0.05562
}

Semantic roles & 50–950 ramp

primary

#2B33A4

secondary

#C1BB6A

accent

#D746E2

background

#F7F6FB

surface

#EEEBF7

border

#C9C6D0

text

#0A0612

muted

#7C7A81

Preview Lab

Preview with #2B33A4

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

Preview Lab → · Contrast checker → · Palette generator →