#2B33A9#2B33A9

#2B33A9 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 40.1% C 0.185 H 271.7°. Best body text is #FFFFFF at 9.77:1 contrast (WCAG AA passes).

Color values

HEX	#2B33A9
RGB	rgb(43, 51, 169)
HSL	hsl(236, 59%, 42%)
HSV	hsv(236, 75%, 66%)
CMYK	cmyk(74.6%, 69.8%, 0%, 33.7%)
CIE-LAB	lab(28.76, 37.80, -63.82)
CIE-LCH	lch(28.76, 74.17, 300.64°)
OKLab	oklab(40.14% 0.0054 -0.1846)
OKLCH	oklch(40.14% 0.185 271.7)
XYZ	xyz(9.3391, 5.7448, 38.1451)
Luminance	0.0575 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.84

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B33A9 #A9A12B

analogous

#2B72A9 #2B33A9 #622BA9

triadic

#2B33A9 #A92B33 #33A92B

tetradic

#2B33A9 #A92B72 #A9A12B #2BA962

square

#2B33A9 #A92B72 #A9A12B #2BA962

split-complementary

#2B33A9 #A9622B #72A92B

monochromatic

#121647 #1F2478 #2B33A9 #424BCF #737ADB

Accessibility & contrast

On white

9.77

#2B33A9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#2B33A9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B33A9

9.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B33A9	#FFFFFF	#000000	##FFFFFF
##2B33A9	1.00	9.77	2.15	9.77
#FFFFFF	9.77	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AAD

Deuteranopia (green-blind)

#003EA7

Tritanopia (blue-blind)

#00536A

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #2b33a9;
/* rgb */ color: rgb(43, 51, 169);
/* oklch */ color: oklch(40.1% 0.185 271.7);

Tailwind

colors: {
  custom: {
    50: '#786bc4',
    500: '#2b33a9',
    950: '#000000',
  },
}

SCSS

$custom: #2b33a9;
$custom-light: #786bc4;
$custom-dark: #000000;

JSON

{
  "hex": "#2b33a9",
  "rgb": {
    "r": 43,
    "g": 51,
    "b": 169
  },
  "hsl": {
    "h": 236.19,
    "s": 59.434,
    "l": 41.569
  },
  "oklch": {
    "l": 0.40143,
    "c": 0.18472,
    "h": 271.7
  },
  "luminance": 0.05746
}

Semantic roles & 50–950 ramp

primary

#2B33A9

secondary

#C3BD6D

accent

#D945E3

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #2B33A9

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

Preview Lab → · Contrast checker → · Palette generator →