#2B3FB8#2B3FB8

#2B3FB8 is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.6% C 0.190 H 269.2°. Best body text is #FFFFFF at 8.38:1 contrast (WCAG AA passes).

Color values

HEX	#2B3FB8
RGB	rgb(43, 63, 184)
HSL	hsl(231, 62%, 45%)
HSV	hsv(231, 77%, 72%)
CMYK	cmyk(76.6%, 65.8%, 0%, 27.8%)
CIE-LAB	lab(32.98, 35.62, -65.83)
CIE-LCH	lch(32.98, 74.85, 298.42°)
OKLab	oklab(43.64% -0.0027 -0.1905)
OKLCH	oklch(43.64% 0.19 269.2)
XYZ	xyz(11.4225, 7.5280, 46.1892)
Luminance	0.0753 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.71

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B3FB8 #B8A42B

analogous

#2B86B8 #2B3FB8 #5D2BB8

triadic

#2B3FB8 #B82B3F #3FB82B

tetradic

#2B3FB8 #B82B86 #B8A42B #2BB85D

square

#2B3FB8 #B82B86 #B8A42B #2BB85D

split-complementary

#2B3FB8 #B85D2B #86B82B

monochromatic

#141D55 #1F2E86 #2B3FB8 #4B5FD5 #7D8BE1

Accessibility & contrast

On white

8.38

#2B3FB8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#2B3FB8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B3FB8

8.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B3FB8	#FFFFFF	#000000	##FFFFFF
##2B3FB8	1.00	8.38	2.51	8.38
#FFFFFF	8.38	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054BC

Deuteranopia (green-blind)

#0047B6

Tritanopia (blue-blind)

#005F76

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #2b3fb8;
/* rgb */ color: rgb(43, 63, 184);
/* oklch */ color: oklch(43.6% 0.190 269.2);

Tailwind

colors: {
  custom: {
    50: '#7b74ce',
    500: '#2b3fb8',
    950: '#000000',
  },
}

SCSS

$custom: #2b3fb8;
$custom-light: #7b74ce;
$custom-dark: #000000;

JSON

{
  "hex": "#2b3fb8",
  "rgb": {
    "r": 43,
    "g": 63,
    "b": 184
  },
  "hsl": {
    "h": 231.489,
    "s": 62.115,
    "l": 44.51
  },
  "oklch": {
    "l": 0.43641,
    "c": 0.19048,
    "h": 269.2
  },
  "luminance": 0.07529
}

Semantic roles & 50–950 ramp

primary

#2B3FB8

secondary

#C9BD76

accent

#CE43E5

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #2B3FB8

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

Preview Lab → · Contrast checker → · Palette generator →