#2A1B7B#2A1B7B

#2A1B7B is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.6% C 0.152 H 280.4°. Best body text is #FFFFFF at 13.63:1 contrast (WCAG AA passes).

Color values

HEX	#2A1B7B
RGB	rgb(42, 27, 123)
HSL	hsl(249, 64%, 29%)
HSV	hsv(249, 78%, 48%)
CMYK	cmyk(65.9%, 78%, 0%, 51.8%)
CIE-LAB	lab(18.82, 36.25, -51.72)
CIE-LCH	lch(18.82, 63.15, 305.03°)
OKLab	oklab(31.62% 0.0273 -0.1492)
OKLCH	oklch(31.62% 0.152 280.4)
XYZ	xyz(4.9208, 2.7058, 18.9980)
Luminance	0.0271 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A1B7B #6C7B1B

analogous

#1B3C7B #2A1B7B #5A1B7B

triadic

#2A1B7B #7B2A1B #1B7B2A

tetradic

#2A1B7B #7B1B3C #6C7B1B #1B7B5A

square

#2A1B7B #7B1B3C #6C7B1B #1B7B5A

split-complementary

#2A1B7B #7B5A1B #3C7B1B

monochromatic

#090619 #191049 #2A1B7B #3B26AD #543CD4

Accessibility & contrast

On white

13.63

#2A1B7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#2A1B7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2A1B7B

13.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A1B7B	#FFFFFF	#000000	##FFFFFF
##2A1B7B	1.00	13.63	1.54	13.63
#FFFFFF	13.63	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00317E

Deuteranopia (green-blind)

#002A79

Tritanopia (blue-blind)

#00374A

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #2a1b7b;
/* rgb */ color: rgb(42, 27, 123);
/* oklch */ color: oklch(31.6% 0.152 280.4);

Tailwind

colors: {
  custom: {
    50: '#6f5aa2',
    500: '#2a1b7b',
    950: '#000000',
  },
}

SCSS

$custom: #2a1b7b;
$custom-light: #6f5aa2;
$custom-dark: #000000;

JSON

{
  "hex": "#2a1b7b",
  "rgb": {
    "r": 42,
    "g": 27,
    "b": 123
  },
  "hsl": {
    "h": 249.375,
    "s": 64,
    "l": 29.412
  },
  "oklch": {
    "l": 0.31616,
    "c": 0.15171,
    "h": 280.4
  },
  "luminance": 0.02706
}

Semantic roles & 50–950 ramp

primary

#2A1B7B

secondary

#9EAF43

accent

#E741CD

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08040F

muted

#7B797F

Preview Lab

Preview with #2A1B7B

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

Preview Lab → · Contrast checker → · Palette generator →