#133B80#133B80

#133B80 is a dark, vivid blue. Relative luminance 0.048; OKLCH L 36.9% C 0.125 H 260.6°. Best body text is #FFFFFF at 10.69:1 contrast (WCAG AA passes).

Color values

HEX	#133B80
RGB	rgb(19, 59, 128)
HSL	hsl(218, 74%, 29%)
HSV	hsv(218, 85%, 50%)
CMYK	cmyk(85.2%, 53.9%, 0%, 49.8%)
CIE-LAB	lab(26.23, 14.01, -42.83)
CIE-LCH	lch(26.23, 45.07, 288.11°)
OKLab	oklab(36.87% -0.0204 -0.1235)
OKLCH	oklch(36.87% 0.125 260.6)
XYZ	xyz(5.7274, 4.8242, 21.0472)
Luminance	0.0483 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#133B80 #805813

analogous

#137280 #133B80 #221380

triadic

#133B80 #80133B #3B8013

tetradic

#133B80 #801372 #805813 #138022

square

#133B80 #801372 #805813 #138022

split-complementary

#133B80 #802213 #728013

monochromatic

#040C1B #0B224B #133B80 #1B54B5 #2D6FE0

Accessibility & contrast

On white

10.69

#133B80 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#133B80 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #133B80

10.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##133B80	#FFFFFF	#000000	##FFFFFF
##133B80	1.00	10.69	1.97	10.69
#FFFFFF	10.69	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#094382

Deuteranopia (green-blind)

#00397F

Tritanopia (blue-blind)

#004C57

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #133b80;
/* rgb */ color: rgb(19, 59, 128);
/* oklch */ color: oklch(36.9% 0.125 260.6);

Tailwind

colors: {
  custom: {
    50: '#6570a5',
    500: '#133b80',
    950: '#000000',
  },
}

SCSS

$custom: #133b80;
$custom-light: #6570a5;
$custom-dark: #000000;

JSON

{
  "hex": "#133b80",
  "rgb": {
    "r": 19,
    "g": 59,
    "b": 128
  },
  "hsl": {
    "h": 217.982,
    "s": 74.15,
    "l": 28.824
  },
  "oklch": {
    "l": 0.36871,
    "c": 0.12516,
    "h": 260.6
  },
  "luminance": 0.04825
}

Semantic roles & 50–950 ramp

primary

#133B80

secondary

#B58839

accent

#AD37F1

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #133B80

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

Preview Lab → · Contrast checker → · Palette generator →