#2A1B8E#2A1B8E

#2A1B8E is a dark, vivid blue. Relative luminance 0.032; OKLCH L 33.7% C 0.175 H 277.2°. Best body text is #FFFFFF at 12.76:1 contrast (WCAG AA passes).

Color values

HEX	#2A1B8E
RGB	rgb(42, 27, 142)
HSL	hsl(248, 68%, 33%)
HSV	hsv(248, 81%, 56%)
CMYK	cmyk(70.4%, 81%, 0%, 44.3%)
CIE-LAB	lab(20.94, 42.36, -60.21)
CIE-LCH	lch(20.94, 73.62, 305.13°)
OKLab	oklab(33.72% 0.0221 -0.174)
OKLCH	oklch(33.72% 0.175 277.2)
XYZ	xyz(6.2277, 3.2285, 25.8809)
Luminance	0.0323 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A1B8E #7F8E1B

analogous

#1B458E #2A1B8E #631B8E

triadic

#2A1B8E #8E2A1B #1B8E2A

tetradic

#2A1B8E #8E1B45 #7F8E1B #1B8E63

square

#2A1B8E #8E1B45 #7F8E1B #1B8E63

split-complementary

#2A1B8E #8E631B #458E1B

monochromatic

#0C0727 #1B115B #2A1B8E #3925C1 #5B47DC

Accessibility & contrast

On white

12.76

#2A1B8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#2A1B8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2A1B8E

12.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A1B8E	#FFFFFF	#000000	##FFFFFF
##2A1B8E	1.00	12.76	1.65	12.76
#FFFFFF	12.76	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003791

Deuteranopia (green-blind)

#002D8C

Tritanopia (blue-blind)

#003E55

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #2a1b8e;
/* rgb */ color: rgb(42, 27, 142);
/* oklch */ color: oklch(33.7% 0.175 277.2);

Tailwind

colors: {
  custom: {
    50: '#745bb0',
    500: '#2a1b8e',
    950: '#000000',
  },
}

SCSS

$custom: #2a1b8e;
$custom-light: #745bb0;
$custom-dark: #000000;

JSON

{
  "hex": "#2a1b8e",
  "rgb": {
    "r": 42,
    "g": 27,
    "b": 142
  },
  "hsl": {
    "h": 247.826,
    "s": 68.047,
    "l": 33.137
  },
  "oklch": {
    "l": 0.33721,
    "c": 0.17537,
    "h": 277.2
  },
  "luminance": 0.03229
}

Semantic roles & 50–950 ramp

primary

#2A1B8E

secondary

#AEBE47

accent

#EB3DD4

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #2A1B8E

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

Preview Lab → · Contrast checker → · Palette generator →