#2B3DA4#2B3DA4

#2B3DA4 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.4% C 0.166 H 269.8°. Best body text is #FFFFFF at 9.11:1 contrast (WCAG AA passes).

Color values

HEX	#2B3DA4
RGB	rgb(43, 61, 164)
HSL	hsl(231, 58%, 41%)
HSV	hsv(231, 74%, 64%)
CMYK	cmyk(73.8%, 62.8%, 0%, 35.7%)
CIE-LAB	lab(30.71, 29.58, -57.61)
CIE-LCH	lch(30.71, 64.75, 297.18°)
OKLab	oklab(41.43% -0.0005 -0.1664)
OKLCH	oklch(41.43% 0.166 269.8)
XYZ	xyz(9.3635, 6.5304, 35.8818)
Luminance	0.0653 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B3DA4 #A4922B

analogous

#2B7AA4 #2B3DA4 #552BA4

triadic

#2B3DA4 #A42B3D #3DA42B

tetradic

#2B3DA4 #A42B7A #A4922B #2BA455

square

#2B3DA4 #A42B7A #A4922B #2BA455

split-complementary

#2B3DA4 #A4552B #7AA42B

monochromatic

#121943 #1E2B74 #2B3DA4 #3F54CD #7080D9

Accessibility & contrast

On white

9.11

#2B3DA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#2B3DA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B3DA4

9.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B3DA4	#FFFFFF	#000000	##FFFFFF
##2B3DA4	1.00	9.11	2.31	9.11
#FFFFFF	9.11	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA7

Deuteranopia (green-blind)

#0043A2

Tritanopia (blue-blind)

#00576A

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #2b3da4;
/* rgb */ color: rgb(43, 61, 164);
/* oklch */ color: oklch(41.4% 0.166 269.8);

Tailwind

colors: {
  custom: {
    50: '#7672c0',
    500: '#2b3da4',
    950: '#000000',
  },
}

SCSS

$custom: #2b3da4;
$custom-light: #7672c0;
$custom-dark: #000000;

JSON

{
  "hex": "#2b3da4",
  "rgb": {
    "r": 43,
    "g": 61,
    "b": 164
  },
  "hsl": {
    "h": 231.074,
    "s": 58.454,
    "l": 40.588
  },
  "oklch": {
    "l": 0.4143,
    "c": 0.1664,
    "h": 269.8
  },
  "luminance": 0.06531
}

Semantic roles & 50–950 ramp

primary

#2B3DA4

secondary

#C1B46A

accent

#CB46E2

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #2B3DA4

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

Preview Lab → · Contrast checker → · Palette generator →