#1B0F5D#1B0F5D

#1B0F5D is a dark, vivid blue. Relative luminance 0.014; OKLCH L 25.3% C 0.128 H 279.0°. Best body text is #FFFFFF at 16.50:1 contrast (WCAG AA passes).

Color values

HEX	#1B0F5D
RGB	rgb(27, 15, 93)
HSL	hsl(249, 72%, 21%)
HSV	hsv(249, 84%, 36%)
CMYK	cmyk(71%, 83.9%, 0%, 63.5%)
CIE-LAB	lab(11.72, 31.13, -43.86)
CIE-LCH	lch(11.72, 53.78, 305.36°)
OKLab	oklab(25.28% 0.02 -0.1267)
OKLCH	oklch(25.28% 0.128 279)
XYZ	xyz(2.5980, 1.3648, 10.4803)
Luminance	0.0137 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B0F5D #515D0F

analogous

#0F2A5D #1B0F5D #420F5D

triadic

#1B0F5D #5D1B0F #0F5D1B

tetradic

#1B0F5D #5D0F2A #515D0F #0F5D42

square

#1B0F5D #5D0F2A #515D0F #0F5D42

split-complementary

#1B0F5D #5D420F #2A5D0F

monochromatic

#08041A #0C0628 #1B0F5D #2A1792 #3A20C6

Accessibility & contrast

On white

16.50

#1B0F5D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#1B0F5D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B0F5D

16.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B0F5D	#FFFFFF	#000000	##FFFFFF
##1B0F5D	1.00	16.50	1.27	16.50
#FFFFFF	16.50	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00225F

Deuteranopia (green-blind)

#001C5C

Tritanopia (blue-blind)

#002636

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #1b0f5d;
/* rgb */ color: rgb(27, 15, 93);
/* oklch */ color: oklch(25.3% 0.128 279.0);

Tailwind

colors: {
  custom: {
    50: '#63508c',
    500: '#1b0f5d',
    950: '#000000',
  },
}

SCSS

$custom: #1b0f5d;
$custom-light: #63508c;
$custom-dark: #000000;

JSON

{
  "hex": "#1b0f5d",
  "rgb": {
    "r": 27,
    "g": 15,
    "b": 93
  },
  "hsl": {
    "h": 249.231,
    "s": 72.222,
    "l": 21.176
  },
  "oklch": {
    "l": 0.2528,
    "c": 0.12823,
    "h": 279
  },
  "luminance": 0.01365
}

Semantic roles & 50–950 ramp

primary

#1B0F5D

secondary

#879631

accent

#EF39D3

background

#F6F4F8

surface

#EBE7F0

border

#C6C3CB

text

#06020C

muted

#7A787D

Preview Lab

Preview with #1B0F5D

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

Preview Lab → · Contrast checker → · Palette generator →