#1B115C#1B115C

#1B115C is a dark, vivid blue. Relative luminance 0.014; OKLCH L 25.4% C 0.125 H 278.8°. Best body text is #FFFFFF at 16.39:1 contrast (WCAG AA passes).

Color values

HEX	#1B115C
RGB	rgb(27, 17, 92)
HSL	hsl(248, 69%, 21%)
HSV	hsv(248, 82%, 36%)
CMYK	cmyk(70.7%, 81.5%, 0%, 63.9%)
CIE-LAB	lab(12.00, 29.65, -42.73)
CIE-LCH	lch(12.00, 52.01, 304.75°)
OKLab	oklab(25.44% 0.019 -0.1234)
OKLCH	oklch(25.44% 0.125 278.8)
XYZ	xyz(2.5836, 1.4064, 10.2585)
Luminance	0.0141 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B115C #525C11

analogous

#112D5C #1B115C #41115C

triadic

#1B115C #5C1B11 #115C1B

tetradic

#1B115C #5C112D #525C11 #115C41

square

#1B115C #5C112D #525C11 #115C41

split-complementary

#1B115C #5C4111 #2D5C11

monochromatic

#08051A #0C0728 #1B115C #2A1B90 #3924C3

Accessibility & contrast

On white

16.39

#1B115C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.28

#1B115C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B115C

16.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B115C	#FFFFFF	#000000	##FFFFFF
##1B115C	1.00	16.39	1.28	16.39
#FFFFFF	16.39	1.00	21.00	1.00
#000000	1.28	21.00	1.00	21.00
##FFFFFF	16.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00225E

Deuteranopia (green-blind)

#001C5B

Tritanopia (blue-blind)

#002736

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #1b115c;
/* rgb */ color: rgb(27, 17, 92);
/* oklch */ color: oklch(25.4% 0.125 278.8);

Tailwind

colors: {
  custom: {
    50: '#62518b',
    500: '#1b115c',
    950: '#000000',
  },
}

SCSS

$custom: #1b115c;
$custom-light: #62518b;
$custom-dark: #000000;

JSON

{
  "hex": "#1b115c",
  "rgb": {
    "r": 27,
    "g": 17,
    "b": 92
  },
  "hsl": {
    "h": 248,
    "s": 68.807,
    "l": 21.373
  },
  "oklch": {
    "l": 0.2544,
    "c": 0.12486,
    "h": 278.8
  },
  "luminance": 0.01407
}

Semantic roles & 50–950 ramp

primary

#1B115C

secondary

#889534

accent

#EC3CD4

background

#F6F4F8

surface

#EBE7F0

border

#C6C3CB

text

#06020C

muted

#7A787D

Preview Lab

Preview with #1B115C

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

Preview Lab → · Contrast checker → · Palette generator →