#1B104E#1B104E

#1B104E is a very dark, moderate violet. Relative luminance 0.012; OKLCH L 23.7% C 0.107 H 282.7°. Best body text is #FFFFFF at 17.06:1 contrast (WCAG AA passes).

Color values

HEX	#1B104E
RGB	rgb(27, 16, 78)
HSL	hsl(251, 66%, 18%)
HSV	hsv(251, 79%, 31%)
CMYK	cmyk(65.4%, 79.5%, 0%, 69.4%)
CIE-LAB	lab(10.21, 25.34, -36.14)
CIE-LCH	lch(10.21, 44.14, 305.03°)
OKLab	oklab(23.7% 0.0235 -0.1042)
OKLCH	oklch(23.7% 0.107 282.7)
XYZ	xyz(2.0120, 1.1535, 7.3229)
Luminance	0.0115 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.14

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B104E #434E10

analogous

#10244E #1B104E #3A104E

triadic

#1B104E #4E1B10 #104E1B

tetradic

#1B104E #4E1024 #434E10 #104E3A

square

#1B104E #4E1024 #434E10 #104E3A

split-complementary

#1B104E #4E3A10 #244E10

monochromatic

#090519 #09061B #1B104E #2D1A81 #3E25B4

Accessibility & contrast

On white

17.06

#1B104E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.23

#1B104E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B104E

17.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B104E	#FFFFFF	#000000	##FFFFFF
##1B104E	1.00	17.06	1.23	17.06
#FFFFFF	17.06	1.00	21.00	1.00
#000000	1.23	21.00	1.00	21.00
##FFFFFF	17.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001E50

Deuteranopia (green-blind)

#001A4D

Tritanopia (blue-blind)

#00212E

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #1b104e;
/* rgb */ color: rgb(27, 16, 78);
/* oklch */ color: oklch(23.7% 0.107 282.7);

Tailwind

colors: {
  custom: {
    50: '#5f4f80',
    500: '#1b104e',
    950: '#000000',
  },
}

SCSS

$custom: #1b104e;
$custom-light: #5f4f80;
$custom-dark: #000000;

JSON

{
  "hex": "#1b104e",
  "rgb": {
    "r": 27,
    "g": 16,
    "b": 78
  },
  "hsl": {
    "h": 250.645,
    "s": 65.957,
    "l": 18.431
  },
  "oklch": {
    "l": 0.23702,
    "c": 0.10677,
    "h": 282.7
  },
  "luminance": 0.01154
}

Semantic roles & 50–950 ramp

primary

#1B104E

secondary

#798832

accent

#E93FCB

background

#F5F4F7

surface

#EAE7EE

border

#C6C3C9

text

#05020A

muted

#79787C

Preview Lab

Preview with #1B104E

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

Preview Lab → · Contrast checker → · Palette generator →