#1D3474#1D3474

#1D3474 is a dark, moderate blue. Relative luminance 0.040; OKLCH L 34.7% C 0.114 H 265.8°. Best body text is #FFFFFF at 11.70:1 contrast (WCAG AA passes).

Color values

HEX	#1D3474
RGB	rgb(29, 52, 116)
HSL	hsl(224, 60%, 28%)
HSV	hsv(224, 75%, 45%)
CMYK	cmyk(75%, 55.2%, 0%, 54.5%)
CIE-LAB	lab(23.60, 15.23, -39.49)
CIE-LCH	lch(23.60, 42.32, 291.10°)
OKLab	oklab(34.69% -0.0084 -0.1136)
OKLCH	oklch(34.69% 0.114 265.8)
XYZ	xyz(4.8860, 3.9776, 17.0299)
Luminance	0.0398 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3474 #745D1D

analogous

#1D5F74 #1D3474 #311D74

triadic

#1D3474 #741D34 #34741D

tetradic

#1D3474 #741D5F #745D1D #1D7431

square

#1D3474 #741D5F #745D1D #1D7431

split-complementary

#1D3474 #74311D #5F741D

monochromatic

#060B18 #111E43 #1D3474 #294AA5 #3D63CE

Accessibility & contrast

On white

11.70

#1D3474 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#1D3474 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3474

11.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3474	#FFFFFF	#000000	##FFFFFF
##1D3474	1.00	11.70	1.80	11.70
#FFFFFF	11.70	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#073C76

Deuteranopia (green-blind)

#003473

Tritanopia (blue-blind)

#00434E

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1d3474;
/* rgb */ color: rgb(29, 52, 116);
/* oklch */ color: oklch(34.7% 0.114 265.8);

Tailwind

colors: {
  custom: {
    50: '#666b9c',
    500: '#1d3474',
    950: '#000000',
  },
}

SCSS

$custom: #1d3474;
$custom-light: #666b9c;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3474",
  "rgb": {
    "r": 29,
    "g": 52,
    "b": 116
  },
  "hsl": {
    "h": 224.138,
    "s": 60,
    "l": 28.431
  },
  "oklch": {
    "l": 0.34685,
    "c": 0.11391,
    "h": 265.8
  },
  "luminance": 0.03978
}

Semantic roles & 50–950 ramp

primary

#1D3474

secondary

#A88E45

accent

#B945E3

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #1D3474

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

Preview Lab → · Contrast checker → · Palette generator →