#1B155D#1B155D

#1B155D is a dark, vivid blue. Relative luminance 0.016; OKLCH L 26.2% C 0.122 H 277.6°. Best body text is #FFFFFF at 16.01:1 contrast (WCAG AA passes).

Color values

HEX	#1B155D
RGB	rgb(27, 21, 93)
HSL	hsl(245, 63%, 22%)
HSV	hsv(245, 77%, 36%)
CMYK	cmyk(71%, 77.4%, 0%, 63.5%)
CIE-LAB	lab(12.98, 27.56, -41.79)
CIE-LCH	lch(12.98, 50.05, 303.40°)
OKLab	oklab(26.17% 0.016 -0.1207)
OKLCH	oklch(26.17% 0.122 277.6)
XYZ	xyz(2.6953, 1.5594, 10.5128)
Luminance	0.0156 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B155D #575D15

analogous

#15335D #1B155D #3F155D

triadic

#1B155D #5D1B15 #155D1B

tetradic

#1B155D #5D1533 #575D15 #155D3F

square

#1B155D #5D1533 #575D15 #155D3F

split-complementary

#1B155D #5D3F15 #335D15

monochromatic

#070619 #0D0A2B #1B155D #29208F #382CC1

Accessibility & contrast

On white

16.01

#1B155D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.31

#1B155D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B155D

16.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B155D	#FFFFFF	#000000	##FFFFFF
##1B155D	1.00	16.01	1.31	16.01
#FFFFFF	16.01	1.00	21.00	1.00
#000000	1.31	21.00	1.00	21.00
##FFFFFF	16.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00245F

Deuteranopia (green-blind)

#001E5C

Tritanopia (blue-blind)

#002937

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #1b155d;
/* rgb */ color: rgb(27, 21, 93);
/* oklch */ color: oklch(26.2% 0.122 277.6);

Tailwind

colors: {
  custom: {
    50: '#62538c',
    500: '#1b155d',
    950: '#000000',
  },
}

SCSS

$custom: #1b155d;
$custom-light: #62538c;
$custom-dark: #000000;

JSON

{
  "hex": "#1b155d",
  "rgb": {
    "r": 27,
    "g": 21,
    "b": 93
  },
  "hsl": {
    "h": 245,
    "s": 63.158,
    "l": 22.353
  },
  "oklch": {
    "l": 0.26168,
    "c": 0.12173,
    "h": 277.6
  },
  "luminance": 0.0156
}

Semantic roles & 50–950 ramp

primary

#1B155D

secondary

#8D9439

accent

#E642D8

background

#F6F4F8

surface

#EBE7F0

border

#C6C3CB

text

#06020C

muted

#7A787D

Preview Lab

Preview with #1B155D

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

Preview Lab → · Contrast checker → · Palette generator →