#2B33B0#2B33B0

#2B33B0 is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.8% C 0.194 H 271.4°. Best body text is #FFFFFF at 9.53:1 contrast (WCAG AA passes).

Color values

HEX	#2B33B0
RGB	rgb(43, 51, 176)
HSL	hsl(236, 61%, 43%)
HSV	hsv(236, 76%, 69%)
CMYK	cmyk(75.6%, 71%, 0%, 31%)
CIE-LAB	lab(29.45, 40.25, -66.88)
CIE-LCH	lch(29.45, 78.05, 301.04°)
OKLab	oklab(40.85% 0.0046 -0.1936)
OKLCH	oklch(40.85% 0.194 271.4)
XYZ	xyz(10.0139, 6.0148, 41.6991)
Luminance	0.0602 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B33B0 #B0A82B

analogous

#2B75B0 #2B33B0 #652BB0

triadic

#2B33B0 #B02B33 #33B02B

tetradic

#2B33B0 #B02B75 #B0A82B #2BB065

square

#2B33B0 #B02B75 #B0A82B #2BB065

split-complementary

#2B33B0 #B0652B #75B02B

monochromatic

#13164E #1F257F #2B33B0 #464FD2 #787EDE

Accessibility & contrast

On white

9.53

#2B33B0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#2B33B0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B33B0

9.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B33B0	#FFFFFF	#000000	##FFFFFF
##2B33B0	1.00	9.53	2.20	9.53
#FFFFFF	9.53	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CB4

Deuteranopia (green-blind)

#003FAE

Tritanopia (blue-blind)

#00566E

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #2b33b0;
/* rgb */ color: rgb(43, 51, 176);
/* oklch */ color: oklch(40.8% 0.194 271.4);

Tailwind

colors: {
  custom: {
    50: '#7a6bc9',
    500: '#2b33b0',
    950: '#000000',
  },
}

SCSS

$custom: #2b33b0;
$custom-light: #7a6bc9;
$custom-dark: #000000;

JSON

{
  "hex": "#2b33b0",
  "rgb": {
    "r": 43,
    "g": 51,
    "b": 176
  },
  "hsl": {
    "h": 236.391,
    "s": 60.731,
    "l": 42.941
  },
  "oklch": {
    "l": 0.40849,
    "c": 0.19361,
    "h": 271.4
  },
  "luminance": 0.06016
}

Semantic roles & 50–950 ramp

primary

#2B33B0

secondary

#C6C171

accent

#DA44E4

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #2B33B0

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

Preview Lab → · Contrast checker → · Palette generator →