#010B2F#010B2F

#010B2F is a very dark, moderate blue. Relative luminance 0.005; OKLCH L 17.0% C 0.075 H 263.0°. Best body text is #FFFFFF at 19.26:1 contrast (WCAG AA passes).

Color values

HEX	#010B2F
RGB	rgb(1, 11, 47)
HSL	hsl(227, 96%, 9%)
HSV	hsv(227, 98%, 18%)
CMYK	cmyk(97.9%, 76.6%, 0%, 81.6%)
CIE-LAB	lab(4.07, 8.87, -24.01)
CIE-LCH	lch(4.07, 25.60, 290.27°)
OKLab	oklab(16.97% -0.0091 -0.0741)
OKLCH	oklch(16.97% 0.075 263)
XYZ	xyz(0.6451, 0.4509, 2.7418)
Luminance	0.0045 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 4.28

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#010B2F #2F2501

analogous

#01222F #010B2F #0E012F

triadic

#010B2F #2F010B #0B2F01

tetradic

#010B2F #2F0122 #2F2501 #012F0E

square

#010B2F #2F0122 #2F2501 #012F0E

split-complementary

#010B2F #2F0E01 #222F01

monochromatic

#01071E #01071E #010B2F #02196B #0427A7

Accessibility & contrast

On white

19.26

#010B2F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.09

#010B2F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #010B2F

19.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##010B2F	#FFFFFF	#000000	##FFFFFF
##010B2F	1.00	19.26	1.09	19.26
#FFFFFF	19.26	1.00	21.00	1.00
#000000	1.09	21.00	1.00	21.00
##FFFFFF	19.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001130

Deuteranopia (green-blind)

#000C2E

Tritanopia (blue-blind)

#00151B

Achromatopsia (no color)

#0E0E0E

Design tokens & code

CSS

--color: #010b2f;
/* rgb */ color: rgb(1, 11, 47);
/* oklch */ color: oklch(17.0% 0.075 263.0);

Tailwind

colors: {
  custom: {
    50: '#494b68',
    500: '#010b2f',
    950: '#000000',
  },
}

SCSS

$custom: #010b2f;
$custom-light: #494b68;
$custom-dark: #000000;

JSON

{
  "hex": "#010b2f",
  "rgb": {
    "r": 1,
    "g": 11,
    "b": 47
  },
  "hsl": {
    "h": 226.957,
    "s": 95.833,
    "l": 9.412
  },
  "oklch": {
    "l": 0.1697,
    "c": 0.07469,
    "h": 263
  },
  "luminance": 0.00451
}

Semantic roles & 50–950 ramp

primary

#010B2F

secondary

#756017

accent

#D029FF

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#010106

muted

#77777A

Preview Lab

Preview with #010B2F

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

Preview Lab → · Contrast checker → · Palette generator →