#2B33AB#2B33AB

#2B33AB is a dark, vivid blue. Relative luminance 0.058; OKLCH L 40.3% C 0.187 H 271.6°. Best body text is #FFFFFF at 9.70:1 contrast (WCAG AA passes).

Color values

HEX	#2B33AB
RGB	rgb(43, 51, 171)
HSL	hsl(236, 60%, 42%)
HSV	hsv(236, 75%, 67%)
CMYK	cmyk(74.9%, 70.2%, 0%, 32.9%)
CIE-LAB	lab(28.95, 38.50, -64.70)
CIE-LCH	lch(28.95, 75.29, 300.76°)
OKLab	oklab(40.34% 0.0052 -0.1872)
OKLCH	oklch(40.34% 0.187 271.6)
XYZ	xyz(9.5283, 5.8205, 39.1415)
Luminance	0.0582 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.65

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B33AB #ABA32B

analogous

#2B73AB #2B33AB #632BAB

triadic

#2B33AB #AB2B33 #33AB2B

tetradic

#2B33AB #AB2B73 #ABA32B #2BAB63

square

#2B33AB #AB2B73 #ABA32B #2BAB63

split-complementary

#2B33AB #AB632B #73AB2B

monochromatic

#121649 #1F247A #2B33AB #434CD0 #747BDC

Accessibility & contrast

On white

9.70

#2B33AB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#2B33AB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B33AB

9.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B33AB	#FFFFFF	#000000	##FFFFFF
##2B33AB	1.00	9.70	2.16	9.70
#FFFFFF	9.70	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AAF

Deuteranopia (green-blind)

#003EA9

Tritanopia (blue-blind)

#00546B

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #2b33ab;
/* rgb */ color: rgb(43, 51, 171);
/* oklch */ color: oklch(40.3% 0.187 271.6);

Tailwind

colors: {
  custom: {
    50: '#796bc5',
    500: '#2b33ab',
    950: '#000000',
  },
}

SCSS

$custom: #2b33ab;
$custom-light: #796bc5;
$custom-dark: #000000;

JSON

{
  "hex": "#2b33ab",
  "rgb": {
    "r": 43,
    "g": 51,
    "b": 171
  },
  "hsl": {
    "h": 236.25,
    "s": 59.813,
    "l": 41.961
  },
  "oklch": {
    "l": 0.40343,
    "c": 0.18727,
    "h": 271.6
  },
  "luminance": 0.05822
}

Semantic roles & 50–950 ramp

primary

#2B33AB

secondary

#C4BE6E

accent

#D945E3

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #2B33AB

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

Preview Lab → · Contrast checker → · Palette generator →