#1B0F4E#1B0F4E

#1B0F4E is a very dark, moderate violet. Relative luminance 0.011; OKLCH L 23.5% C 0.108 H 283.0°. Best body text is #FFFFFF at 17.14:1 contrast (WCAG AA passes).

Color values

HEX	#1B0F4E
RGB	rgb(27, 15, 78)
HSL	hsl(251, 68%, 18%)
HSV	hsv(251, 81%, 31%)
CMYK	cmyk(65.4%, 80.8%, 0%, 69.4%)
CIE-LAB	lab(9.99, 25.96, -36.51)
CIE-LCH	lch(9.99, 44.80, 305.42°)
OKLab	oklab(23.55% 0.0243 -0.1052)
OKLCH	oklch(23.55% 0.108 283)
XYZ	xyz(1.9975, 1.1246, 7.3181)
Luminance	0.0112 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.21

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B0F4E #424E0F

analogous

#0F224E #1B0F4E #3A0F4E

triadic

#1B0F4E #4E1B0F #0F4E1B

tetradic

#1B0F4E #4E0F22 #424E0F #0F4E3A

square

#1B0F4E #4E0F22 #424E0F #0F4E3A

split-complementary

#1B0F4E #4E3A0F #224E0F

monochromatic

#09051A #09051B #1B0F4E #2D1981 #3F23B5

Accessibility & contrast

On white

17.14

#1B0F4E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.22

#1B0F4E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B0F4E

17.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B0F4E	#FFFFFF	#000000	##FFFFFF
##1B0F4E	1.00	17.14	1.22	17.14
#FFFFFF	17.14	1.00	21.00	1.00
#000000	1.22	21.00	1.00	21.00
##FFFFFF	17.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001D50

Deuteranopia (green-blind)

#00194D

Tritanopia (blue-blind)

#00212D

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #1b0f4e;
/* rgb */ color: rgb(27, 15, 78);
/* oklch */ color: oklch(23.5% 0.108 283.0);

Tailwind

colors: {
  custom: {
    50: '#5f4f80',
    500: '#1b0f4e',
    950: '#000000',
  },
}

SCSS

$custom: #1b0f4e;
$custom-light: #5f4f80;
$custom-dark: #000000;

JSON

{
  "hex": "#1b0f4e",
  "rgb": {
    "r": 27,
    "g": 15,
    "b": 78
  },
  "hsl": {
    "h": 251.429,
    "s": 67.742,
    "l": 18.235
  },
  "oklch": {
    "l": 0.23546,
    "c": 0.10799,
    "h": 283
  },
  "luminance": 0.01125
}

Semantic roles & 50–950 ramp

primary

#1B0F4E

secondary

#788831

accent

#EB3DCA

background

#F5F4F7

surface

#EAE7EE

border

#C6C3C9

text

#05020A

muted

#79787C

Preview Lab

Preview with #1B0F4E

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

Preview Lab → · Contrast checker → · Palette generator →