#2B309A#2B309A

#2B309A is a dark, vivid blue. Relative luminance 0.050; OKLCH L 38.2% C 0.169 H 273.1°. Best body text is #FFFFFF at 10.54:1 contrast (WCAG AA passes).

Color values

HEX	#2B309A
RGB	rgb(43, 48, 154)
HSL	hsl(237, 56%, 39%)
HSV	hsv(237, 72%, 60%)
CMYK	cmyk(72.1%, 68.8%, 0%, 39.6%)
CIE-LAB	lab(26.62, 34.35, -58.24)
CIE-LCH	lch(26.62, 67.62, 300.53°)
OKLab	oklab(38.16% 0.009 -0.1683)
OKLCH	oklch(38.16% 0.169 273.1)
XYZ	xyz(7.8840, 4.9598, 31.1074)
Luminance	0.0496 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B309A #9A952B

analogous

#2B679A #2B309A #5D2B9A

triadic

#2B309A #9A2B30 #309A2B

tetradic

#2B309A #9A2B67 #9A952B #2B9A5D

square

#2B309A #9A2B67 #9A952B #2B9A5D

split-complementary

#2B309A #9A5D2B #679A2B

monochromatic

#10123A #1E216A #2B309A #3A41C8 #6A6FD5

Accessibility & contrast

On white

10.54

#2B309A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#2B309A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B309A

10.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B309A	#FFFFFF	#000000	##FFFFFF
##2B309A	1.00	10.54	1.99	10.54
#FFFFFF	10.54	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00449D

Deuteranopia (green-blind)

#003A98

Tritanopia (blue-blind)

#004D61

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #2b309a;
/* rgb */ color: rgb(43, 48, 154);
/* oklch */ color: oklch(38.2% 0.169 273.1);

Tailwind

colors: {
  custom: {
    50: '#7569b9',
    500: '#2b309a',
    950: '#000000',
  },
}

SCSS

$custom: #2b309a;
$custom-light: #7569b9;
$custom-dark: #000000;

JSON

{
  "hex": "#2b309a",
  "rgb": {
    "r": 43,
    "g": 48,
    "b": 154
  },
  "hsl": {
    "h": 237.297,
    "s": 56.345,
    "l": 38.627
  },
  "oklch": {
    "l": 0.38156,
    "c": 0.16859,
    "h": 273.1
  },
  "luminance": 0.04961
}

Semantic roles & 50–950 ramp

primary

#2B309A

secondary

#BCB865

accent

#D948E0

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#0A0612

muted

#7C7A81

Preview Lab

Preview with #2B309A

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

Preview Lab → · Contrast checker → · Palette generator →