#010B30#010B30

#010B30 is a very dark, moderate blue. Relative luminance 0.005; OKLCH L 17.1% C 0.076 H 263.2°. Best body text is #FFFFFF at 19.23:1 contrast (WCAG AA passes).

Color values

HEX	#010B30
RGB	rgb(1, 11, 48)
HSL	hsl(227, 96%, 10%)
HSV	hsv(227, 98%, 19%)
CMYK	cmyk(97.9%, 77.1%, 0%, 81.2%)
CIE-LAB	lab(4.15, 9.39, -24.64)
CIE-LCH	lch(4.15, 26.37, 290.85°)
OKLab	oklab(17.09% -0.009 -0.0758)
OKLCH	oklch(17.09% 0.076 263.2)
XYZ	xyz(0.6655, 0.4591, 2.8493)
Luminance	0.0046 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 3.98

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#010B30 #302601

analogous

#012330 #010B30 #0F0130

triadic

#010B30 #30010B #0B3001

tetradic

#010B30 #300123 #302601 #01300F

square

#010B30 #300123 #302601 #01300F

split-complementary

#010B30 #300F01 #233001

monochromatic

#01071E #01071E #010B30 #02196C #0326A8

Accessibility & contrast

On white

19.23

#010B30 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.09

#010B30 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #010B30

19.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##010B30	#FFFFFF	#000000	##FFFFFF
##010B30	1.00	19.23	1.09	19.23
#FFFFFF	19.23	1.00	21.00	1.00
#000000	1.09	21.00	1.00	21.00
##FFFFFF	19.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001131

Deuteranopia (green-blind)

#000C2F

Tritanopia (blue-blind)

#00151C

Achromatopsia (no color)

#0F0F0F

Design tokens & code

CSS

--color: #010b30;
/* rgb */ color: rgb(1, 11, 48);
/* oklch */ color: oklch(17.1% 0.076 263.2);

Tailwind

colors: {
  custom: {
    50: '#494b68',
    500: '#010b30',
    950: '#000000',
  },
}

SCSS

$custom: #010b30;
$custom-light: #494b68;
$custom-dark: #000000;

JSON

{
  "hex": "#010b30",
  "rgb": {
    "r": 1,
    "g": 11,
    "b": 48
  },
  "hsl": {
    "h": 227.234,
    "s": 95.918,
    "l": 9.608
  },
  "oklch": {
    "l": 0.1709,
    "c": 0.07631,
    "h": 263.2
  },
  "luminance": 0.00459
}

Semantic roles & 50–950 ramp

primary

#010B30

secondary

#766217

accent

#D129FF

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#010106

muted

#77777A

Preview Lab

Preview with #010B30

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

Preview Lab → · Contrast checker → · Palette generator →