#010F31#010F31

#010F31 is a very dark, moderate blue. Relative luminance 0.006; OKLCH L 18.2% C 0.072 H 261.0°. Best body text is #FFFFFF at 18.85:1 contrast (WCAG AA passes).

Color values

HEX	#010F31
RGB	rgb(1, 15, 49)
HSL	hsl(223, 96%, 10%)
HSV	hsv(223, 98%, 19%)
CMYK	cmyk(98%, 69.4%, 0%, 80.8%)
CIE-LAB	lab(5.15, 8.03, -23.79)
CIE-LCH	lch(5.15, 25.10, 288.64°)
OKLab	oklab(18.2% -0.0113 -0.071)
OKLCH	oklch(18.2% 0.072 261)
XYZ	xyz(0.7375, 0.5698, 2.9762)
Luminance	0.0057 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 4.85

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#010F31 #312301

analogous

#012731 #010F31 #0B0131

triadic

#010F31 #31010F #0F3101

tetradic

#010F31 #310127 #312301 #01310B

square

#010F31 #310127 #312301 #01310B

split-complementary

#010F31 #310B01 #273101

monochromatic

#01091E #01091E #010F31 #02216D #0334A9

Accessibility & contrast

On white

18.85

#010F31 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#010F31 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #010F31

18.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##010F31	#FFFFFF	#000000	##FFFFFF
##010F31	1.00	18.85	1.11	18.85
#FFFFFF	18.85	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	18.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001432

Deuteranopia (green-blind)

#000F30

Tritanopia (blue-blind)

#00181E

Achromatopsia (no color)

#111111

Design tokens & code

CSS

--color: #010f31;
/* rgb */ color: rgb(1, 15, 49);
/* oklch */ color: oklch(18.2% 0.072 261.0);

Tailwind

colors: {
  custom: {
    50: '#4a4d69',
    500: '#010f31',
    950: '#000000',
  },
}

SCSS

$custom: #010f31;
$custom-light: #4a4d69;
$custom-dark: #000000;

JSON

{
  "hex": "#010f31",
  "rgb": {
    "r": 1,
    "g": 15,
    "b": 49
  },
  "hsl": {
    "h": 222.5,
    "s": 96,
    "l": 9.804
  },
  "oklch": {
    "l": 0.18199,
    "c": 0.07187,
    "h": 261
  },
  "luminance": 0.0057
}

Semantic roles & 50–950 ramp

primary

#010F31

secondary

#775B17

accent

#C129FF

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#010106

muted

#77777A

Preview Lab

Preview with #010F31

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

Preview Lab → · Contrast checker → · Palette generator →