#2A1B90#2A1B90

#2A1B90 is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.9% C 0.178 H 277.0°. Best body text is #FFFFFF at 12.67:1 contrast (WCAG AA passes).

Color values

HEX	#2A1B90
RGB	rgb(42, 27, 144)
HSL	hsl(248, 68%, 34%)
HSV	hsv(248, 81%, 56%)
CMYK	cmyk(70.8%, 81.3%, 0%, 43.5%)
CIE-LAB	lab(21.17, 42.99, -61.07)
CIE-LCH	lch(21.17, 74.69, 305.15°)
OKLab	oklab(33.95% 0.0215 -0.1765)
OKLCH	oklch(33.95% 0.178 277)
XYZ	xyz(6.3792, 3.2891, 26.6788)
Luminance	0.0329 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A1B90 #81901B

analogous

#1B4690 #2A1B90 #641B90

triadic

#2A1B90 #902A1B #1B902A

tetradic

#2A1B90 #901B46 #81901B #1B9064

square

#2A1B90 #901B46 #81901B #1B9064

split-complementary

#2A1B90 #90641B #46901B

monochromatic

#0C0829 #1B115C #2A1B90 #3925C4 #5C49DD

Accessibility & contrast

On white

12.67

#2A1B90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#2A1B90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2A1B90

12.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A1B90	#FFFFFF	#000000	##FFFFFF
##2A1B90	1.00	12.67	1.66	12.67
#FFFFFF	12.67	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003893

Deuteranopia (green-blind)

#002E8E

Tritanopia (blue-blind)

#003F56

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #2a1b90;
/* rgb */ color: rgb(42, 27, 144);
/* oklch */ color: oklch(33.9% 0.178 277.0);

Tailwind

colors: {
  custom: {
    50: '#745bb2',
    500: '#2a1b90',
    950: '#000000',
  },
}

SCSS

$custom: #2a1b90;
$custom-light: #745bb2;
$custom-dark: #000000;

JSON

{
  "hex": "#2a1b90",
  "rgb": {
    "r": 42,
    "g": 27,
    "b": 144
  },
  "hsl": {
    "h": 247.692,
    "s": 68.421,
    "l": 33.529
  },
  "oklch": {
    "l": 0.33948,
    "c": 0.1778,
    "h": 277
  },
  "luminance": 0.0329
}

Semantic roles & 50–950 ramp

primary

#2A1B90

secondary

#AFBF48

accent

#EB3DD5

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0411

muted

#7C7980

Preview Lab

Preview with #2A1B90

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

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