#03102B#03102B

#03102B is a very dark, muted blue. Relative luminance 0.006; OKLCH L 18.0% C 0.059 H 260.7°. Best body text is #FFFFFF at 18.87:1 contrast (WCAG AA passes).

Color values

HEX	#03102B
RGB	rgb(3, 16, 43)
HSL	hsl(221, 87%, 9%)
HSV	hsv(221, 93%, 17%)
CMYK	cmyk(93%, 62.8%, 0%, 83.1%)
CIE-LAB	lab(5.10, 5.01, -19.38)
CIE-LCH	lch(5.10, 20.02, 284.50°)
OKLab	oklab(18.01% -0.0095 -0.058)
OKLCH	oklch(18.01% 0.059 260.7)
XYZ	xyz(0.6587, 0.5643, 2.3592)
Luminance	0.0056 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.88

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#03102B #2B1E03

analogous

#03242B #03102B #0A032B

triadic

#03102B #2B0310 #102B03

tetradic

#03102B #2B0324 #2B1E03 #032B0A

square

#03102B #2B0324 #2B1E03 #032B0A

split-complementary

#03102B #2B0A03 #242B03

monochromatic

#020B1D #020B1D #03102B #072564 #0B3B9D

Accessibility & contrast

On white

18.87

#03102B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#03102B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #03102B

18.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##03102B	#FFFFFF	#000000	##FFFFFF
##03102B	1.00	18.87	1.11	18.87
#FFFFFF	18.87	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	18.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#02132C

Deuteranopia (green-blind)

#000F2A

Tritanopia (blue-blind)

#00171B

Achromatopsia (no color)

#111111

Design tokens & code

CSS

--color: #03102b;
/* rgb */ color: rgb(3, 16, 43);
/* oklch */ color: oklch(18.0% 0.059 260.7);

Tailwind

colors: {
  custom: {
    50: '#494e64',
    500: '#03102b',
    950: '#000000',
  },
}

SCSS

$custom: #03102b;
$custom-light: #494e64;
$custom-dark: #000000;

JSON

{
  "hex": "#03102b",
  "rgb": {
    "r": 3,
    "g": 16,
    "b": 43
  },
  "hsl": {
    "h": 220.5,
    "s": 86.957,
    "l": 9.02
  },
  "oklch": {
    "l": 0.18012,
    "c": 0.0588,
    "h": 260.7
  },
  "luminance": 0.00564
}

Semantic roles & 50–950 ramp

primary

#03102B

secondary

#6F541B

accent

#B92BFD

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#010105

muted

#77777A

Preview Lab

Preview with #03102B

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

Preview Lab → · Contrast checker → · Palette generator →