#010A21#010A21

#010A21 is a very dark, muted blue. Relative luminance 0.003; OKLCH L 15.1% C 0.052 H 259.6°. Best body text is #FFFFFF at 19.69:1 contrast (WCAG AA passes).

Color values

HEX	#010A21
RGB	rgb(1, 10, 33)
HSL	hsl(223, 94%, 7%)
HSV	hsv(223, 97%, 13%)
CMYK	cmyk(97%, 69.7%, 0%, 87.1%)
CIE-LAB	lab(3.01, 3.22, -14.98)
CIE-LCH	lch(3.01, 15.32, 282.15°)
OKLab	oklab(15.13% -0.0095 -0.0516)
OKLCH	oklch(15.13% 0.052 259.6)
XYZ	xyz(0.3955, 0.3333, 1.4820)
Luminance	0.0033 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#010A21 #211801

analogous

#011A21 #010A21 #080121

triadic

#010A21 #21010A #0A2101

tetradic

#010A21 #21011A #211801 #012108

square

#010A21 #21011A #211801 #012108

split-complementary

#010A21 #210801 #1A2101

monochromatic

#01091E #01091E #010A21 #031C5C #052E98

Accessibility & contrast

On white

19.69

#010A21 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.07

#010A21 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #010A21

19.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##010A21	#FFFFFF	#000000	##FFFFFF
##010A21	1.00	19.69	1.07	19.69
#FFFFFF	19.69	1.00	21.00	1.00
#000000	1.07	21.00	1.00	21.00
##FFFFFF	19.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#000D22

Deuteranopia (green-blind)

#000921

Tritanopia (blue-blind)

#001013

Achromatopsia (no color)

#0B0B0B

Design tokens & code

CSS

--color: #010a21;
/* rgb */ color: rgb(1, 10, 33);
/* oklch */ color: oklch(15.1% 0.052 259.6);

Tailwind

colors: {
  custom: {
    50: '#464b5c',
    500: '#010a21',
    950: '#000000',
  },
}

SCSS

$custom: #010a21;
$custom-light: #464b5c;
$custom-dark: #000000;

JSON

{
  "hex": "#010a21",
  "rgb": {
    "r": 1,
    "g": 10,
    "b": 33
  },
  "hsl": {
    "h": 223.125,
    "s": 94.118,
    "l": 6.667
  },
  "oklch": {
    "l": 0.15126,
    "c": 0.05245,
    "h": 259.6
  },
  "luminance": 0.00333
}

Semantic roles & 50–950 ramp

primary

#010A21

secondary

#685115

accent

#C329FF

background

#F4F4F5

surface

#E6E7E9

border

#C2C3C5

text

#000104

muted

#777779

Preview Lab

Preview with #010A21

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

Preview Lab → · Contrast checker → · Palette generator →