#13337B#13337B

#13337B is a dark, vivid blue. Relative luminance 0.039; OKLCH L 34.6% C 0.129 H 263.2°. Best body text is #FFFFFF at 11.75:1 contrast (WCAG AA passes).

Color values

HEX	#13337B
RGB	rgb(19, 51, 123)
HSL	hsl(222, 73%, 28%)
HSV	hsv(222, 85%, 48%)
CMYK	cmyk(84.6%, 58.5%, 0%, 51.8%)
CIE-LAB	lab(23.46, 17.60, -44.18)
CIE-LCH	lch(23.46, 47.56, 291.72°)
OKLab	oklab(34.64% -0.0152 -0.1276)
OKLCH	oklch(34.64% 0.129 263.2)
XYZ	xyz(5.0263, 3.9356, 19.2298)
Luminance	0.0394 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#13337B #7B5B13

analogous

#13677B #13337B #27137B

triadic

#13337B #7B1333 #337B13

tetradic

#13337B #7B1367 #7B5B13 #137B27

square

#13337B #7B1367 #7B5B13 #137B27

split-complementary

#13337B #7B2713 #677B13

monochromatic

#040B1B #0B1D46 #13337B #1B49B0 #2A62DE

Accessibility & contrast

On white

11.75

#13337B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#13337B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #13337B

11.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##13337B	#FFFFFF	#000000	##FFFFFF
##13337B	1.00	11.75	1.79	11.75
#FFFFFF	11.75	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D7D

Deuteranopia (green-blind)

#00337A

Tritanopia (blue-blind)

#004551

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #13337b;
/* rgb */ color: rgb(19, 51, 123);
/* oklch */ color: oklch(34.6% 0.129 263.2);

Tailwind

colors: {
  custom: {
    50: '#656aa2',
    500: '#13337b',
    950: '#000000',
  },
}

SCSS

$custom: #13337b;
$custom-light: #656aa2;
$custom-dark: #000000;

JSON

{
  "hex": "#13337b",
  "rgb": {
    "r": 19,
    "g": 51,
    "b": 123
  },
  "hsl": {
    "h": 221.538,
    "s": 73.239,
    "l": 27.843
  },
  "oklch": {
    "l": 0.34643,
    "c": 0.12851,
    "h": 263.2
  },
  "luminance": 0.03936
}

Semantic roles & 50–950 ramp

primary

#13337B

secondary

#B18C39

accent

#B738F0

background

#F6F6FA

surface

#EBEBF3

border

#C6C6CD

text

#06060F

muted

#7A7A7F

Preview Lab

Preview with #13337B

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

Preview Lab → · Contrast checker → · Palette generator →