#133B7D#133B7D

#133B7D is a dark, vivid blue. Relative luminance 0.047; OKLCH L 36.6% C 0.121 H 260.1°. Best body text is #FFFFFF at 10.77:1 contrast (WCAG AA passes).

Color values

HEX	#133B7D
RGB	rgb(19, 59, 125)
HSL	hsl(217, 74%, 28%)
HSV	hsv(217, 85%, 49%)
CMYK	cmyk(84.8%, 52.8%, 0%, 51%)
CIE-LAB	lab(26.00, 12.75, -41.32)
CIE-LCH	lch(26.00, 43.24, 287.14°)
OKLab	oklab(36.62% -0.0208 -0.119)
OKLCH	oklch(36.62% 0.121 260.1)
XYZ	xyz(5.5328, 4.7464, 20.0226)
Luminance	0.0475 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#133B7D #7D5513

analogous

#13707D #133B7D #20137D

triadic

#133B7D #7D133B #3B7D13

tetradic

#133B7D #7D1370 #7D5513 #137D20

square

#133B7D #7D1370 #7D5513 #137D20

split-complementary

#133B7D #7D2013 #707D13

monochromatic

#040D1B #0B2248 #133B7D #1B54B2 #2C6FDF

Accessibility & contrast

On white

10.77

#133B7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#133B7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #133B7D

10.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##133B7D	#FFFFFF	#000000	##FFFFFF
##133B7D	1.00	10.77	1.95	10.77
#FFFFFF	10.77	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#10437F

Deuteranopia (green-blind)

#00397C

Tritanopia (blue-blind)

#004B56

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #133b7d;
/* rgb */ color: rgb(19, 59, 125);
/* oklch */ color: oklch(36.6% 0.121 260.1);

Tailwind

colors: {
  custom: {
    50: '#6570a3',
    500: '#133b7d',
    950: '#000000',
  },
}

SCSS

$custom: #133b7d;
$custom-light: #6570a3;
$custom-dark: #000000;

JSON

{
  "hex": "#133b7d",
  "rgb": {
    "r": 19,
    "g": 59,
    "b": 125
  },
  "hsl": {
    "h": 217.358,
    "s": 73.611,
    "l": 28.235
  },
  "oklch": {
    "l": 0.36624,
    "c": 0.12083,
    "h": 260.1
  },
  "luminance": 0.04747
}

Semantic roles & 50–950 ramp

primary

#133B7D

secondary

#B38539

accent

#AB38F0

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#06070F

muted

#7A7A7F

Preview Lab

Preview with #133B7D

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

Preview Lab → · Contrast checker → · Palette generator →