#1D3D72#1D3D72

#1D3D72 is a dark, moderate blue. Relative luminance 0.048; OKLCH L 36.6% C 0.099 H 259.9°. Best body text is #FFFFFF at 10.70:1 contrast (WCAG AA passes).

Color values

HEX	#1D3D72
RGB	rgb(29, 61, 114)
HSL	hsl(217, 59%, 28%)
HSV	hsv(217, 75%, 45%)
CMYK	cmyk(74.6%, 46.5%, 0%, 55.3%)
CIE-LAB	lab(26.20, 8.08, -34.03)
CIE-LCH	lch(26.20, 34.98, 283.35°)
OKLab	oklab(36.63% -0.0173 -0.0974)
OKLCH	oklch(36.63% 0.099 259.9)
XYZ	xyz(5.2116, 4.8130, 16.5707)
Luminance	0.0481 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3D72 #72521D

analogous

#1D6772 #1D3D72 #271D72

triadic

#1D3D72 #721D3D #3D721D

tetradic

#1D3D72 #721D67 #72521D #1D7227

square

#1D3D72 #721D67 #72521D #1D7227

split-complementary

#1D3D72 #72271D #67721D

monochromatic

#060D18 #112341 #1D3D72 #2957A3 #3C73CD

Accessibility & contrast

On white

10.70

#1D3D72 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#1D3D72 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3D72

10.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3D72	#FFFFFF	#000000	##FFFFFF
##1D3D72	1.00	10.70	1.96	10.70
#FFFFFF	10.70	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#234274

Deuteranopia (green-blind)

#133A71

Tritanopia (blue-blind)

#004952

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #1d3d72;
/* rgb */ color: rgb(29, 61, 114);
/* oklch */ color: oklch(36.6% 0.099 259.9);

Tailwind

colors: {
  custom: {
    50: '#65729b',
    500: '#1d3d72',
    950: '#000000',
  },
}

SCSS

$custom: #1d3d72;
$custom-light: #65729b;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3d72",
  "rgb": {
    "r": 29,
    "g": 61,
    "b": 114
  },
  "hsl": {
    "h": 217.412,
    "s": 59.441,
    "l": 28.039
  },
  "oklch": {
    "l": 0.36626,
    "c": 0.0989,
    "h": 259.9
  },
  "luminance": 0.04814
}

Semantic roles & 50–950 ramp

primary

#1D3D72

secondary

#A68145

accent

#A745E3

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #1D3D72

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

Preview Lab → · Contrast checker → · Palette generator →