#011131#011131

#011131 is a very dark, moderate blue. Relative luminance 0.006; OKLCH L 18.7% C 0.069 H 259.4°. Best body text is #FFFFFF at 18.65:1 contrast (WCAG AA passes).

Color values

HEX	#011131
RGB	rgb(1, 17, 49)
HSL	hsl(220, 96%, 10%)
HSV	hsv(220, 98%, 19%)
CMYK	cmyk(98%, 65.3%, 0%, 80.8%)
CIE-LAB	lab(5.68, 6.93, -22.93)
CIE-LCH	lch(5.68, 23.96, 286.82°)
OKLab	oklab(18.73% -0.0127 -0.0676)
OKLCH	oklch(18.73% 0.069 259.4)
XYZ	xyz(0.7671, 0.6290, 2.9861)
Luminance	0.0063 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 5.54

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#011131 #312101

analogous

#012931 #011131 #090131

triadic

#011131 #310111 #113101

tetradic

#011131 #310129 #312101 #013109

square

#011131 #310129 #312101 #013109

split-complementary

#011131 #310901 #293101

monochromatic

#010A1E #010A1E #011131 #02266D #033BA9

Accessibility & contrast

On white

18.65

#011131 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.13

#011131 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #011131

18.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##011131	#FFFFFF	#000000	##FFFFFF
##011131	1.00	18.65	1.13	18.65
#FFFFFF	18.65	1.00	21.00	1.00
#000000	1.13	21.00	1.00	21.00
##FFFFFF	18.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001532

Deuteranopia (green-blind)

#001030

Tritanopia (blue-blind)

#00191E

Achromatopsia (no color)

#131313

Design tokens & code

CSS

--color: #011131;
/* rgb */ color: rgb(1, 17, 49);
/* oklch */ color: oklch(18.7% 0.069 259.4);

Tailwind

colors: {
  custom: {
    50: '#4a4f69',
    500: '#011131',
    950: '#000000',
  },
}

SCSS

$custom: #011131;
$custom-light: #4a4f69;
$custom-dark: #000000;

JSON

{
  "hex": "#011131",
  "rgb": {
    "r": 1,
    "g": 17,
    "b": 49
  },
  "hsl": {
    "h": 220,
    "s": 96,
    "l": 9.804
  },
  "oklch": {
    "l": 0.18725,
    "c": 0.06878,
    "h": 259.4
  },
  "luminance": 0.00629
}

Semantic roles & 50–950 ramp

primary

#011131

secondary

#775717

accent

#B829FF

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#010106

muted

#77777A

Preview Lab

Preview with #011131

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

Preview Lab → · Contrast checker → · Palette generator →