#091231#091231

#091231 is a very dark, moderate blue. Relative luminance 0.007; OKLCH L 19.6% C 0.063 H 267.9°. Best body text is #FFFFFF at 18.38:1 contrast (WCAG AA passes).

Color values

HEX	#091231
RGB	rgb(9, 18, 49)
HSL	hsl(227, 69%, 11%)
HSV	hsv(227, 82%, 19%)
CMYK	cmyk(81.6%, 63.3%, 0%, 80.8%)
CIE-LAB	lab(6.44, 8.41, -21.70)
CIE-LCH	lch(6.44, 23.27, 291.19°)
OKLab	oklab(19.57% -0.0023 -0.0629)
OKLCH	oklch(19.57% 0.063 267.9)
XYZ	xyz(0.8831, 0.7124, 2.9961)
Luminance	0.0071 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 5.45

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#091231 #312809

analogous

#092631 #091231 #140931

triadic

#091231 #310912 #123109

tetradic

#091231 #310926 #312809 #093114

square

#091231 #310926 #312809 #093114

split-complementary

#091231 #311409 #263109

monochromatic

#05091A #05091A #091231 #122565 #1C3898

Accessibility & contrast

On white

18.38

#091231 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.14

#091231 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #091231

18.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##091231	#FFFFFF	#000000	##FFFFFF
##091231	1.00	18.38	1.14	18.38
#FFFFFF	18.38	1.00	21.00	1.00
#000000	1.14	21.00	1.00	21.00
##FFFFFF	18.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#021632

Deuteranopia (green-blind)

#001330

Tritanopia (blue-blind)

#00191F

Achromatopsia (no color)

#141414

Design tokens & code

CSS

--color: #091231;
/* rgb */ color: rgb(9, 18, 49);
/* oklch */ color: oklch(19.6% 0.063 267.9);

Tailwind

colors: {
  custom: {
    50: '#4e4f69',
    500: '#091231',
    950: '#000000',
  },
}

SCSS

$custom: #091231;
$custom-light: #4e4f69;
$custom-dark: #000000;

JSON

{
  "hex": "#091231",
  "rgb": {
    "r": 9,
    "g": 18,
    "b": 49
  },
  "hsl": {
    "h": 226.5,
    "s": 68.966,
    "l": 11.373
  },
  "oklch": {
    "l": 0.1957,
    "c": 0.06297,
    "h": 267.9
  },
  "luminance": 0.00712
}

Semantic roles & 50–950 ramp

primary

#091231

secondary

#6F5F27

accent

#C43CEC

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#020206

muted

#78787A

Preview Lab

Preview with #091231

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

Preview Lab → · Contrast checker → · Palette generator →