#1D366C#1D366C

#1D366C is a dark, moderate blue. Relative luminance 0.040; OKLCH L 34.5% C 0.099 H 263.4°. Best body text is #FFFFFF at 11.69:1 contrast (WCAG AA passes).

Color values

HEX	#1D366C
RGB	rgb(29, 54, 108)
HSL	hsl(221, 58%, 27%)
HSV	hsv(221, 73%, 42%)
CMYK	cmyk(73.1%, 50%, 0%, 57.6%)
CIE-LAB	lab(23.61, 10.57, -34.34)
CIE-LCH	lch(23.61, 35.93, 287.11°)
OKLab	oklab(34.51% -0.0113 -0.0984)
OKLCH	oklch(34.51% 0.099 263.4)
XYZ	xyz(4.5317, 3.9818, 14.7142)
Luminance	0.0398 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D366C #6C531D

analogous

#1D5E6C #1D366C #2C1D6C

triadic

#1D366C #6C1D36 #366C1D

tetradic

#1D366C #6C1D5E #6C531D #1D6C2C

square

#1D366C #6C1D5E #6C531D #1D6C2C

split-complementary

#1D366C #6C2C1D #5E6C1D

monochromatic

#060C18 #101E3C #1D366C #2A4E9C #3967CA

Accessibility & contrast

On white

11.69

#1D366C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#1D366C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D366C

11.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D366C	#FFFFFF	#000000	##FFFFFF
##1D366C	1.00	11.69	1.80	11.69
#FFFFFF	11.69	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#193C6E

Deuteranopia (green-blind)

#07356B

Tritanopia (blue-blind)

#00434B

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1d366c;
/* rgb */ color: rgb(29, 54, 108);
/* oklch */ color: oklch(34.5% 0.099 263.4);

Tailwind

colors: {
  custom: {
    50: '#646c96',
    500: '#1d366c',
    950: '#000000',
  },
}

SCSS

$custom: #1d366c;
$custom-light: #646c96;
$custom-dark: #000000;

JSON

{
  "hex": "#1d366c",
  "rgb": {
    "r": 29,
    "g": 54,
    "b": 108
  },
  "hsl": {
    "h": 221.013,
    "s": 57.664,
    "l": 26.863
  },
  "oklch": {
    "l": 0.34507,
    "c": 0.09907,
    "h": 263.4
  },
  "luminance": 0.03982
}

Semantic roles & 50–950 ramp

primary

#1D366C

secondary

#A18344

accent

#B047E1

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060D

muted

#7A7A7E

Preview Lab

Preview with #1D366C

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

Preview Lab → · Contrast checker → · Palette generator →