#05123C#05123C

#05123C is a very dark, moderate blue. Relative luminance 0.008; OKLCH L 20.4% C 0.083 H 265.3°. Best body text is #FFFFFF at 18.13:1 contrast (WCAG AA passes).

Color values

HEX	#05123C
RGB	rgb(5, 18, 60)
HSL	hsl(226, 85%, 13%)
HSV	hsv(226, 92%, 24%)
CMYK	cmyk(91.7%, 70%, 0%, 76.5%)
CIE-LAB	lab(7.14, 13.14, -28.57)
CIE-LCH	lch(7.14, 31.44, 294.69°)
OKLab	oklab(20.42% -0.0068 -0.0828)
OKLCH	oklch(20.42% 0.083 265.3)
XYZ	xyz(1.0942, 0.7910, 4.3691)
Luminance	0.0079 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 3.36

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#05123C #3C2F05

analogous

#052D3C #05123C #13053C

triadic

#05123C #3C0512 #123C05

tetradic

#05123C #3C052D #3C2F05 #053C13

square

#05123C #3C052D #3C2F05 #053C13

split-complementary

#05123C #3C1305 #2D3C05

monochromatic

#02081C #02081C #05123C #0A2374 #0E34AD

Accessibility & contrast

On white

18.13

#05123C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.16

#05123C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #05123C

18.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##05123C	#FFFFFF	#000000	##FFFFFF
##05123C	1.00	18.13	1.16	18.13
#FFFFFF	18.13	1.00	21.00	1.00
#000000	1.16	21.00	1.00	21.00
##FFFFFF	18.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00183D

Deuteranopia (green-blind)

#00133B

Tritanopia (blue-blind)

#001D24

Achromatopsia (no color)

#161616

Design tokens & code

CSS

--color: #05123c;
/* rgb */ color: rgb(5, 18, 60);
/* oklch */ color: oklch(20.4% 0.083 265.3);

Tailwind

colors: {
  custom: {
    50: '#504f72',
    500: '#05123c',
    950: '#000000',
  },
}

SCSS

$custom: #05123c;
$custom-light: #504f72;
$custom-dark: #000000;

JSON

{
  "hex": "#05123c",
  "rgb": {
    "r": 5,
    "g": 18,
    "b": 60
  },
  "hsl": {
    "h": 225.818,
    "s": 84.615,
    "l": 12.745
  },
  "oklch": {
    "l": 0.20423,
    "c": 0.08308,
    "h": 265.3
  },
  "luminance": 0.00791
}

Semantic roles & 50–950 ramp

primary

#05123C

secondary

#7D6720

accent

#CA2DFB

background

#F4F4F6

surface

#E7E7EC

border

#C3C3C7

text

#020108

muted

#78777B

Preview Lab

Preview with #05123C

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

Preview Lab → · Contrast checker → · Palette generator →