#1B115A#1B115A

#1B115A is a dark, vivid blue. Relative luminance 0.014; OKLCH L 25.2% C 0.122 H 279.2°. Best body text is #FFFFFF at 16.48:1 contrast (WCAG AA passes).

Color values

HEX	#1B115A
RGB	rgb(27, 17, 90)
HSL	hsl(248, 68%, 21%)
HSV	hsv(248, 81%, 35%)
CMYK	cmyk(70%, 81.1%, 0%, 64.7%)
CIE-LAB	lab(11.77, 28.95, -41.76)
CIE-LCH	lch(11.77, 50.82, 304.73°)
OKLab	oklab(25.21% 0.0196 -0.1206)
OKLCH	oklch(25.21% 0.122 279.2)
XYZ	xyz(2.4973, 1.3719, 9.8041)
Luminance	0.0137 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B115A #505A11

analogous

#112B5A #1B115A #3F115A

triadic

#1B115A #5A1B11 #115A1B

tetradic

#1B115A #5A112B #505A11 #115A3F

square

#1B115A #5A112B #505A11 #115A3F

split-complementary

#1B115A #5A3F11 #2B5A11

monochromatic

#08051A #0C0727 #1B115A #2A1B8D #3A24C1

Accessibility & contrast

On white

16.48

#1B115A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#1B115A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B115A

16.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B115A	#FFFFFF	#000000	##FFFFFF
##1B115A	1.00	16.48	1.27	16.48
#FFFFFF	16.48	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00225C

Deuteranopia (green-blind)

#001C59

Tritanopia (blue-blind)

#002635

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #1b115a;
/* rgb */ color: rgb(27, 17, 90);
/* oklch */ color: oklch(25.2% 0.122 279.2);

Tailwind

colors: {
  custom: {
    50: '#62518a',
    500: '#1b115a',
    950: '#000000',
  },
}

SCSS

$custom: #1b115a;
$custom-light: #62518a;
$custom-dark: #000000;

JSON

{
  "hex": "#1b115a",
  "rgb": {
    "r": 27,
    "g": 17,
    "b": 90
  },
  "hsl": {
    "h": 248.219,
    "s": 68.224,
    "l": 20.98
  },
  "oklch": {
    "l": 0.25209,
    "c": 0.12216,
    "h": 279.2
  },
  "luminance": 0.01372
}

Semantic roles & 50–950 ramp

primary

#1B115A

secondary

#869334

accent

#EB3DD3

background

#F6F4F8

surface

#EBE7F0

border

#C6C3CB

text

#06020C

muted

#7A787D

Preview Lab

Preview with #1B115A

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

Preview Lab → · Contrast checker → · Palette generator →