#1F012B#1F012B

#1F012B is a very dark, moderate purple. Relative luminance 0.005; OKLCH L 18.1% C 0.086 H 314.6°. Best body text is #FFFFFF at 19.14:1 contrast (WCAG AA passes).

Color values

HEX	#1F012B
RGB	rgb(31, 1, 43)
HSL	hsl(283, 95%, 9%)
HSV	hsv(283, 98%, 17%)
CMYK	cmyk(27.9%, 97.7%, 0%, 83.1%)
CIE-LAB	lab(4.40, 22.05, -20.31)
CIE-LCH	lch(4.40, 29.98, 317.34°)
OKLab	oklab(18.11% 0.0602 -0.0611)
OKLCH	oklch(18.11% 0.086 314.6)
XYZ	xyz(1.0119, 0.4875, 2.3258)
Luminance	0.0049 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F012B #0D2B01

analogous

#0A012B #1F012B #2B0122

triadic

#1F012B #2B1F01 #012B1F

tetradic

#1F012B #2B0A01 #0D2B01 #01222B

square

#1F012B #2B0A01 #0D2B01 #01222B

split-complementary

#1F012B #222B01 #012B0A

monochromatic

#16011E #16011E #1F012B #4A0267 #7504A3

Accessibility & contrast

On white

19.14

#1F012B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.10

#1F012B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F012B

19.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F012B	#FFFFFF	#000000	##FFFFFF
##1F012B	1.00	19.14	1.10	19.14
#FFFFFF	19.14	1.00	21.00	1.00
#000000	1.10	21.00	1.00	21.00
##FFFFFF	19.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#000D2C

Deuteranopia (green-blind)

#00102A

Tritanopia (blue-blind)

#1E0915

Achromatopsia (no color)

#0F0F0F

Design tokens & code

CSS

--color: #1f012b;
/* rgb */ color: rgb(31, 1, 43);
/* oklch */ color: oklch(18.1% 0.086 314.6);

Tailwind

colors: {
  custom: {
    50: '#5c4664',
    500: '#1f012b',
    950: '#000000',
  },
}

SCSS

$custom: #1f012b;
$custom-light: #5c4664;
$custom-dark: #000000;

JSON

{
  "hex": "#1f012b",
  "rgb": {
    "r": 31,
    "g": 1,
    "b": 43
  },
  "hsl": {
    "h": 282.857,
    "s": 95.455,
    "l": 8.627
  },
  "oklch": {
    "l": 0.18113,
    "c": 0.08574,
    "h": 314.6
  },
  "luminance": 0.00487
}

Semantic roles & 50–950 ramp

primary

#1F012B

secondary

#307117

accent

#FF2966

background

#F5F3F6

surface

#E9E5EB

border

#C5C1C6

text

#040005

muted

#79777A

Preview Lab

Preview with #1F012B

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

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