#1D3575#1D3575

#1D3575 is a dark, moderate blue. Relative luminance 0.041; OKLCH L 35.0% C 0.114 H 265.4°. Best body text is #FFFFFF at 11.55:1 contrast (WCAG AA passes).

Color values

HEX	#1D3575
RGB	rgb(29, 53, 117)
HSL	hsl(224, 60%, 29%)
HSV	hsv(224, 75%, 46%)
CMYK	cmyk(75.2%, 54.7%, 0%, 54.1%)
CIE-LAB	lab(23.97, 14.93, -39.52)
CIE-LCH	lch(23.97, 42.25, 290.70°)
OKLab	oklab(34.99% -0.0092 -0.1137)
OKLCH	oklch(34.99% 0.114 265.4)
XYZ	xyz(4.9896, 4.0912, 17.3529)
Luminance	0.0409 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3575 #755D1D

analogous

#1D6175 #1D3575 #311D75

triadic

#1D3575 #751D35 #35751D

tetradic

#1D3575 #751D61 #755D1D #1D7531

square

#1D3575 #751D61 #755D1D #1D7531

split-complementary

#1D3575 #75311D #61751D

monochromatic

#060B19 #111F44 #1D3575 #294BA6 #3D65CF

Accessibility & contrast

On white

11.55

#1D3575 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#1D3575 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3575

11.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3575	#FFFFFF	#000000	##FFFFFF
##1D3575	1.00	11.55	1.82	11.55
#FFFFFF	11.55	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A3D77

Deuteranopia (green-blind)

#003574

Tritanopia (blue-blind)

#00444F

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1d3575;
/* rgb */ color: rgb(29, 53, 117);
/* oklch */ color: oklch(35.0% 0.114 265.4);

Tailwind

colors: {
  custom: {
    50: '#666b9d',
    500: '#1d3575',
    950: '#000000',
  },
}

SCSS

$custom: #1d3575;
$custom-light: #666b9d;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3575",
  "rgb": {
    "r": 29,
    "g": 53,
    "b": 117
  },
  "hsl": {
    "h": 223.636,
    "s": 60.274,
    "l": 28.627
  },
  "oklch": {
    "l": 0.34993,
    "c": 0.11405,
    "h": 265.4
  },
  "luminance": 0.04092
}

Semantic roles & 50–950 ramp

primary

#1D3575

secondary

#A98E45

accent

#B844E3

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #1D3575

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

Preview Lab → · Contrast checker → · Palette generator →