#1D3D73#1D3D73

#1D3D73 is a dark, moderate blue. Relative luminance 0.048; OKLCH L 36.7% C 0.100 H 260.2°. Best body text is #FFFFFF at 10.67:1 contrast (WCAG AA passes).

Color values

HEX	#1D3D73
RGB	rgb(29, 61, 115)
HSL	hsl(218, 60%, 28%)
HSV	hsv(218, 75%, 45%)
CMYK	cmyk(74.8%, 47%, 0%, 54.9%)
CIE-LAB	lab(26.26, 8.48, -34.56)
CIE-LCH	lch(26.26, 35.58, 283.79°)
OKLab	oklab(36.7% -0.0171 -0.0989)
OKLCH	oklch(36.7% 0.1 260.2)
XYZ	xyz(5.2688, 4.8359, 16.8721)
Luminance	0.0484 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3D73 #73531D

analogous

#1D6873 #1D3D73 #281D73

triadic

#1D3D73 #731D3D #3D731D

tetradic

#1D3D73 #731D68 #73531D #1D7328

square

#1D3D73 #731D68 #73531D #1D7328

split-complementary

#1D3D73 #73281D #68731D

monochromatic

#060D18 #112342 #1D3D73 #2957A4 #3C73CE

Accessibility & contrast

On white

10.67

#1D3D73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#1D3D73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3D73

10.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3D73	#FFFFFF	#000000	##FFFFFF
##1D3D73	1.00	10.67	1.97	10.67
#FFFFFF	10.67	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#224275

Deuteranopia (green-blind)

#113A72

Tritanopia (blue-blind)

#004A52

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #1d3d73;
/* rgb */ color: rgb(29, 61, 115);
/* oklch */ color: oklch(36.7% 0.100 260.2);

Tailwind

colors: {
  custom: {
    50: '#65729c',
    500: '#1d3d73',
    950: '#000000',
  },
}

SCSS

$custom: #1d3d73;
$custom-light: #65729c;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3d73",
  "rgb": {
    "r": 29,
    "g": 61,
    "b": 115
  },
  "hsl": {
    "h": 217.674,
    "s": 59.722,
    "l": 28.235
  },
  "oklch": {
    "l": 0.36699,
    "c": 0.10039,
    "h": 260.2
  },
  "luminance": 0.04837
}

Semantic roles & 50–950 ramp

primary

#1D3D73

secondary

#A78345

accent

#A845E3

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #1D3D73

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

Preview Lab → · Contrast checker → · Palette generator →