#1B1C97#1B1C97

#1B1C97 is a dark, vivid blue. Relative luminance 0.033; OKLCH L 34.0% C 0.189 H 270.1°. Best body text is #FFFFFF at 12.65:1 contrast (WCAG AA passes).

Color values

HEX	#1B1C97
RGB	rgb(27, 28, 151)
HSL	hsl(240, 70%, 35%)
HSV	hsv(240, 82%, 59%)
CMYK	cmyk(82.1%, 81.5%, 0%, 40.8%)
CIE-LAB	lab(21.20, 43.63, -65.38)
CIE-LCH	lch(21.20, 78.60, 303.71°)
OKLab	oklab(33.95% 0.0002 -0.1893)
OKLCH	oklch(33.95% 0.189 270.1)
XYZ	xyz(6.4513, 3.2971, 29.5686)
Luminance	0.0330 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1C97 #97961B

analogous

#1B5A97 #1B1C97 #581B97

triadic

#1B1C97 #971B1C #1C971B

tetradic

#1B1C97 #971B5A #97961B #1B9758

square

#1B1C97 #971B5A #97961B #1B9758

split-complementary

#1B1C97 #97581B #5A971B

monochromatic

#08092F #121263 #1B1C97 #2426CB #4D4EDF

Accessibility & contrast

On white

12.65

#1B1C97 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#1B1C97 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1C97

12.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1C97	#FFFFFF	#000000	##FFFFFF
##1B1C97	1.00	12.65	1.66	12.65
#FFFFFF	12.65	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00399A

Deuteranopia (green-blind)

#002C95

Tritanopia (blue-blind)

#00435A

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1b1c97;
/* rgb */ color: rgb(27, 28, 151);
/* oklch */ color: oklch(34.0% 0.189 270.1);

Tailwind

colors: {
  custom: {
    50: '#715bb7',
    500: '#1b1c97',
    950: '#000000',
  },
}

SCSS

$custom: #1b1c97;
$custom-light: #715bb7;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1c97",
  "rgb": {
    "r": 27,
    "g": 28,
    "b": 151
  },
  "hsl": {
    "h": 239.516,
    "s": 69.663,
    "l": 34.902
  },
  "oklch": {
    "l": 0.33953,
    "c": 0.18933,
    "h": 270.1
  },
  "luminance": 0.03298
}

Semantic roles & 50–950 ramp

primary

#1B1C97

secondary

#C1C14C

accent

#EB3BEC

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #1B1C97

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

Preview Lab → · Contrast checker → · Palette generator →