#1D3584#1D3584

#1D3584 is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.3% C 0.136 H 266.6°. Best body text is #FFFFFF at 11.08:1 contrast (WCAG AA passes).

Color values

HEX	#1D3584
RGB	rgb(29, 53, 132)
HSL	hsl(226, 64%, 32%)
HSV	hsv(226, 78%, 52%)
CMYK	cmyk(78%, 59.8%, 0%, 48.2%)
CIE-LAB	lab(25.18, 20.97, -47.03)
CIE-LCH	lch(25.18, 51.49, 294.03°)
OKLab	oklab(36.28% -0.0081 -0.1358)
OKLCH	oklch(36.28% 0.136 266.6)
XYZ	xyz(5.9432, 4.4727, 22.3754)
Luminance	0.0447 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3584 #846C1D

analogous

#1D6984 #1D3584 #391D84

triadic

#1D3584 #841D35 #35841D

tetradic

#1D3584 #841D69 #846C1D #1D8439

square

#1D3584 #841D69 #846C1D #1D8439

split-complementary

#1D3584 #84391D #69841D

monochromatic

#070D20 #122152 #1D3584 #2849B6 #4567D6

Accessibility & contrast

On white

11.08

#1D3584 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#1D3584 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3584

11.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3584	#FFFFFF	#000000	##FFFFFF
##1D3584	1.00	11.08	1.89	11.08
#FFFFFF	11.08	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004187

Deuteranopia (green-blind)

#003782

Tritanopia (blue-blind)

#004957

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #1d3584;
/* rgb */ color: rgb(29, 53, 132);
/* oklch */ color: oklch(36.3% 0.136 266.6);

Tailwind

colors: {
  custom: {
    50: '#6a6ba8',
    500: '#1d3584',
    950: '#000000',
  },
}

SCSS

$custom: #1d3584;
$custom-light: #6a6ba8;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3584",
  "rgb": {
    "r": 29,
    "g": 53,
    "b": 132
  },
  "hsl": {
    "h": 226.019,
    "s": 63.975,
    "l": 31.569
  },
  "oklch": {
    "l": 0.36281,
    "c": 0.136,
    "h": 266.6
  },
  "luminance": 0.04473
}

Semantic roles & 50–950 ramp

primary

#1D3584

secondary

#B79D46

accent

#C041E7

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070610

muted

#7A7A7F

Preview Lab

Preview with #1D3584

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

Preview Lab → · Contrast checker → · Palette generator →