#133FA1#133FA1

#133FA1 is a dark, vivid blue. Relative luminance 0.063; OKLCH L 40.6% C 0.166 H 263.0°. Best body text is #FFFFFF at 9.32:1 contrast (WCAG AA passes).

Color values

HEX	#133FA1
RGB	rgb(19, 63, 161)
HSL	hsl(221, 79%, 35%)
HSV	hsv(221, 88%, 63%)
CMYK	cmyk(88.2%, 60.9%, 0%, 36.9%)
CIE-LAB	lab(30.07, 24.80, -56.88)
CIE-LCH	lch(30.07, 62.05, 293.56°)
OKLab	oklab(40.62% -0.0203 -0.1646)
OKLCH	oklch(40.62% 0.166 263)
XYZ	xyz(8.4768, 6.2656, 34.4739)
Luminance	0.0627 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#133FA1 #A17513

analogous

#1386A1 #133FA1 #2E13A1

triadic

#133FA1 #A1133F #3FA113

tetradic

#133FA1 #A11386 #A17513 #13A12E

square

#133FA1 #A11386 #A17513 #13A12E

split-complementary

#133FA1 #A12E13 #86A113

monochromatic

#061434 #0D2A6A #133FA1 #1954D8 #4578E9

Accessibility & contrast

On white

9.32

#133FA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#133FA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #133FA1

9.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##133FA1	#FFFFFF	#000000	##FFFFFF
##133FA1	1.00	9.32	2.25	9.32
#FFFFFF	9.32	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA4

Deuteranopia (green-blind)

#00419F

Tritanopia (blue-blind)

#00586A

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #133fa1;
/* rgb */ color: rgb(19, 63, 161);
/* oklch */ color: oklch(40.6% 0.166 263.0);

Tailwind

colors: {
  custom: {
    50: '#6e73be',
    500: '#133fa1',
    950: '#000000',
  },
}

SCSS

$custom: #133fa1;
$custom-light: #6e73be;
$custom-dark: #000000;

JSON

{
  "hex": "#133fa1",
  "rgb": {
    "r": 19,
    "g": 63,
    "b": 161
  },
  "hsl": {
    "h": 221.408,
    "s": 78.889,
    "l": 35.294
  },
  "oklch": {
    "l": 0.40621,
    "c": 0.1659,
    "h": 263
  },
  "luminance": 0.06267
}

Semantic roles & 50–950 ramp

primary

#133FA1

secondary

#CAA146

accent

#B932F5

background

#F7F6FB

surface

#EDECF7

border

#C8C7D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #133FA1

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

Preview Lab → · Contrast checker → · Palette generator →