#2B33A3#2B33A3

#2B33A3 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 39.5% C 0.177 H 272.0°. Best body text is #FFFFFF at 9.98:1 contrast (WCAG AA passes).

Color values

HEX	#2B33A3
RGB	rgb(43, 51, 163)
HSL	hsl(236, 58%, 40%)
HSV	hsv(236, 74%, 64%)
CMYK	cmyk(73.6%, 68.7%, 0%, 36.1%)
CIE-LAB	lab(28.18, 35.67, -61.15)
CIE-LCH	lch(28.18, 70.79, 300.25°)
OKLab	oklab(39.55% 0.0061 -0.1768)
OKLCH	oklch(39.55% 0.177 272)
XYZ	xyz(8.7887, 5.5247, 35.2464)
Luminance	0.0553 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B33A3 #A39B2B

analogous

#2B6FA3 #2B33A3 #5F2BA3

triadic

#2B33A3 #A32B33 #33A32B

tetradic

#2B33A3 #A32B6F #A39B2B #2BA35F

square

#2B33A3 #A32B6F #A39B2B #2BA35F

split-complementary

#2B33A3 #A35F2B #6FA32B

monochromatic

#111542 #1E2473 #2B33A3 #3F48CC #6F76D9

Accessibility & contrast

On white

9.98

#2B33A3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#2B33A3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B33A3

9.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B33A3	#FFFFFF	#000000	##FFFFFF
##2B33A3	1.00	9.98	2.11	9.98
#FFFFFF	9.98	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0048A6

Deuteranopia (green-blind)

#003DA1

Tritanopia (blue-blind)

#005167

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #2b33a3;
/* rgb */ color: rgb(43, 51, 163);
/* oklch */ color: oklch(39.5% 0.177 272.0);

Tailwind

colors: {
  custom: {
    50: '#776bbf',
    500: '#2b33a3',
    950: '#000000',
  },
}

SCSS

$custom: #2b33a3;
$custom-light: #776bbf;
$custom-dark: #000000;

JSON

{
  "hex": "#2b33a3",
  "rgb": {
    "r": 43,
    "g": 51,
    "b": 163
  },
  "hsl": {
    "h": 236,
    "s": 58.252,
    "l": 40.392
  },
  "oklch": {
    "l": 0.39548,
    "c": 0.17696,
    "h": 272
  },
  "luminance": 0.05526
}

Semantic roles & 50–950 ramp

primary

#2B33A3

secondary

#C0BA6A

accent

#D746E1

background

#F7F6FB

surface

#EEEBF7

border

#C9C6D0

text

#0A0612

muted

#7C7A81

Preview Lab

Preview with #2B33A3

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

Preview Lab → · Contrast checker → · Palette generator →