#1B155A#1B155A

#1B155A is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.8% C 0.118 H 278.1°. Best body text is #FFFFFF at 16.13:1 contrast (WCAG AA passes).

Color values

HEX	#1B155A
RGB	rgb(27, 21, 90)
HSL	hsl(245, 62%, 22%)
HSV	hsv(245, 77%, 35%)
CMYK	cmyk(70%, 76.7%, 0%, 64.7%)
CIE-LAB	lab(12.65, 26.46, -40.31)
CIE-LCH	lch(12.65, 48.22, 303.29°)
OKLab	oklab(25.84% 0.0167 -0.1163)
OKLCH	oklch(25.84% 0.118 278.1)
XYZ	xyz(2.5650, 1.5073, 9.8266)
Luminance	0.0151 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B155A #545A15

analogous

#15325A #1B155A #3E155A

triadic

#1B155A #5A1B15 #155A1B

tetradic

#1B155A #5A1532 #545A15 #155A3E

square

#1B155A #5A1532 #545A15 #155A3E

split-complementary

#1B155A #5A3E15 #325A15

monochromatic

#070619 #0C0928 #1B155A #2A218C #392CBD

Accessibility & contrast

On white

16.13

#1B155A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.30

#1B155A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B155A

16.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B155A	#FFFFFF	#000000	##FFFFFF
##1B155A	1.00	16.13	1.30	16.13
#FFFFFF	16.13	1.00	21.00	1.00
#000000	1.30	21.00	1.00	21.00
##FFFFFF	16.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00245C

Deuteranopia (green-blind)

#001E59

Tritanopia (blue-blind)

#002836

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #1b155a;
/* rgb */ color: rgb(27, 21, 90);
/* oklch */ color: oklch(25.8% 0.118 278.1);

Tailwind

colors: {
  custom: {
    50: '#615389',
    500: '#1b155a',
    950: '#000000',
  },
}

SCSS

$custom: #1b155a;
$custom-light: #615389;
$custom-dark: #000000;

JSON

{
  "hex": "#1b155a",
  "rgb": {
    "r": 27,
    "g": 21,
    "b": 90
  },
  "hsl": {
    "h": 245.217,
    "s": 62.162,
    "l": 21.765
  },
  "oklch": {
    "l": 0.25837,
    "c": 0.11754,
    "h": 278.1
  },
  "luminance": 0.01508
}

Semantic roles & 50–950 ramp

primary

#1B155A

secondary

#8A9239

accent

#E543D7

background

#F6F4F8

surface

#EBE7F0

border

#C6C3CB

text

#06020C

muted

#7A787D

Preview Lab

Preview with #1B155A

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

Preview Lab → · Contrast checker → · Palette generator →