#133C81#133C81

#133C81 is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.2% C 0.125 H 260.3°. Best body text is #FFFFFF at 10.55:1 contrast (WCAG AA passes).

Color values

HEX	#133C81
RGB	rgb(19, 60, 129)
HSL	hsl(218, 74%, 29%)
HSV	hsv(218, 85%, 51%)
CMYK	cmyk(85.3%, 53.5%, 0%, 49.4%)
CIE-LAB	lab(26.60, 13.72, -42.85)
CIE-LCH	lch(26.60, 44.99, 287.76°)
OKLab	oklab(37.18% -0.0211 -0.1235)
OKLCH	oklch(37.18% 0.125 260.3)
XYZ	xyz(5.8454, 4.9544, 21.4128)
Luminance	0.0495 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#133C81 #815813

analogous

#137381 #133C81 #211381

triadic

#133C81 #81133C #3C8113

tetradic

#133C81 #811373 #815813 #138121

square

#133C81 #811373 #815813 #138121

split-complementary

#133C81 #812113 #738113

monochromatic

#040C1B #0B234C #133C81 #1B55B6 #2E71E0

Accessibility & contrast

On white

10.55

#133C81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#133C81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #133C81

10.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##133C81	#FFFFFF	#000000	##FFFFFF
##133C81	1.00	10.55	1.99	10.55
#FFFFFF	10.55	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C4483

Deuteranopia (green-blind)

#003A80

Tritanopia (blue-blind)

#004D58

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #133c81;
/* rgb */ color: rgb(19, 60, 129);
/* oklch */ color: oklch(37.2% 0.125 260.3);

Tailwind

colors: {
  custom: {
    50: '#6671a6',
    500: '#133c81',
    950: '#000000',
  },
}

SCSS

$custom: #133c81;
$custom-light: #6671a6;
$custom-dark: #000000;

JSON

{
  "hex": "#133c81",
  "rgb": {
    "r": 19,
    "g": 60,
    "b": 129
  },
  "hsl": {
    "h": 217.636,
    "s": 74.324,
    "l": 29.02
  },
  "oklch": {
    "l": 0.37183,
    "c": 0.12528,
    "h": 260.3
  },
  "luminance": 0.04955
}

Semantic roles & 50–950 ramp

primary

#133C81

secondary

#B6883A

accent

#AC37F1

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #133C81

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

Preview Lab → · Contrast checker → · Palette generator →