#1B155C#1B155C

#1B155C is a dark, vivid blue. Relative luminance 0.015; OKLCH L 26.1% C 0.120 H 277.8°. Best body text is #FFFFFF at 16.05:1 contrast (WCAG AA passes).

Color values

HEX	#1B155C
RGB	rgb(27, 21, 92)
HSL	hsl(245, 63%, 22%)
HSV	hsv(245, 77%, 36%)
CMYK	cmyk(70.7%, 77.2%, 0%, 63.9%)
CIE-LAB	lab(12.87, 27.19, -41.29)
CIE-LCH	lch(12.87, 49.44, 303.37°)
OKLab	oklab(26.06% 0.0163 -0.1192)
OKLCH	oklch(26.06% 0.12 277.8)
XYZ	xyz(2.6513, 1.5418, 10.2810)
Luminance	0.0154 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B155C #565C15

analogous

#15335C #1B155C #3E155C

triadic

#1B155C #5C1B15 #155C1B

tetradic

#1B155C #5C1533 #565C15 #155C3E

square

#1B155C #5C1533 #565C15 #155C3E

split-complementary

#1B155C #5C3E15 #335C15

monochromatic

#070619 #0C0A2A #1B155C #2A208E #382CC0

Accessibility & contrast

On white

16.05

#1B155C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.31

#1B155C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B155C

16.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B155C	#FFFFFF	#000000	##FFFFFF
##1B155C	1.00	16.05	1.31	16.05
#FFFFFF	16.05	1.00	21.00	1.00
#000000	1.31	21.00	1.00	21.00
##FFFFFF	16.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00245E

Deuteranopia (green-blind)

#001E5B

Tritanopia (blue-blind)

#002937

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #1b155c;
/* rgb */ color: rgb(27, 21, 92);
/* oklch */ color: oklch(26.1% 0.120 277.8);

Tailwind

colors: {
  custom: {
    50: '#62538b',
    500: '#1b155c',
    950: '#000000',
  },
}

SCSS

$custom: #1b155c;
$custom-light: #62538b;
$custom-dark: #000000;

JSON

{
  "hex": "#1b155c",
  "rgb": {
    "r": 27,
    "g": 21,
    "b": 92
  },
  "hsl": {
    "h": 245.07,
    "s": 62.832,
    "l": 22.157
  },
  "oklch": {
    "l": 0.26057,
    "c": 0.12034,
    "h": 277.8
  },
  "luminance": 0.01542
}

Semantic roles & 50–950 ramp

primary

#1B155C

secondary

#8C9339

accent

#E642D8

background

#F6F4F8

surface

#EBE7F0

border

#C6C3CB

text

#06020C

muted

#7A787D

Preview Lab

Preview with #1B155C

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

Preview Lab → · Contrast checker → · Palette generator →