#1F104C#1F104C

#1F104C is a very dark, moderate violet. Relative luminance 0.012; OKLCH L 23.9% C 0.103 H 287.2°. Best body text is #FFFFFF at 16.98:1 contrast (WCAG AA passes).

Color values

HEX	#1F104C
RGB	rgb(31, 16, 76)
HSL	hsl(255, 65%, 18%)
HSV	hsv(255, 79%, 30%)
CMYK	cmyk(59.2%, 78.9%, 0%, 70.2%)
CIE-LAB	lab(10.44, 25.33, -34.37)
CIE-LCH	lch(10.44, 42.70, 306.39°)
OKLab	oklab(23.9% 0.0307 -0.0988)
OKLCH	oklch(23.9% 0.103 287.2)
XYZ	xyz(2.0545, 1.1836, 6.9563)
Luminance	0.0118 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.45

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F104C #3D4C10

analogous

#101F4C #1F104C #3D104C

triadic

#1F104C #4C1F10 #104C1F

tetradic

#1F104C #4C101F #3D4C10 #104C3D

square

#1F104C #4C101F #3D4C10 #104C3D

split-complementary

#1F104C #4C3D10 #1F4C10

monochromatic

#0A0519 #0A0519 #1F104C #341B7F #4825B1

Accessibility & contrast

On white

16.98

#1F104C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.24

#1F104C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F104C

16.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F104C	#FFFFFF	#000000	##FFFFFF
##1F104C	1.00	16.98	1.24	16.98
#FFFFFF	16.98	1.00	21.00	1.00
#000000	1.24	21.00	1.00	21.00
##FFFFFF	16.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001E4E

Deuteranopia (green-blind)

#001B4B

Tritanopia (blue-blind)

#0D202C

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #1f104c;
/* rgb */ color: rgb(31, 16, 76);
/* oklch */ color: oklch(23.9% 0.103 287.2);

Tailwind

colors: {
  custom: {
    50: '#614f7f',
    500: '#1f104c',
    950: '#000000',
  },
}

SCSS

$custom: #1f104c;
$custom-light: #614f7f;
$custom-dark: #000000;

JSON

{
  "hex": "#1f104c",
  "rgb": {
    "r": 31,
    "g": 16,
    "b": 76
  },
  "hsl": {
    "h": 255,
    "s": 65.217,
    "l": 18.039
  },
  "oklch": {
    "l": 0.23904,
    "c": 0.10348,
    "h": 287.2
  },
  "luminance": 0.01184
}

Semantic roles & 50–950 ramp

primary

#1F104C

secondary

#718632

accent

#E840BE

background

#F5F4F7

surface

#EAE7EE

border

#C6C3C9

text

#05020A

muted

#79787C

Preview Lab

Preview with #1F104C

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

Preview Lab → · Contrast checker → · Palette generator →