#010C21#010C21

#010C21 is a very dark, muted blue. Relative luminance 0.004; OKLCH L 15.7% C 0.049 H 256.7°. Best body text is #FFFFFF at 19.52:1 contrast (WCAG AA passes).

Color values

HEX	#010C21
RGB	rgb(1, 12, 33)
HSL	hsl(219, 94%, 7%)
HSV	hsv(219, 97%, 13%)
CMYK	cmyk(97%, 63.6%, 0%, 87.1%)
CIE-LAB	lab(3.42, 2.38, -14.34)
CIE-LCH	lch(3.42, 14.54, 279.42°)
OKLab	oklab(15.71% -0.0113 -0.0479)
OKLCH	oklch(15.71% 0.049 256.7)
XYZ	xyz(0.4184, 0.3791, 1.4897)
Luminance	0.0038 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#010C21 #211601

analogous

#011C21 #010C21 #060121

triadic

#010C21 #21010C #0C2101

tetradic

#010C21 #21011C #211601 #012106

square

#010C21 #21011C #211601 #012106

split-complementary

#010C21 #210601 #1C2101

monochromatic

#010B1E #010B1E #010C21 #03225C #053798

Accessibility & contrast

On white

19.52

#010C21 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.08

#010C21 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #010C21

19.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##010C21	#FFFFFF	#000000	##FFFFFF
##010C21	1.00	19.52	1.08	19.52
#FFFFFF	19.52	1.00	21.00	1.00
#000000	1.08	21.00	1.00	21.00
##FFFFFF	19.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#030E22

Deuteranopia (green-blind)

#000B21

Tritanopia (blue-blind)

#001114

Achromatopsia (no color)

#0C0C0C

Design tokens & code

CSS

--color: #010c21;
/* rgb */ color: rgb(1, 12, 33);
/* oklch */ color: oklch(15.7% 0.049 256.7);

Tailwind

colors: {
  custom: {
    50: '#464c5c',
    500: '#010c21',
    950: '#000000',
  },
}

SCSS

$custom: #010c21;
$custom-light: #464c5c;
$custom-dark: #000000;

JSON

{
  "hex": "#010c21",
  "rgb": {
    "r": 1,
    "g": 12,
    "b": 33
  },
  "hsl": {
    "h": 219.375,
    "s": 94.118,
    "l": 6.667
  },
  "oklch": {
    "l": 0.15709,
    "c": 0.04922,
    "h": 256.7
  },
  "luminance": 0.00379
}

Semantic roles & 50–950 ramp

primary

#010C21

secondary

#684C15

accent

#B529FF

background

#F4F4F5

surface

#E6E7E9

border

#C2C3C5

text

#000104

muted

#777779

Preview Lab

Preview with #010C21

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

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