#1B104F#1B104F

#1B104F is a very dark, moderate violet. Relative luminance 0.012; OKLCH L 23.8% C 0.108 H 282.4°. Best body text is #FFFFFF at 17.02:1 contrast (WCAG AA passes).

Color values

HEX	#1B104F
RGB	rgb(27, 16, 79)
HSL	hsl(250, 66%, 19%)
HSV	hsv(250, 80%, 31%)
CMYK	cmyk(65.8%, 79.7%, 0%, 69%)
CIE-LAB	lab(10.32, 25.69, -36.65)
CIE-LCH	lch(10.32, 44.76, 305.03°)
OKLab	oklab(23.81% 0.0232 -0.1056)
OKLCH	oklch(23.81% 0.108 282.4)
XYZ	xyz(2.0481, 1.1680, 7.5131)
Luminance	0.0117 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B104F #444F10

analogous

#10244F #1B104F #3A104F

triadic

#1B104F #4F1B10 #104F1B

tetradic

#1B104F #4F1024 #444F10 #104F3A

square

#1B104F #4F1024 #444F10 #104F3A

split-complementary

#1B104F #4F3A10 #244F10

monochromatic

#090519 #0A061C #1B104F #2C1A82 #3E25B5

Accessibility & contrast

On white

17.02

#1B104F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.23

#1B104F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B104F

17.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B104F	#FFFFFF	#000000	##FFFFFF
##1B104F	1.00	17.02	1.23	17.02
#FFFFFF	17.02	1.00	21.00	1.00
#000000	1.23	21.00	1.00	21.00
##FFFFFF	17.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001E51

Deuteranopia (green-blind)

#001A4E

Tritanopia (blue-blind)

#00212E

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #1b104f;
/* rgb */ color: rgb(27, 16, 79);
/* oklch */ color: oklch(23.8% 0.108 282.4);

Tailwind

colors: {
  custom: {
    50: '#5f4f81',
    500: '#1b104f',
    950: '#000000',
  },
}

SCSS

$custom: #1b104f;
$custom-light: #5f4f81;
$custom-dark: #000000;

JSON

{
  "hex": "#1b104f",
  "rgb": {
    "r": 27,
    "g": 16,
    "b": 79
  },
  "hsl": {
    "h": 250.476,
    "s": 66.316,
    "l": 18.627
  },
  "oklch": {
    "l": 0.23813,
    "c": 0.10817,
    "h": 282.4
  },
  "luminance": 0.01168
}

Semantic roles & 50–950 ramp

primary

#1B104F

secondary

#7A8932

accent

#E93FCB

background

#F5F4F7

surface

#EAE7EE

border

#C6C3C9

text

#05020A

muted

#79787C

Preview Lab

Preview with #1B104F

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

Preview Lab → · Contrast checker → · Palette generator →