#010D2B#010D2B

#010D2B is a very dark, moderate blue. Relative luminance 0.005; OKLCH L 17.0% C 0.065 H 260.7°. Best body text is #FFFFFF at 19.20:1 contrast (WCAG AA passes).

Color values

HEX	#010D2B
RGB	rgb(1, 13, 43)
HSL	hsl(223, 95%, 9%)
HSV	hsv(223, 98%, 17%)
CMYK	cmyk(97.7%, 69.8%, 0%, 83.1%)
CIE-LAB	lab(4.23, 6.02, -20.75)
CIE-LCH	lch(4.23, 21.61, 286.17°)
OKLab	oklab(17.02% -0.0105 -0.0641)
OKLCH	oklch(17.02% 0.065 260.7)
XYZ	xyz(0.5923, 0.4686, 2.3443)
Luminance	0.0047 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.05

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#010D2B #2B1F01

analogous

#01222B #010D2B #0A012B

triadic

#010D2B #2B010D #0D2B01

tetradic

#010D2B #2B0122 #2B1F01 #012B0A

square

#010D2B #2B0122 #2B1F01 #012B0A

split-complementary

#010D2B #2B0A01 #222B01

monochromatic

#01091E #01091E #010D2B #021F67 #0431A3

Accessibility & contrast

On white

19.20

#010D2B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.09

#010D2B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #010D2B

19.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##010D2B	#FFFFFF	#000000	##FFFFFF
##010D2B	1.00	19.20	1.09	19.20
#FFFFFF	19.20	1.00	21.00	1.00
#000000	1.09	21.00	1.00	21.00
##FFFFFF	19.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00112C

Deuteranopia (green-blind)

#000D2A

Tritanopia (blue-blind)

#00151A

Achromatopsia (no color)

#0F0F0F

Design tokens & code

CSS

--color: #010d2b;
/* rgb */ color: rgb(1, 13, 43);
/* oklch */ color: oklch(17.0% 0.065 260.7);

Tailwind

colors: {
  custom: {
    50: '#484c64',
    500: '#010d2b',
    950: '#000000',
  },
}

SCSS

$custom: #010d2b;
$custom-light: #484c64;
$custom-dark: #000000;

JSON

{
  "hex": "#010d2b",
  "rgb": {
    "r": 1,
    "g": 13,
    "b": 43
  },
  "hsl": {
    "h": 222.857,
    "s": 95.455,
    "l": 8.627
  },
  "oklch": {
    "l": 0.17022,
    "c": 0.06497,
    "h": 260.7
  },
  "luminance": 0.00469
}

Semantic roles & 50–950 ramp

primary

#010D2B

secondary

#715717

accent

#C229FF

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#010105

muted

#77777A

Preview Lab

Preview with #010D2B

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

Preview Lab → · Contrast checker → · Palette generator →