#2A1F9B#2A1F9B

#2A1F9B is a dark, vivid blue. Relative luminance 0.038; OKLCH L 35.7% C 0.188 H 275.1°. Best body text is #FFFFFF at 11.88:1 contrast (WCAG AA passes).

Color values

HEX	#2A1F9B
RGB	rgb(42, 31, 155)
HSL	hsl(245, 67%, 36%)
HSV	hsv(245, 80%, 61%)
CMYK	cmyk(72.9%, 80%, 0%, 39.2%)
CIE-LAB	lab(23.13, 44.45, -64.61)
CIE-LCH	lch(23.13, 78.43, 304.53°)
OKLab	oklab(35.69% 0.0168 -0.1868)
OKLCH	oklch(35.69% 0.188 275.1)
XYZ	xyz(7.3593, 3.8381, 31.3570)
Luminance	0.0384 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A1F9B #909B1F

analogous

#1F529B #2A1F9B #681F9B

triadic

#2A1F9B #9B2A1F #1F9B2A

tetradic

#2A1F9B #9B1F52 #909B1F #1F9B68

square

#2A1F9B #9B1F52 #909B1F #1F9B68

split-complementary

#2A1F9B #9B681F #529B1F

monochromatic

#0E0B35 #1C1568 #2A1F9B #3829CE #6357DD

Accessibility & contrast

On white

11.88

#2A1F9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#2A1F9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2A1F9B

11.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A1F9B	#FFFFFF	#000000	##FFFFFF
##2A1F9B	1.00	11.88	1.77	11.88
#FFFFFF	11.88	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D9E

Deuteranopia (green-blind)

#003199

Tritanopia (blue-blind)

#00455D

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #2a1f9b;
/* rgb */ color: rgb(42, 31, 155);
/* oklch */ color: oklch(35.7% 0.188 275.1);

Tailwind

colors: {
  custom: {
    50: '#765eba',
    500: '#2a1f9b',
    950: '#000000',
  },
}

SCSS

$custom: #2a1f9b;
$custom-light: #765eba;
$custom-dark: #000000;

JSON

{
  "hex": "#2a1f9b",
  "rgb": {
    "r": 42,
    "g": 31,
    "b": 155
  },
  "hsl": {
    "h": 245.323,
    "s": 66.667,
    "l": 36.471
  },
  "oklch": {
    "l": 0.35685,
    "c": 0.18758,
    "h": 275.1
  },
  "luminance": 0.03839
}

Semantic roles & 50–950 ramp

primary

#2A1F9B

secondary

#B7C155

accent

#EA3EDA

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #2A1F9B

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

Preview Lab → · Contrast checker → · Palette generator →