#2B3FA3#2B3FA3

#2B3FA3 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 41.7% C 0.163 H 269.3°. Best body text is #FFFFFF at 8.96:1 contrast (WCAG AA passes).

Color values

HEX	#2B3FA3
RGB	rgb(43, 63, 163)
HSL	hsl(230, 58%, 40%)
HSV	hsv(230, 74%, 64%)
CMYK	cmyk(73.6%, 61.3%, 0%, 36.1%)
CIE-LAB	lab(31.14, 27.88, -56.30)
CIE-LCH	lch(31.14, 62.83, 296.35°)
OKLab	oklab(41.72% -0.0019 -0.1625)
OKLCH	oklch(41.72% 0.163 269.3)
XYZ	xyz(9.3824, 6.7120, 35.4443)
Luminance	0.0671 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B3FA3 #A38F2B

analogous

#2B7BA3 #2B3FA3 #532BA3

triadic

#2B3FA3 #A32B3F #3FA32B

tetradic

#2B3FA3 #A32B7B #A38F2B #2BA353

square

#2B3FA3 #A32B7B #A38F2B #2BA353

split-complementary

#2B3FA3 #A3532B #7BA32B

monochromatic

#111A42 #1E2C73 #2B3FA3 #3F56CC #6F81D9

Accessibility & contrast

On white

8.96

#2B3FA3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.34

#2B3FA3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B3FA3

8.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B3FA3	#FFFFFF	#000000	##FFFFFF
##2B3FA3	1.00	8.96	2.34	8.96
#FFFFFF	8.96	1.00	21.00	1.00
#000000	2.34	21.00	1.00	21.00
##FFFFFF	8.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FA6

Deuteranopia (green-blind)

#0044A1

Tritanopia (blue-blind)

#00586B

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #2b3fa3;
/* rgb */ color: rgb(43, 63, 163);
/* oklch */ color: oklch(41.7% 0.163 269.3);

Tailwind

colors: {
  custom: {
    50: '#7673bf',
    500: '#2b3fa3',
    950: '#000000',
  },
}

SCSS

$custom: #2b3fa3;
$custom-light: #7673bf;
$custom-dark: #000000;

JSON

{
  "hex": "#2b3fa3",
  "rgb": {
    "r": 43,
    "g": 63,
    "b": 163
  },
  "hsl": {
    "h": 230,
    "s": 58.252,
    "l": 40.392
  },
  "oklch": {
    "l": 0.41721,
    "c": 0.16256,
    "h": 269.3
  },
  "luminance": 0.06713
}

Semantic roles & 50–950 ramp

primary

#2B3FA3

secondary

#C0B26A

accent

#C846E1

background

#F7F7FB

surface

#EEEDF7

border

#C9C8D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #2B3FA3

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

Preview Lab → · Contrast checker → · Palette generator →