#1D3585#1D3585

#1D3585 is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.4% C 0.137 H 266.6°. Best body text is #FFFFFF at 11.05:1 contrast (WCAG AA passes).

Color values

HEX	#1D3585
RGB	rgb(29, 53, 133)
HSL	hsl(226, 64%, 32%)
HSV	hsv(226, 78%, 52%)
CMYK	cmyk(78.2%, 60.2%, 0%, 47.8%)
CIE-LAB	lab(25.26, 21.37, -47.52)
CIE-LCH	lch(25.26, 52.10, 294.22°)
OKLab	oklab(36.37% -0.0081 -0.1372)
OKLCH	oklch(36.37% 0.137 266.6)
XYZ	xyz(6.0120, 4.5002, 22.7375)
Luminance	0.0450 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3585 #856D1D

analogous

#1D6985 #1D3585 #391D85

triadic

#1D3585 #851D35 #35851D

tetradic

#1D3585 #851D69 #856D1D #1D8539

square

#1D3585 #851D69 #856D1D #1D8539

split-complementary

#1D3585 #85391D #69851D

monochromatic

#070D21 #122153 #1D3585 #2849B7 #4667D7

Accessibility & contrast

On white

11.05

#1D3585 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#1D3585 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3585

11.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3585	#FFFFFF	#000000	##FFFFFF
##1D3585	1.00	11.05	1.90	11.05
#FFFFFF	11.05	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004188

Deuteranopia (green-blind)

#003783

Tritanopia (blue-blind)

#004957

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #1d3585;
/* rgb */ color: rgb(29, 53, 133);
/* oklch */ color: oklch(36.4% 0.137 266.6);

Tailwind

colors: {
  custom: {
    50: '#6a6ba9',
    500: '#1d3585',
    950: '#000000',
  },
}

SCSS

$custom: #1d3585;
$custom-light: #6a6ba9;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3585",
  "rgb": {
    "r": 29,
    "g": 53,
    "b": 133
  },
  "hsl": {
    "h": 226.154,
    "s": 64.198,
    "l": 31.765
  },
  "oklch": {
    "l": 0.3637,
    "c": 0.13743,
    "h": 266.6
  },
  "luminance": 0.04501
}

Semantic roles & 50–950 ramp

primary

#1D3585

secondary

#B89E46

accent

#C141E7

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070610

muted

#7A7A7F

Preview Lab

Preview with #1D3585

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

Preview Lab → · Contrast checker → · Palette generator →