#01102B#01102B

#01102B is a very dark, moderate blue. Relative luminance 0.006; OKLCH L 17.8% C 0.060 H 257.7°. Best body text is #FFFFFF at 18.92:1 contrast (WCAG AA passes).

Color values

HEX	#01102B
RGB	rgb(1, 16, 43)
HSL	hsl(219, 95%, 9%)
HSV	hsv(219, 98%, 17%)
CMYK	cmyk(97.7%, 62.8%, 0%, 83.1%)
CIE-LAB	lab(4.98, 4.49, -19.57)
CIE-LCH	lch(4.98, 20.08, 282.92°)
OKLab	oklab(17.85% -0.0128 -0.0589)
OKLCH	oklch(17.85% 0.06 257.7)
XYZ	xyz(0.6337, 0.5514, 2.3581)
Luminance	0.0055 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 7.01

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#01102B #2B1C01

analogous

#01252B #01102B #07012B

triadic

#01102B #2B0110 #102B01

tetradic

#01102B #2B0125 #2B1C01 #012B07

square

#01102B #2B0125 #2B1C01 #012B07

split-complementary

#01102B #2B0701 #252B01

monochromatic

#010B1E #010B1E #01102B #022667 #043DA3

Accessibility & contrast

On white

18.92

#01102B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#01102B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #01102B

18.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##01102B	#FFFFFF	#000000	##FFFFFF
##01102B	1.00	18.92	1.11	18.92
#FFFFFF	18.92	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	18.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#02132C

Deuteranopia (green-blind)

#000F2A

Tritanopia (blue-blind)

#00171B

Achromatopsia (no color)

#111111

Design tokens & code

CSS

--color: #01102b;
/* rgb */ color: rgb(1, 16, 43);
/* oklch */ color: oklch(17.8% 0.060 257.7);

Tailwind

colors: {
  custom: {
    50: '#484e64',
    500: '#01102b',
    950: '#000000',
  },
}

SCSS

$custom: #01102b;
$custom-light: #484e64;
$custom-dark: #000000;

JSON

{
  "hex": "#01102b",
  "rgb": {
    "r": 1,
    "g": 16,
    "b": 43
  },
  "hsl": {
    "h": 218.571,
    "s": 95.455,
    "l": 8.627
  },
  "oklch": {
    "l": 0.17845,
    "c": 0.06025,
    "h": 257.7
  },
  "luminance": 0.00551
}

Semantic roles & 50–950 ramp

primary

#01102B

secondary

#715117

accent

#B229FF

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#010105

muted

#77777A

Preview Lab

Preview with #01102B

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

Preview Lab → · Contrast checker → · Palette generator →