#1D366E#1D366E

#1D366E is a dark, moderate blue. Relative luminance 0.040; OKLCH L 34.7% C 0.102 H 263.8°. Best body text is #FFFFFF at 11.63:1 contrast (WCAG AA passes).

Color values

HEX	#1D366E
RGB	rgb(29, 54, 110)
HSL	hsl(221, 58%, 27%)
HSV	hsv(221, 74%, 43%)
CMYK	cmyk(73.6%, 50.9%, 0%, 56.9%)
CIE-LAB	lab(23.75, 11.38, -35.39)
CIE-LCH	lch(23.75, 37.18, 287.82°)
OKLab	oklab(34.66% -0.011 -0.1015)
OKLCH	oklch(34.66% 0.102 263.8)
XYZ	xyz(4.6393, 4.0249, 15.2812)
Luminance	0.0403 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D366E #6E551D

analogous

#1D5F6E #1D366E #2C1D6E

triadic

#1D366E #6E1D36 #366E1D

tetradic

#1D366E #6E1D5F #6E551D #1D6E2C

square

#1D366E #6E1D5F #6E551D #1D6E2C

split-complementary

#1D366E #6E2C1D #5F6E1D

monochromatic

#060C18 #101E3E #1D366E #2A4E9E #3A67CB

Accessibility & contrast

On white

11.63

#1D366E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#1D366E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D366E

11.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D366E	#FFFFFF	#000000	##FFFFFF
##1D366E	1.00	11.63	1.81	11.63
#FFFFFF	11.63	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#173C70

Deuteranopia (green-blind)

#02356D

Tritanopia (blue-blind)

#00434C

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1d366e;
/* rgb */ color: rgb(29, 54, 110);
/* oklch */ color: oklch(34.7% 0.102 263.8);

Tailwind

colors: {
  custom: {
    50: '#646c98',
    500: '#1d366e',
    950: '#000000',
  },
}

SCSS

$custom: #1d366e;
$custom-light: #646c98;
$custom-dark: #000000;

JSON

{
  "hex": "#1d366e",
  "rgb": {
    "r": 29,
    "g": 54,
    "b": 110
  },
  "hsl": {
    "h": 221.481,
    "s": 58.273,
    "l": 27.255
  },
  "oklch": {
    "l": 0.34662,
    "c": 0.10212,
    "h": 263.8
  },
  "luminance": 0.04025
}

Semantic roles & 50–950 ramp

primary

#1D366E

secondary

#A28544

accent

#B246E1

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #1D366E

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

Preview Lab → · Contrast checker → · Palette generator →