#2A1B8A#2A1B8A

#2A1B8A is a dark, vivid blue. Relative luminance 0.031; OKLCH L 33.3% C 0.170 H 277.8°. Best body text is #FFFFFF at 12.95:1 contrast (WCAG AA passes).

Color values

HEX	#2A1B8A
RGB	rgb(42, 27, 138)
HSL	hsl(248, 67%, 32%)
HSV	hsv(248, 80%, 54%)
CMYK	cmyk(69.6%, 80.4%, 0%, 45.9%)
CIE-LAB	lab(20.48, 41.09, -58.46)
CIE-LCH	lch(20.48, 71.46, 305.10°)
OKLab	oklab(33.27% 0.0232 -0.1689)
OKLCH	oklch(33.27% 0.17 277.8)
XYZ	xyz(5.9327, 3.1106, 24.3276)
Luminance	0.0311 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A1B8A #7B8A1B

analogous

#1B448A #2A1B8A #621B8A

triadic

#2A1B8A #8A2A1B #1B8A2A

tetradic

#2A1B8A #8A1B44 #7B8A1B #1B8A62

square

#2A1B8A #8A1B44 #7B8A1B #1B8A62

split-complementary

#2A1B8A #8A621B #448A1B

monochromatic

#0B0724 #1A1157 #2A1B8A #3A25BD #5945DB

Accessibility & contrast

On white

12.95

#2A1B8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.62

#2A1B8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2A1B8A

12.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A1B8A	#FFFFFF	#000000	##FFFFFF
##2A1B8A	1.00	12.95	1.62	12.95
#FFFFFF	12.95	1.00	21.00	1.00
#000000	1.62	21.00	1.00	21.00
##FFFFFF	12.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00368D

Deuteranopia (green-blind)

#002D88

Tritanopia (blue-blind)

#003C52

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #2a1b8a;
/* rgb */ color: rgb(42, 27, 138);
/* oklch */ color: oklch(33.3% 0.170 277.8);

Tailwind

colors: {
  custom: {
    50: '#735bad',
    500: '#2a1b8a',
    950: '#000000',
  },
}

SCSS

$custom: #2a1b8a;
$custom-light: #735bad;
$custom-dark: #000000;

JSON

{
  "hex": "#2a1b8a",
  "rgb": {
    "r": 42,
    "g": 27,
    "b": 138
  },
  "hsl": {
    "h": 248.108,
    "s": 67.273,
    "l": 32.353
  },
  "oklch": {
    "l": 0.33269,
    "c": 0.17049,
    "h": 277.8
  },
  "luminance": 0.03111
}

Semantic roles & 50–950 ramp

primary

#2A1B8A

secondary

#ACBC45

accent

#EA3ED3

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090410

muted

#7B797F

Preview Lab

Preview with #2A1B8A

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

Preview Lab → · Contrast checker → · Palette generator →