#05103B#05103B

#05103B is a very dark, moderate blue. Relative luminance 0.007; OKLCH L 19.8% C 0.084 H 266.3°. Best body text is #FFFFFF at 18.36:1 contrast (WCAG AA passes).

Color values

HEX	#05103B
RGB	rgb(5, 16, 59)
HSL	hsl(228, 84%, 13%)
HSV	hsv(228, 92%, 23%)
CMYK	cmyk(91.5%, 72.9%, 0%, 76.9%)
CIE-LAB	lab(6.49, 13.96, -28.91)
CIE-LCH	lch(6.49, 32.10, 295.77°)
OKLab	oklab(19.85% -0.0055 -0.0842)
OKLCH	oklch(19.85% 0.084 266.3)
XYZ	xyz(1.0370, 0.7185, 4.2209)
Luminance	0.0072 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#05103B #3B3005

analogous

#052B3B #05103B #15053B

triadic

#05103B #3B0510 #103B05

tetradic

#05103B #3B052B #3B3005 #053B15

square

#05103B #3B052B #3B3005 #053B15

split-complementary

#05103B #3B1505 #2B3B05

monochromatic

#02081C #02081C #05103B #0A1F73 #0F2FAC

Accessibility & contrast

On white

18.36

#05103B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.14

#05103B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #05103B

18.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##05103B	#FFFFFF	#000000	##FFFFFF
##05103B	1.00	18.36	1.14	18.36
#FFFFFF	18.36	1.00	21.00	1.00
#000000	1.14	21.00	1.00	21.00
##FFFFFF	18.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00173C

Deuteranopia (green-blind)

#00123A

Tritanopia (blue-blind)

#001B23

Achromatopsia (no color)

#141414

Design tokens & code

CSS

--color: #05103b;
/* rgb */ color: rgb(5, 16, 59);
/* oklch */ color: oklch(19.8% 0.084 266.3);

Tailwind

colors: {
  custom: {
    50: '#504e71',
    500: '#05103b',
    950: '#000000',
  },
}

SCSS

$custom: #05103b;
$custom-light: #504e71;
$custom-dark: #000000;

JSON

{
  "hex": "#05103b",
  "rgb": {
    "r": 5,
    "g": 16,
    "b": 59
  },
  "hsl": {
    "h": 227.778,
    "s": 84.375,
    "l": 12.549
  },
  "oklch": {
    "l": 0.19849,
    "c": 0.0844,
    "h": 266.3
  },
  "luminance": 0.00719
}

Semantic roles & 50–950 ramp

primary

#05103B

secondary

#7C6920

accent

#D12DFB

background

#F4F4F6

surface

#E7E7EC

border

#C3C3C7

text

#020108

muted

#78777B

Preview Lab

Preview with #05103B

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

Preview Lab → · Contrast checker → · Palette generator →