#03103B#03103B

#03103B is a very dark, moderate blue. Relative luminance 0.007; OKLCH L 19.7% C 0.085 H 264.4°. Best body text is #FFFFFF at 18.40:1 contrast (WCAG AA passes).

Color values

HEX	#03103B
RGB	rgb(3, 16, 59)
HSL	hsl(226, 90%, 12%)
HSV	hsv(226, 95%, 23%)
CMYK	cmyk(94.9%, 72.9%, 0%, 76.9%)
CIE-LAB	lab(6.37, 13.56, -29.11)
CIE-LCH	lch(6.37, 32.11, 294.98°)
OKLab	oklab(19.71% -0.0083 -0.0849)
OKLCH	oklch(19.71% 0.085 264.4)
XYZ	xyz(1.0120, 0.7056, 4.2197)
Luminance	0.0071 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 2.87

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#03103B #3B2E03

analogous

#032C3B #03103B #12033B

triadic

#03103B #3B0310 #103B03

tetradic

#03103B #3B032C #3B2E03 #033B12

square

#03103B #3B032C #3B2E03 #033B12

split-complementary

#03103B #3B1203 #2C3B03

monochromatic

#01081D #01081D #03103B #062075 #0930AF

Accessibility & contrast

On white

18.40

#03103B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.14

#03103B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #03103B

18.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##03103B	#FFFFFF	#000000	##FFFFFF
##03103B	1.00	18.40	1.14	18.40
#FFFFFF	18.40	1.00	21.00	1.00
#000000	1.14	21.00	1.00	21.00
##FFFFFF	18.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00173C

Deuteranopia (green-blind)

#00113A

Tritanopia (blue-blind)

#001B23

Achromatopsia (no color)

#141414

Design tokens & code

CSS

--color: #03103b;
/* rgb */ color: rgb(3, 16, 59);
/* oklch */ color: oklch(19.7% 0.085 264.4);

Tailwind

colors: {
  custom: {
    50: '#4f4e71',
    500: '#03103b',
    950: '#000000',
  },
}

SCSS

$custom: #03103b;
$custom-light: #4f4e71;
$custom-dark: #000000;

JSON

{
  "hex": "#03103b",
  "rgb": {
    "r": 3,
    "g": 16,
    "b": 59
  },
  "hsl": {
    "h": 226.071,
    "s": 90.323,
    "l": 12.157
  },
  "oklch": {
    "l": 0.19711,
    "c": 0.08535,
    "h": 264.4
  },
  "luminance": 0.00706
}

Semantic roles & 50–950 ramp

primary

#03103B

secondary

#7E671C

accent

#CD29FF

background

#F4F4F6

surface

#E7E7EC

border

#C3C3C7

text

#020108

muted

#78777B

Preview Lab

Preview with #03103B

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

Preview Lab → · Contrast checker → · Palette generator →