#1B1963#1B1963

#1B1963 is a dark, vivid blue. Relative luminance 0.018; OKLCH L 27.5% C 0.125 H 275.5°. Best body text is #FFFFFF at 15.38:1 contrast (WCAG AA passes).

Color values

HEX	#1B1963
RGB	rgb(27, 25, 99)
HSL	hsl(242, 60%, 24%)
HSV	hsv(242, 75%, 39%)
CMYK	cmyk(72.7%, 74.7%, 0%, 61.2%)
CIE-LAB	lab(14.56, 27.17, -43.18)
CIE-LCH	lch(14.56, 51.02, 302.18°)
OKLab	oklab(27.49% 0.012 -0.1248)
OKLCH	oklch(27.49% 0.125 275.5)
XYZ	xyz(3.0510, 1.8288, 11.9942)
Luminance	0.0183 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1963 #616319

analogous

#193C63 #1B1963 #401963

triadic

#1B1963 #631B19 #19631B

tetradic

#1B1963 #63193C #616319 #196340

square

#1B1963 #63193C #616319 #196340

split-complementary

#1B1963 #634019 #3C6319

monochromatic

#070618 #0E0D32 #1B1963 #282594 #3632C5

Accessibility & contrast

On white

15.38

#1B1963 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.37

#1B1963 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1963

15.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1963	#FFFFFF	#000000	##FFFFFF
##1B1963	1.00	15.38	1.37	15.38
#FFFFFF	15.38	1.00	21.00	1.00
#000000	1.37	21.00	1.00	21.00
##FFFFFF	15.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002865

Deuteranopia (green-blind)

#002162

Tritanopia (blue-blind)

#002D3C

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #1b1963;
/* rgb */ color: rgb(27, 25, 99);
/* oklch */ color: oklch(27.5% 0.125 275.5);

Tailwind

colors: {
  custom: {
    50: '#635690',
    500: '#1b1963',
    950: '#000000',
  },
}

SCSS

$custom: #1b1963;
$custom-light: #635690;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1963",
  "rgb": {
    "r": 27,
    "g": 25,
    "b": 99
  },
  "hsl": {
    "h": 241.622,
    "s": 59.677,
    "l": 24.314
  },
  "oklch": {
    "l": 0.27494,
    "c": 0.12534,
    "h": 275.5
  },
  "luminance": 0.01829
}

Semantic roles & 50–950 ramp

primary

#1B1963

secondary

#97993F

accent

#E345DF

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#06030D

muted

#7A787D

Preview Lab

Preview with #1B1963

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

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