#2B3BAB#2B3BAB

#2B3BAB is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.7% C 0.178 H 270.2°. Best body text is #FFFFFF at 9.07:1 contrast (WCAG AA passes).

Color values

HEX	#2B3BAB
RGB	rgb(43, 59, 171)
HSL	hsl(233, 60%, 42%)
HSV	hsv(233, 75%, 67%)
CMYK	cmyk(74.9%, 65.5%, 0%, 32.9%)
CIE-LAB	lab(30.83, 33.45, -61.61)
CIE-LCH	lch(30.83, 70.11, 298.50°)
OKLab	oklab(41.71% 0.0005 -0.1782)
OKLCH	oklch(41.71% 0.178 270.2)
XYZ	xyz(9.9084, 6.5807, 39.2682)
Luminance	0.0658 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.66

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B3BAB #AB9B2B

analogous

#2B7BAB #2B3BAB #5B2BAB

triadic

#2B3BAB #AB2B3B #3BAB2B

tetradic

#2B3BAB #AB2B7B #AB9B2B #2BAB5B

square

#2B3BAB #AB2B7B #AB9B2B #2BAB5B

split-complementary

#2B3BAB #AB5B2B #7BAB2B

monochromatic

#121949 #1F2A7A #2B3BAB #4355D0 #7481DC

Accessibility & contrast

On white

9.07

#2B3BAB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#2B3BAB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B3BAB

9.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B3BAB	#FFFFFF	#000000	##FFFFFF
##2B3BAB	1.00	9.07	2.32	9.07
#FFFFFF	9.07	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FAF

Deuteranopia (green-blind)

#0043A9

Tritanopia (blue-blind)

#00596D

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #2b3bab;
/* rgb */ color: rgb(43, 59, 171);
/* oklch */ color: oklch(41.7% 0.178 270.2);

Tailwind

colors: {
  custom: {
    50: '#7871c5',
    500: '#2b3bab',
    950: '#000000',
  },
}

SCSS

$custom: #2b3bab;
$custom-light: #7871c5;
$custom-dark: #000000;

JSON

{
  "hex": "#2b3bab",
  "rgb": {
    "r": 43,
    "g": 59,
    "b": 171
  },
  "hsl": {
    "h": 232.5,
    "s": 59.813,
    "l": 41.961
  },
  "oklch": {
    "l": 0.41708,
    "c": 0.17816,
    "h": 270.2
  },
  "luminance": 0.06582
}

Semantic roles & 50–950 ramp

primary

#2B3BAB

secondary

#C4B96E

accent

#CF45E3

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #2B3BAB

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

Preview Lab → · Contrast checker → · Palette generator →