#2B3FB7#2B3FB7

#2B3FB7 is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.5% C 0.189 H 269.2°. Best body text is #FFFFFF at 8.41:1 contrast (WCAG AA passes).

Color values

HEX	#2B3FB7
RGB	rgb(43, 63, 183)
HSL	hsl(231, 62%, 44%)
HSV	hsv(231, 77%, 72%)
CMYK	cmyk(76.5%, 65.6%, 0%, 28.2%)
CIE-LAB	lab(32.89, 35.26, -65.39)
CIE-LCH	lch(32.89, 74.29, 298.34°)
OKLab	oklab(43.55% -0.0026 -0.1892)
OKLCH	oklch(43.55% 0.189 269.2)
XYZ	xyz(11.3181, 7.4863, 45.6391)
Luminance	0.0749 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.80

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B3FB7 #B7A32B

analogous

#2B85B7 #2B3FB7 #5D2BB7

triadic

#2B3FB7 #B72B3F #3FB72B

tetradic

#2B3FB7 #B72B85 #B7A32B #2BB75D

square

#2B3FB7 #B72B85 #B7A32B #2BB75D

split-complementary

#2B3FB7 #B75D2B #85B72B

monochromatic

#141D54 #1F2E85 #2B3FB7 #4B5ED5 #7C8AE0

Accessibility & contrast

On white

8.41

#2B3FB7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#2B3FB7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B3FB7

8.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B3FB7	#FFFFFF	#000000	##FFFFFF
##2B3FB7	1.00	8.41	2.50	8.41
#FFFFFF	8.41	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054BB

Deuteranopia (green-blind)

#0047B5

Tritanopia (blue-blind)

#005F75

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #2b3fb7;
/* rgb */ color: rgb(43, 63, 183);
/* oklch */ color: oklch(43.5% 0.189 269.2);

Tailwind

colors: {
  custom: {
    50: '#7b74ce',
    500: '#2b3fb7',
    950: '#000000',
  },
}

SCSS

$custom: #2b3fb7;
$custom-light: #7b74ce;
$custom-dark: #000000;

JSON

{
  "hex": "#2b3fb7",
  "rgb": {
    "r": 43,
    "g": 63,
    "b": 183
  },
  "hsl": {
    "h": 231.429,
    "s": 61.947,
    "l": 44.314
  },
  "oklch": {
    "l": 0.43547,
    "c": 0.18919,
    "h": 269.2
  },
  "luminance": 0.07488
}

Semantic roles & 50–950 ramp

primary

#2B3FB7

secondary

#C9BD75

accent

#CE43E5

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #2B3FB7

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

Preview Lab → · Contrast checker → · Palette generator →