#010F2B#010F2B

#010F2B is a very dark, moderate blue. Relative luminance 0.005; OKLCH L 17.6% C 0.062 H 258.8°. Best body text is #FFFFFF at 19.01:1 contrast (WCAG AA passes).

Color values

HEX	#010F2B
RGB	rgb(1, 15, 43)
HSL	hsl(220, 95%, 9%)
HSV	hsv(220, 98%, 17%)
CMYK	cmyk(97.7%, 65.1%, 0%, 83.1%)
CIE-LAB	lab(4.72, 5.03, -19.99)
CIE-LCH	lch(4.72, 20.61, 284.11°)
OKLab	oklab(17.57% -0.012 -0.0606)
OKLCH	oklch(17.57% 0.062 258.8)
XYZ	xyz(0.6192, 0.5224, 2.3532)
Luminance	0.0052 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.67

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#010F2B #2B1D01

analogous

#01242B #010F2B #08012B

triadic

#010F2B #2B010F #0F2B01

tetradic

#010F2B #2B0124 #2B1D01 #012B08

square

#010F2B #2B0124 #2B1D01 #012B08

split-complementary

#010F2B #2B0801 #242B01

monochromatic

#010A1E #010A1E #010F2B #022467 #0439A3

Accessibility & contrast

On white

19.01

#010F2B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.10

#010F2B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #010F2B

19.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##010F2B	#FFFFFF	#000000	##FFFFFF
##010F2B	1.00	19.01	1.10	19.01
#FFFFFF	19.01	1.00	21.00	1.00
#000000	1.10	21.00	1.00	21.00
##FFFFFF	19.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00122C

Deuteranopia (green-blind)

#000E2A

Tritanopia (blue-blind)

#00161B

Achromatopsia (no color)

#101010

Design tokens & code

CSS

--color: #010f2b;
/* rgb */ color: rgb(1, 15, 43);
/* oklch */ color: oklch(17.6% 0.062 258.8);

Tailwind

colors: {
  custom: {
    50: '#484e64',
    500: '#010f2b',
    950: '#000000',
  },
}

SCSS

$custom: #010f2b;
$custom-light: #484e64;
$custom-dark: #000000;

JSON

{
  "hex": "#010f2b",
  "rgb": {
    "r": 1,
    "g": 15,
    "b": 43
  },
  "hsl": {
    "h": 220,
    "s": 95.455,
    "l": 8.627
  },
  "oklch": {
    "l": 0.17566,
    "c": 0.06182,
    "h": 258.8
  },
  "luminance": 0.00523
}

Semantic roles & 50–950 ramp

primary

#010F2B

secondary

#715317

accent

#B829FF

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#010105

muted

#77777A

Preview Lab

Preview with #010F2B

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

Preview Lab → · Contrast checker → · Palette generator →