#133DA1#133DA1

#133DA1 is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.2% C 0.168 H 263.4°. Best body text is #FFFFFF at 9.50:1 contrast (WCAG AA passes).

Color values

HEX	#133DA1
RGB	rgb(19, 61, 161)
HSL	hsl(222, 79%, 35%)
HSV	hsv(222, 88%, 63%)
CMYK	cmyk(88.2%, 62.1%, 0%, 36.9%)
CIE-LAB	lab(29.53, 26.17, -57.76)
CIE-LCH	lch(29.53, 63.41, 294.37°)
OKLab	oklab(40.22% -0.0193 -0.1673)
OKLCH	oklch(40.22% 0.168 263.4)
XYZ	xyz(8.3680, 6.0481, 34.4377)
Luminance	0.0605 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#133DA1 #A17713

analogous

#1384A1 #133DA1 #3013A1

triadic

#133DA1 #A1133D #3DA113

tetradic

#133DA1 #A11384 #A17713 #13A130

square

#133DA1 #A11384 #A17713 #13A130

split-complementary

#133DA1 #A13013 #84A113

monochromatic

#061434 #0D286A #133DA1 #1952D8 #4576E9

Accessibility & contrast

On white

9.50

#133DA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#133DA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #133DA1

9.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##133DA1	#FFFFFF	#000000	##FFFFFF
##133DA1	1.00	9.50	2.21	9.50
#FFFFFF	9.50	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CA4

Deuteranopia (green-blind)

#003F9F

Tritanopia (blue-blind)

#005769

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #133da1;
/* rgb */ color: rgb(19, 61, 161);
/* oklch */ color: oklch(40.2% 0.168 263.4);

Tailwind

colors: {
  custom: {
    50: '#6f72be',
    500: '#133da1',
    950: '#000000',
  },
}

SCSS

$custom: #133da1;
$custom-light: #6f72be;
$custom-dark: #000000;

JSON

{
  "hex": "#133da1",
  "rgb": {
    "r": 19,
    "g": 61,
    "b": 161
  },
  "hsl": {
    "h": 222.254,
    "s": 78.889,
    "l": 35.294
  },
  "oklch": {
    "l": 0.40218,
    "c": 0.16838,
    "h": 263.4
  },
  "luminance": 0.06049
}

Semantic roles & 50–950 ramp

primary

#133DA1

secondary

#CAA346

accent

#BC32F5

background

#F7F6FB

surface

#EDECF7

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #133DA1

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

Preview Lab → · Contrast checker → · Palette generator →