#2B33A8#2B33A8

#2B33A8 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 40.0% C 0.183 H 271.7°. Best body text is #FFFFFF at 9.81:1 contrast (WCAG AA passes).

Color values

HEX	#2B33A8
RGB	rgb(43, 51, 168)
HSL	hsl(236, 59%, 41%)
HSV	hsv(236, 74%, 66%)
CMYK	cmyk(74.4%, 69.6%, 0%, 34.1%)
CIE-LAB	lab(28.66, 37.44, -63.38)
CIE-LCH	lch(28.66, 73.61, 300.57°)
OKLab	oklab(40.04% 0.0056 -0.1834)
OKLCH	oklch(40.04% 0.183 271.7)
XYZ	xyz(9.2456, 5.7074, 37.6526)
Luminance	0.0571 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.95

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B33A8 #A8A02B

analogous

#2B72A8 #2B33A8 #622BA8

triadic

#2B33A8 #A82B33 #33A82B

tetradic

#2B33A8 #A82B72 #A8A02B #2BA862

square

#2B33A8 #A82B72 #A8A02B #2BA862

split-complementary

#2B33A8 #A8622B #72A82B

monochromatic

#121547 #1F2477 #2B33A8 #424BCF #7279DB

Accessibility & contrast

On white

9.81

#2B33A8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#2B33A8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B33A8

9.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B33A8	#FFFFFF	#000000	##FFFFFF
##2B33A8	1.00	9.81	2.14	9.81
#FFFFFF	9.81	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AAC

Deuteranopia (green-blind)

#003EA6

Tritanopia (blue-blind)

#005369

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #2b33a8;
/* rgb */ color: rgb(43, 51, 168);
/* oklch */ color: oklch(40.0% 0.183 271.7);

Tailwind

colors: {
  custom: {
    50: '#786bc3',
    500: '#2b33a8',
    950: '#000000',
  },
}

SCSS

$custom: #2b33a8;
$custom-light: #786bc3;
$custom-dark: #000000;

JSON

{
  "hex": "#2b33a8",
  "rgb": {
    "r": 43,
    "g": 51,
    "b": 168
  },
  "hsl": {
    "h": 236.16,
    "s": 59.242,
    "l": 41.373
  },
  "oklch": {
    "l": 0.40043,
    "c": 0.18343,
    "h": 271.7
  },
  "luminance": 0.05708
}

Semantic roles & 50–950 ramp

primary

#2B33A8

secondary

#C2BD6C

accent

#D845E2

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #2B33A8

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

Preview Lab → · Contrast checker → · Palette generator →