#133381#133381

#133381 is a dark, vivid blue. Relative luminance 0.041; OKLCH L 35.2% C 0.137 H 263.8°. Best body text is #FFFFFF at 11.55:1 contrast (WCAG AA passes).

Color values

HEX	#133381
RGB	rgb(19, 51, 129)
HSL	hsl(223, 74%, 29%)
HSV	hsv(223, 85%, 51%)
CMYK	cmyk(85.3%, 60.5%, 0%, 49.4%)
CIE-LAB	lab(23.97, 20.10, -47.13)
CIE-LCH	lch(23.97, 51.24, 293.09°)
OKLab	oklab(35.19% -0.0148 -0.1363)
OKLCH	oklch(35.19% 0.137 263.8)
XYZ	xyz(5.4134, 4.0904, 21.2688)
Luminance	0.0409 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#133381 #816113

analogous

#136A81 #133381 #2A1381

triadic

#133381 #811333 #338113

tetradic

#133381 #81136A #816113 #13812A

square

#133381 #81136A #816113 #13812A

split-complementary

#133381 #812A13 #6A8113

monochromatic

#040B1B #0B1E4C #133381 #1B48B6 #2E62E0

Accessibility & contrast

On white

11.55

#133381 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#133381 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #133381

11.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##133381	#FFFFFF	#000000	##FFFFFF
##133381	1.00	11.55	1.82	11.55
#FFFFFF	11.55	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E84

Deuteranopia (green-blind)

#00347F

Tritanopia (blue-blind)

#004754

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #133381;
/* rgb */ color: rgb(19, 51, 129);
/* oklch */ color: oklch(35.2% 0.137 263.8);

Tailwind

colors: {
  custom: {
    50: '#666aa6',
    500: '#133381',
    950: '#000000',
  },
}

SCSS

$custom: #133381;
$custom-light: #666aa6;
$custom-dark: #000000;

JSON

{
  "hex": "#133381",
  "rgb": {
    "r": 19,
    "g": 51,
    "b": 129
  },
  "hsl": {
    "h": 222.545,
    "s": 74.324,
    "l": 29.02
  },
  "oklch": {
    "l": 0.35187,
    "c": 0.13708,
    "h": 263.8
  },
  "luminance": 0.04091
}

Semantic roles & 50–950 ramp

primary

#133381

secondary

#B6923A

accent

#BB37F1

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #133381

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

Preview Lab → · Contrast checker → · Palette generator →