#133D8E#133D8E

#133D8E is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.5% C 0.142 H 261.8°. Best body text is #FFFFFF at 10.07:1 contrast (WCAG AA passes).

Color values

HEX	#133D8E
RGB	rgb(19, 61, 142)
HSL	hsl(220, 76%, 32%)
HSV	hsv(220, 87%, 56%)
CMYK	cmyk(86.6%, 57%, 0%, 44.3%)
CIE-LAB	lab(27.92, 18.44, -48.79)
CIE-LCH	lch(27.92, 52.16, 290.70°)
OKLab	oklab(38.51% -0.0203 -0.1409)
OKLCH	oklch(38.51% 0.142 261.8)
XYZ	xyz(6.8180, 5.4281, 26.2743)
Luminance	0.0543 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#133D8E #8E6413

analogous

#137B8E #133D8E #26138E

triadic

#133D8E #8E133D #3D8E13

tetradic

#133D8E #8E137B #8E6413 #138E26

square

#133D8E #8E137B #8E6413 #138E26

split-complementary

#133D8E #8E2613 #7B8E13

monochromatic

#050F22 #0C2658 #133D8E #1A54C4 #3772E4

Accessibility & contrast

On white

10.07

#133D8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#133D8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #133D8E

10.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##133D8E	#FFFFFF	#000000	##FFFFFF
##133D8E	1.00	10.07	2.09	10.07
#FFFFFF	10.07	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004891

Deuteranopia (green-blind)

#003D8C

Tritanopia (blue-blind)

#00515F

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #133d8e;
/* rgb */ color: rgb(19, 61, 142);
/* oklch */ color: oklch(38.5% 0.142 261.8);

Tailwind

colors: {
  custom: {
    50: '#6971b0',
    500: '#133d8e',
    950: '#000000',
  },
}

SCSS

$custom: #133d8e;
$custom-light: #6971b0;
$custom-dark: #000000;

JSON

{
  "hex": "#133d8e",
  "rgb": {
    "r": 19,
    "g": 61,
    "b": 142
  },
  "hsl": {
    "h": 219.512,
    "s": 76.398,
    "l": 31.569
  },
  "oklch": {
    "l": 0.38506,
    "c": 0.14241,
    "h": 261.8
  },
  "luminance": 0.05429
}

Semantic roles & 50–950 ramp

primary

#133D8E

secondary

#C2943B

accent

#B235F3

background

#F6F6FA

surface

#ECECF5

border

#C7C7CF

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #133D8E

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

Preview Lab → · Contrast checker → · Palette generator →