#133D80#133D80

#133D80 is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.3% C 0.123 H 259.7°. Best body text is #FFFFFF at 10.46:1 contrast (WCAG AA passes).

Color values

HEX	#133D80
RGB	rgb(19, 61, 128)
HSL	hsl(217, 74%, 29%)
HSV	hsv(217, 85%, 50%)
CMYK	cmyk(85.2%, 52.3%, 0%, 49.8%)
CIE-LAB	lab(26.83, 12.60, -41.86)
CIE-LCH	lch(26.83, 43.71, 286.75°)
OKLab	oklab(37.33% -0.022 -0.1206)
OKLCH	oklch(37.33% 0.123 259.7)
XYZ	xyz(5.8322, 5.0337, 21.0821)
Luminance	0.0503 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#133D80 #805613

analogous

#137480 #133D80 #201380

triadic

#133D80 #80133D #3D8013

tetradic

#133D80 #801374 #805613 #138020

square

#133D80 #801374 #805613 #138020

split-complementary

#133D80 #802013 #748013

monochromatic

#040D1B #0B244B #133D80 #1B56B5 #2D72E0

Accessibility & contrast

On white

10.46

#133D80 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#133D80 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #133D80

10.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##133D80	#FFFFFF	#000000	##FFFFFF
##133D80	1.00	10.46	2.01	10.46
#FFFFFF	10.46	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#124582

Deuteranopia (green-blind)

#003B7F

Tritanopia (blue-blind)

#004D58

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #133d80;
/* rgb */ color: rgb(19, 61, 128);
/* oklch */ color: oklch(37.3% 0.123 259.7);

Tailwind

colors: {
  custom: {
    50: '#6571a5',
    500: '#133d80',
    950: '#000000',
  },
}

SCSS

$custom: #133d80;
$custom-light: #6571a5;
$custom-dark: #000000;

JSON

{
  "hex": "#133d80",
  "rgb": {
    "r": 19,
    "g": 61,
    "b": 128
  },
  "hsl": {
    "h": 216.881,
    "s": 74.15,
    "l": 28.824
  },
  "oklch": {
    "l": 0.37331,
    "c": 0.12254,
    "h": 259.7
  },
  "luminance": 0.05034
}

Semantic roles & 50–950 ramp

primary

#133D80

secondary

#B58639

accent

#A937F1

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #133D80

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

Preview Lab → · Contrast checker → · Palette generator →