#2B3DA3#2B3DA3

#2B3DA3 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.3% C 0.165 H 269.8°. Best body text is #FFFFFF at 9.13:1 contrast (WCAG AA passes).

Color values

HEX	#2B3DA3
RGB	rgb(43, 61, 163)
HSL	hsl(231, 58%, 40%)
HSV	hsv(231, 74%, 64%)
CMYK	cmyk(73.6%, 62.6%, 0%, 36.1%)
CIE-LAB	lab(30.63, 29.20, -57.14)
CIE-LCH	lch(30.63, 64.17, 297.07°)
OKLab	oklab(41.34% -0.0005 -0.165)
OKLCH	oklch(41.34% 0.165 269.8)
XYZ	xyz(9.2736, 6.4945, 35.4081)
Luminance	0.0649 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B3DA3 #A3912B

analogous

#2B79A3 #2B3DA3 #552BA3

triadic

#2B3DA3 #A32B3D #3DA32B

tetradic

#2B3DA3 #A32B79 #A3912B #2BA355

square

#2B3DA3 #A32B79 #A3912B #2BA355

split-complementary

#2B3DA3 #A3552B #79A32B

monochromatic

#111942 #1E2B73 #2B3DA3 #3F54CC #6F7FD9

Accessibility & contrast

On white

9.13

#2B3DA3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#2B3DA3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B3DA3

9.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B3DA3	#FFFFFF	#000000	##FFFFFF
##2B3DA3	1.00	9.13	2.30	9.13
#FFFFFF	9.13	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA6

Deuteranopia (green-blind)

#0043A1

Tritanopia (blue-blind)

#00576A

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #2b3da3;
/* rgb */ color: rgb(43, 61, 163);
/* oklch */ color: oklch(41.3% 0.165 269.8);

Tailwind

colors: {
  custom: {
    50: '#7672bf',
    500: '#2b3da3',
    950: '#000000',
  },
}

SCSS

$custom: #2b3da3;
$custom-light: #7672bf;
$custom-dark: #000000;

JSON

{
  "hex": "#2b3da3",
  "rgb": {
    "r": 43,
    "g": 61,
    "b": 163
  },
  "hsl": {
    "h": 231,
    "s": 58.252,
    "l": 40.392
  },
  "oklch": {
    "l": 0.4134,
    "c": 0.16504,
    "h": 269.8
  },
  "luminance": 0.06495
}

Semantic roles & 50–950 ramp

primary

#2B3DA3

secondary

#C0B36A

accent

#CA46E1

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #2B3DA3

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

Preview Lab → · Contrast checker → · Palette generator →