#1B115B#1B115B

#1B115B is a dark, vivid blue. Relative luminance 0.014; OKLCH L 25.3% C 0.124 H 279.0°. Best body text is #FFFFFF at 16.43:1 contrast (WCAG AA passes).

Color values

HEX	#1B115B
RGB	rgb(27, 17, 91)
HSL	hsl(248, 69%, 21%)
HSV	hsv(248, 81%, 36%)
CMYK	cmyk(70.3%, 81.3%, 0%, 64.3%)
CIE-LAB	lab(11.88, 29.30, -42.25)
CIE-LCH	lch(11.88, 51.41, 304.74°)
OKLab	oklab(25.32% 0.0193 -0.122)
OKLCH	oklch(25.32% 0.124 279)
XYZ	xyz(2.5402, 1.3890, 10.0297)
Luminance	0.0139 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B115B #515B11

analogous

#112C5B #1B115B #40115B

triadic

#1B115B #5B1B11 #115B1B

tetradic

#1B115B #5B112C #515B11 #115B40

square

#1B115B #5B112C #515B11 #115B40

split-complementary

#1B115B #5B4011 #2C5B11

monochromatic

#08051A #0C0727 #1B115B #2A1B8F #3A24C2

Accessibility & contrast

On white

16.43

#1B115B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.28

#1B115B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B115B

16.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B115B	#FFFFFF	#000000	##FFFFFF
##1B115B	1.00	16.43	1.28	16.43
#FFFFFF	16.43	1.00	21.00	1.00
#000000	1.28	21.00	1.00	21.00
##FFFFFF	16.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00225D

Deuteranopia (green-blind)

#001C5A

Tritanopia (blue-blind)

#002635

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #1b115b;
/* rgb */ color: rgb(27, 17, 91);
/* oklch */ color: oklch(25.3% 0.124 279.0);

Tailwind

colors: {
  custom: {
    50: '#62518a',
    500: '#1b115b',
    950: '#000000',
  },
}

SCSS

$custom: #1b115b;
$custom-light: #62518a;
$custom-dark: #000000;

JSON

{
  "hex": "#1b115b",
  "rgb": {
    "r": 27,
    "g": 17,
    "b": 91
  },
  "hsl": {
    "h": 248.108,
    "s": 68.519,
    "l": 21.176
  },
  "oklch": {
    "l": 0.25325,
    "c": 0.12351,
    "h": 279
  },
  "luminance": 0.01389
}

Semantic roles & 50–950 ramp

primary

#1B115B

secondary

#879434

accent

#EB3CD4

background

#F6F4F8

surface

#EBE7F0

border

#C6C3CB

text

#06020C

muted

#7A787D

Preview Lab

Preview with #1B115B

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

Preview Lab → · Contrast checker → · Palette generator →