#133A7B#133A7B

#133A7B is a dark, moderate blue. Relative luminance 0.046; OKLCH L 36.2% C 0.119 H 260.2°. Best body text is #FFFFFF at 10.94:1 contrast (WCAG AA passes).

Color values

HEX	#133A7B
RGB	rgb(19, 58, 123)
HSL	hsl(218, 73%, 28%)
HSV	hsv(218, 85%, 48%)
CMYK	cmyk(84.6%, 52.8%, 0%, 51.8%)
CIE-LAB	lab(25.55, 12.61, -40.79)
CIE-LCH	lch(25.55, 42.70, 287.18°)
OKLab	oklab(36.23% -0.0203 -0.1175)
OKLCH	oklch(36.23% 0.119 260.2)
XYZ	xyz(5.3555, 4.5940, 19.3395)
Luminance	0.0459 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#133A7B #7B5413

analogous

#136E7B #133A7B #20137B

triadic

#133A7B #7B133A #3A7B13

tetradic

#133A7B #7B136E #7B5413 #137B20

square

#133A7B #7B136E #7B5413 #137B20

split-complementary

#133A7B #7B2013 #6E7B13

monochromatic

#040C1B #0B2146 #133A7B #1B53B0 #2A6EDE

Accessibility & contrast

On white

10.94

#133A7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#133A7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #133A7B

10.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##133A7B	#FFFFFF	#000000	##FFFFFF
##133A7B	1.00	10.94	1.92	10.94
#FFFFFF	10.94	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F417D

Deuteranopia (green-blind)

#00387A

Tritanopia (blue-blind)

#004A54

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #133a7b;
/* rgb */ color: rgb(19, 58, 123);
/* oklch */ color: oklch(36.2% 0.119 260.2);

Tailwind

colors: {
  custom: {
    50: '#646fa2',
    500: '#133a7b',
    950: '#000000',
  },
}

SCSS

$custom: #133a7b;
$custom-light: #646fa2;
$custom-dark: #000000;

JSON

{
  "hex": "#133a7b",
  "rgb": {
    "r": 19,
    "g": 58,
    "b": 123
  },
  "hsl": {
    "h": 217.5,
    "s": 73.239,
    "l": 27.843
  },
  "oklch": {
    "l": 0.36229,
    "c": 0.11925,
    "h": 260.2
  },
  "luminance": 0.04595
}

Semantic roles & 50–950 ramp

primary

#133A7B

secondary

#B18439

accent

#AB38F0

background

#F6F6FA

surface

#EBECF3

border

#C6C7CD

text

#06070F

muted

#7A7A7F

Preview Lab

Preview with #133A7B

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

Preview Lab → · Contrast checker → · Palette generator →