#2B3FA0#2B3FA0

#2B3FA0 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.5% C 0.158 H 269.3°. Best body text is #FFFFFF at 9.05:1 contrast (WCAG AA passes).

Color values

HEX	#2B3FA0
RGB	rgb(43, 63, 160)
HSL	hsl(230, 58%, 40%)
HSV	hsv(230, 73%, 63%)
CMYK	cmyk(73.1%, 60.6%, 0%, 37.3%)
CIE-LAB	lab(30.89, 26.76, -54.90)
CIE-LCH	lch(30.89, 61.07, 295.99°)
OKLab	oklab(41.46% -0.0019 -0.1584)
OKLCH	oklch(41.46% 0.158 269.3)
XYZ	xyz(9.1168, 6.6057, 34.0455)
Luminance	0.0661 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B3FA0 #A08C2B

analogous

#2B79A0 #2B3FA0 #522BA0

triadic

#2B3FA0 #A02B3F #3FA02B

tetradic

#2B3FA0 #A02B79 #A08C2B #2BA052

square

#2B3FA0 #A02B79 #A08C2B #2BA052

split-complementary

#2B3FA0 #A0522B #79A02B

monochromatic

#111940 #1E2C70 #2B3FA0 #3D55CB #6E80D8

Accessibility & contrast

On white

9.05

#2B3FA0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#2B3FA0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B3FA0

9.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B3FA0	#FFFFFF	#000000	##FFFFFF
##2B3FA0	1.00	9.05	2.32	9.05
#FFFFFF	9.05	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA3

Deuteranopia (green-blind)

#00439E

Tritanopia (blue-blind)

#005769

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #2b3fa0;
/* rgb */ color: rgb(43, 63, 160);
/* oklch */ color: oklch(41.5% 0.158 269.3);

Tailwind

colors: {
  custom: {
    50: '#7573bd',
    500: '#2b3fa0',
    950: '#000000',
  },
}

SCSS

$custom: #2b3fa0;
$custom-light: #7573bd;
$custom-dark: #000000;

JSON

{
  "hex": "#2b3fa0",
  "rgb": {
    "r": 43,
    "g": 63,
    "b": 160
  },
  "hsl": {
    "h": 229.744,
    "s": 57.635,
    "l": 39.804
  },
  "oklch": {
    "l": 0.41457,
    "c": 0.15845,
    "h": 269.3
  },
  "luminance": 0.06607
}

Semantic roles & 50–950 ramp

primary

#2B3FA0

secondary

#BFB068

accent

#C747E1

background

#F7F7FB

surface

#EEEDF7

border

#C9C8D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #2B3FA0

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

Preview Lab → · Contrast checker → · Palette generator →