#1C3D73#1C3D73

#1C3D73 is a dark, moderate blue. Relative luminance 0.048; OKLCH L 36.7% C 0.101 H 259.8°. Best body text is #FFFFFF at 10.69:1 contrast (WCAG AA passes).

Color values

HEX	#1C3D73
RGB	rgb(28, 61, 115)
HSL	hsl(217, 61%, 28%)
HSV	hsv(217, 76%, 45%)
CMYK	cmyk(75.7%, 47%, 0%, 54.9%)
CIE-LAB	lab(26.22, 8.33, -34.63)
CIE-LCH	lch(26.22, 35.61, 283.52°)
OKLab	oklab(36.66% -0.0179 -0.0991)
OKLCH	oklch(36.66% 0.101 259.8)
XYZ	xyz(5.2410, 4.8216, 16.8708)
Luminance	0.0482 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3D73 #73521C

analogous

#1C6873 #1C3D73 #261C73

triadic

#1C3D73 #731C3D #3D731C

tetradic

#1C3D73 #731C68 #73521C #1C7326

square

#1C3D73 #731C68 #73521C #1C7326

split-complementary

#1C3D73 #73261C #68731C

monochromatic

#060D19 #102342 #1C3D73 #2857A4 #3A73CF

Accessibility & contrast

On white

10.69

#1C3D73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#1C3D73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3D73

10.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3D73	#FFFFFF	#000000	##FFFFFF
##1C3D73	1.00	10.69	1.96	10.69
#FFFFFF	10.69	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#224275

Deuteranopia (green-blind)

#103A72

Tritanopia (blue-blind)

#004A52

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #1c3d73;
/* rgb */ color: rgb(28, 61, 115);
/* oklch */ color: oklch(36.7% 0.101 259.8);

Tailwind

colors: {
  custom: {
    50: '#65729c',
    500: '#1c3d73',
    950: '#000000',
  },
}

SCSS

$custom: #1c3d73;
$custom-light: #65729c;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3d73",
  "rgb": {
    "r": 28,
    "g": 61,
    "b": 115
  },
  "hsl": {
    "h": 217.241,
    "s": 60.839,
    "l": 28.039
  },
  "oklch": {
    "l": 0.36655,
    "c": 0.10075,
    "h": 259.8
  },
  "luminance": 0.04822
}

Semantic roles & 50–950 ramp

primary

#1C3D73

secondary

#A78143

accent

#A744E4

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #1C3D73

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

Preview Lab → · Contrast checker → · Palette generator →