#03303B#03303B

#03303B is a dark, muted cyan. Relative luminance 0.024; OKLCH L 28.6% C 0.050 H 218.9°. Best body text is #FFFFFF at 14.10:1 contrast (WCAG AA passes).

Color values

HEX	#03303B
RGB	rgb(3, 48, 59)
HSL	hsl(192, 90%, 12%)
HSV	hsv(192, 95%, 23%)
CMYK	cmyk(94.9%, 18.6%, 0%, 76.9%)
CIE-LAB	lab(17.69, -9.89, -11.12)
CIE-LCH	lch(17.69, 14.88, 228.36°)
OKLab	oklab(28.64% -0.0386 -0.0312)
OKLCH	oklch(28.64% 0.05 218.9)
XYZ	xyz(1.8836, 2.4488, 4.5102)
Luminance	0.0245 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#03303B #3B0E03

analogous

#033B2A #03303B #03143B

triadic

#03303B #3B0330 #303B03

tetradic

#03303B #2A033B #3B0E03 #143B03

square

#03303B #2A033B #3B0E03 #143B03

split-complementary

#03303B #3B0314 #3B2A03

monochromatic

#01181D #01181D #03303B #065F75 #098FAF

Accessibility & contrast

On white

14.10

#03303B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.49

#03303B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #03303B

14.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##03303B	#FFFFFF	#000000	##FFFFFF
##03303B	1.00	14.10	1.49	14.10
#FFFFFF	14.10	1.00	21.00	1.00
#000000	1.49	21.00	1.00	21.00
##FFFFFF	14.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#292E3C

Deuteranopia (green-blind)

#22293B

Tritanopia (blue-blind)

#003434

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #03303b;
/* rgb */ color: rgb(3, 48, 59);
/* oklch */ color: oklch(28.6% 0.050 218.9);

Tailwind

colors: {
  custom: {
    50: '#4f6871',
    500: '#03303b',
    950: '#000000',
  },
}

SCSS

$custom: #03303b;
$custom-light: #4f6871;
$custom-dark: #000000;

JSON

{
  "hex": "#03303b",
  "rgb": {
    "r": 3,
    "g": 48,
    "b": 59
  },
  "hsl": {
    "h": 191.786,
    "s": 90.323,
    "l": 12.157
  },
  "oklch": {
    "l": 0.28638,
    "c": 0.04958,
    "h": 218.9
  },
  "luminance": 0.02449
}

Semantic roles & 50–950 ramp

primary

#03303B

secondary

#7E2F1C

accent

#5329FF

background

#F4F6F6

surface

#E7EBEC

border

#C3C6C7

text

#020607

muted

#787A7A

Preview Lab

Preview with #03303B

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

Preview Lab → · Contrast checker → · Palette generator →