#2A1B9E#2A1B9E

#2A1B9E is a dark, vivid blue. Relative luminance 0.037; OKLCH L 35.6% C 0.194 H 275.2°. Best body text is #FFFFFF at 12.01:1 contrast (WCAG AA passes).

Color values

HEX	#2A1B9E
RGB	rgb(42, 27, 158)
HSL	hsl(247, 71%, 36%)
HSV	hsv(247, 83%, 62%)
CMYK	cmyk(73.4%, 82.9%, 0%, 38%)
CIE-LAB	lab(22.81, 47.35, -66.98)
CIE-LCH	lch(22.81, 82.03, 305.25°)
OKLab	oklab(35.56% 0.0175 -0.1936)
OKLCH	oklch(35.56% 0.194 275.2)
XYZ	xyz(7.5163, 3.7440, 32.6677)
Luminance	0.0374 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A1B9E #8F9E1B

analogous

#1B4E9E #2A1B9E #6C1B9E

triadic

#2A1B9E #9E2A1B #1B9E2A

tetradic

#2A1B9E #9E1B4E #8F9E1B #1B9E6C

square

#2A1B9E #9E1B4E #8F9E1B #1B9E6C

split-complementary

#2A1B9E #9E6C1B #4E9E1B

monochromatic

#0E0935 #1C126A #2A1B9E #3824D2 #6252E1

Accessibility & contrast

On white

12.01

#2A1B9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#2A1B9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2A1B9E

12.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A1B9E	#FFFFFF	#000000	##FFFFFF
##2A1B9E	1.00	12.01	1.75	12.01
#FFFFFF	12.01	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	12.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003CA2

Deuteranopia (green-blind)

#00309C

Tritanopia (blue-blind)

#00455E

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #2a1b9e;
/* rgb */ color: rgb(42, 27, 158);
/* oklch */ color: oklch(35.6% 0.194 275.2);

Tailwind

colors: {
  custom: {
    50: '#775cbc',
    500: '#2a1b9e',
    950: '#000000',
  },
}

SCSS

$custom: #2a1b9e;
$custom-light: #775cbc;
$custom-dark: #000000;

JSON

{
  "hex": "#2a1b9e",
  "rgb": {
    "r": 42,
    "g": 27,
    "b": 158
  },
  "hsl": {
    "h": 246.87,
    "s": 70.811,
    "l": 36.275
  },
  "oklch": {
    "l": 0.35563,
    "c": 0.19444,
    "h": 275.2
  },
  "luminance": 0.03745
}

Semantic roles & 50–950 ramp

primary

#2A1B9E

secondary

#B7C451

accent

#EE3AD9

background

#F8F5FB

surface

#EFE9F7

border

#CAC5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #2A1B9E

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

Preview Lab → · Contrast checker → · Palette generator →