#2B3BB1#2B3BB1

#2B3BB1 is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.3% C 0.186 H 270.0°. Best body text is #FFFFFF at 8.89:1 contrast (WCAG AA passes).

Color values

HEX	#2B3BB1
RGB	rgb(43, 59, 177)
HSL	hsl(233, 61%, 43%)
HSV	hsv(233, 76%, 69%)
CMYK	cmyk(75.7%, 66.7%, 0%, 30.6%)
CIE-LAB	lab(31.38, 35.63, -64.30)
CIE-LCH	lch(31.38, 73.51, 298.99°)
OKLab	oklab(42.28% 0.0001 -0.186)
OKLCH	oklch(42.28% 0.186 270)
XYZ	xyz(10.4933, 6.8147, 42.3488)
Luminance	0.0682 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.04

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B3BB1 #B1A12B

analogous

#2B7EB1 #2B3BB1 #5E2BB1

triadic

#2B3BB1 #B12B3B #3BB12B

tetradic

#2B3BB1 #B12B7E #B1A12B #2BB15E

square

#2B3BB1 #B12B7E #B1A12B #2BB15E

split-complementary

#2B3BB1 #B15E2B #7EB12B

monochromatic

#131A4F #1F2B80 #2B3BB1 #4758D2 #7884DE

Accessibility & contrast

On white

8.89

#2B3BB1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#2B3BB1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B3BB1

8.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B3BB1	#FFFFFF	#000000	##FFFFFF
##2B3BB1	1.00	8.89	2.36	8.89
#FFFFFF	8.89	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050B5

Deuteranopia (green-blind)

#0044AF

Tritanopia (blue-blind)

#005B71

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #2b3bb1;
/* rgb */ color: rgb(43, 59, 177);
/* oklch */ color: oklch(42.3% 0.186 270.0);

Tailwind

colors: {
  custom: {
    50: '#7a71c9',
    500: '#2b3bb1',
    950: '#000000',
  },
}

SCSS

$custom: #2b3bb1;
$custom-light: #7a71c9;
$custom-dark: #000000;

JSON

{
  "hex": "#2b3bb1",
  "rgb": {
    "r": 43,
    "g": 59,
    "b": 177
  },
  "hsl": {
    "h": 232.836,
    "s": 60.909,
    "l": 43.137
  },
  "oklch": {
    "l": 0.42277,
    "c": 0.18601,
    "h": 270
  },
  "luminance": 0.06816
}

Semantic roles & 50–950 ramp

primary

#2B3BB1

secondary

#C6BC72

accent

#D144E4

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #2B3BB1

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

Preview Lab → · Contrast checker → · Palette generator →