#010A2B#010A2B

#010A2B is a very dark, moderate blue. Relative luminance 0.004; OKLCH L 16.2% C 0.070 H 262.9°. Best body text is #FFFFFF at 19.45:1 contrast (WCAG AA passes).

Color values

HEX	#010A2B
RGB	rgb(1, 10, 43)
HSL	hsl(227, 95%, 9%)
HSV	hsv(227, 98%, 17%)
CMYK	cmyk(97.7%, 76.7%, 0%, 83.1%)
CIE-LAB	lab(3.59, 7.32, -21.76)
CIE-LCH	lch(3.59, 22.96, 288.59°)
OKLab	oklab(16.25% -0.0086 -0.0691)
OKLCH	oklch(16.25% 0.07 262.9)
XYZ	xyz(0.5569, 0.3979, 2.3325)
Luminance	0.0040 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 5.27

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#010A2B #2B2201

analogous

#011F2B #010A2B #0D012B

triadic

#010A2B #2B010A #0A2B01

tetradic

#010A2B #2B011F #2B2201 #012B0D

square

#010A2B #2B011F #2B2201 #012B0D

split-complementary

#010A2B #2B0D01 #1F2B01

monochromatic

#01071E #01071E #010A2B #021867 #0426A3

Accessibility & contrast

On white

19.45

#010A2B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.08

#010A2B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #010A2B

19.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##010A2B	#FFFFFF	#000000	##FFFFFF
##010A2B	1.00	19.45	1.08	19.45
#FFFFFF	19.45	1.00	21.00	1.00
#000000	1.08	21.00	1.00	21.00
##FFFFFF	19.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#000F2C

Deuteranopia (green-blind)

#000B2A

Tritanopia (blue-blind)

#001319

Achromatopsia (no color)

#0D0D0D

Design tokens & code

CSS

--color: #010a2b;
/* rgb */ color: rgb(1, 10, 43);
/* oklch */ color: oklch(16.2% 0.070 262.9);

Tailwind

colors: {
  custom: {
    50: '#484b64',
    500: '#010a2b',
    950: '#000000',
  },
}

SCSS

$custom: #010a2b;
$custom-light: #484b64;
$custom-dark: #000000;

JSON

{
  "hex": "#010a2b",
  "rgb": {
    "r": 1,
    "g": 10,
    "b": 43
  },
  "hsl": {
    "h": 227.143,
    "s": 95.455,
    "l": 8.627
  },
  "oklch": {
    "l": 0.16248,
    "c": 0.06965,
    "h": 262.9
  },
  "luminance": 0.00398
}

Semantic roles & 50–950 ramp

primary

#010A2B

secondary

#715E17

accent

#D129FF

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#010105

muted

#77777A

Preview Lab

Preview with #010A2B

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

Preview Lab → · Contrast checker → · Palette generator →