#2B3FA9#2B3FA9

#2B3FA9 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.3% C 0.171 H 269.3°. Best body text is #FFFFFF at 8.80:1 contrast (WCAG AA passes).

Color values

HEX	#2B3FA9
RGB	rgb(43, 63, 169)
HSL	hsl(230, 59%, 42%)
HSV	hsv(230, 75%, 66%)
CMYK	cmyk(74.6%, 62.7%, 0%, 33.7%)
CIE-LAB	lab(31.65, 30.12, -59.08)
CIE-LCH	lch(31.65, 66.31, 297.01°)
OKLab	oklab(42.26% -0.002 -0.1707)
OKLCH	oklch(42.26% 0.171 269.3)
XYZ	xyz(9.9327, 6.9321, 38.3430)
Luminance	0.0693 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B3FA9 #A9952B

analogous

#2B7EA9 #2B3FA9 #562BA9

triadic

#2B3FA9 #A92B3F #3FA92B

tetradic

#2B3FA9 #A92B7E #A9952B #2BA956

square

#2B3FA9 #A92B7E #A9952B #2BA956

split-complementary

#2B3FA9 #A9562B #7EA92B

monochromatic

#121B47 #1F2D78 #2B3FA9 #4259CF #7384DB

Accessibility & contrast

On white

8.80

#2B3FA9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#2B3FA9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B3FA9

8.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B3FA9	#FFFFFF	#000000	##FFFFFF
##2B3FA9	1.00	8.80	2.39	8.80
#FFFFFF	8.80	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050AC

Deuteranopia (green-blind)

#0045A7

Tritanopia (blue-blind)

#005A6E

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #2b3fa9;
/* rgb */ color: rgb(43, 63, 169);
/* oklch */ color: oklch(42.3% 0.171 269.3);

Tailwind

colors: {
  custom: {
    50: '#7774c3',
    500: '#2b3fa9',
    950: '#000000',
  },
}

SCSS

$custom: #2b3fa9;
$custom-light: #7774c3;
$custom-dark: #000000;

JSON

{
  "hex": "#2b3fa9",
  "rgb": {
    "r": 43,
    "g": 63,
    "b": 169
  },
  "hsl": {
    "h": 230.476,
    "s": 59.434,
    "l": 41.569
  },
  "oklch": {
    "l": 0.42256,
    "c": 0.1707,
    "h": 269.3
  },
  "luminance": 0.06933
}

Semantic roles & 50–950 ramp

primary

#2B3FA9

secondary

#C3B56D

accent

#CA45E3

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #2B3FA9

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

Preview Lab → · Contrast checker → · Palette generator →