#1B0F5C#1B0F5C

#1B0F5C is a dark, vivid blue. Relative luminance 0.013; OKLCH L 25.2% C 0.127 H 279.2°. Best body text is #FFFFFF at 16.54:1 contrast (WCAG AA passes).

Color values

HEX	#1B0F5C
RGB	rgb(27, 15, 92)
HSL	hsl(249, 72%, 21%)
HSV	hsv(249, 84%, 36%)
CMYK	cmyk(70.7%, 83.7%, 0%, 63.9%)
CIE-LAB	lab(11.60, 30.79, -43.39)
CIE-LCH	lch(11.60, 53.20, 305.36°)
OKLab	oklab(25.16% 0.0203 -0.1253)
OKLCH	oklch(25.16% 0.127 279.2)
XYZ	xyz(2.5540, 1.3472, 10.2486)
Luminance	0.0135 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B0F5C #505C0F

analogous

#0F295C #1B0F5C #410F5C

triadic

#1B0F5C #5C1B0F #0F5C1B

tetradic

#1B0F5C #5C0F29 #505C0F #0F5C41

square

#1B0F5C #5C0F29 #505C0F #0F5C41

split-complementary

#1B0F5C #5C410F #295C0F

monochromatic

#08041A #0C0627 #1B0F5C #2A1891 #3A20C5

Accessibility & contrast

On white

16.54

#1B0F5C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#1B0F5C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B0F5C

16.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B0F5C	#FFFFFF	#000000	##FFFFFF
##1B0F5C	1.00	16.54	1.27	16.54
#FFFFFF	16.54	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00225E

Deuteranopia (green-blind)

#001C5B

Tritanopia (blue-blind)

#002635

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #1b0f5c;
/* rgb */ color: rgb(27, 15, 92);
/* oklch */ color: oklch(25.2% 0.127 279.2);

Tailwind

colors: {
  custom: {
    50: '#62508b',
    500: '#1b0f5c',
    950: '#000000',
  },
}

SCSS

$custom: #1b0f5c;
$custom-light: #62508b;
$custom-dark: #000000;

JSON

{
  "hex": "#1b0f5c",
  "rgb": {
    "r": 27,
    "g": 15,
    "b": 92
  },
  "hsl": {
    "h": 249.351,
    "s": 71.963,
    "l": 20.98
  },
  "oklch": {
    "l": 0.25161,
    "c": 0.12692,
    "h": 279.2
  },
  "luminance": 0.01347
}

Semantic roles & 50–950 ramp

primary

#1B0F5C

secondary

#869531

accent

#EF39D2

background

#F6F4F8

surface

#EBE7F0

border

#C6C3CB

text

#06020C

muted

#7A787D

Preview Lab

Preview with #1B0F5C

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

Preview Lab → · Contrast checker → · Palette generator →