#1D3369#1D3369

#1D3369 is a dark, moderate blue. Relative luminance 0.036; OKLCH L 33.6% C 0.099 H 264.9°. Best body text is #FFFFFF at 12.14:1 contrast (WCAG AA passes).

Color values

HEX	#1D3369
RGB	rgb(29, 51, 105)
HSL	hsl(223, 57%, 26%)
HSV	hsv(223, 72%, 41%)
CMYK	cmyk(72.4%, 51.4%, 0%, 58.8%)
CIE-LAB	lab(22.47, 11.49, -34.23)
CIE-LCH	lch(22.47, 36.11, 288.55°)
OKLab	oklab(33.57% -0.0088 -0.0982)
OKLCH	oklch(33.57% 0.099 264.9)
XYZ	xyz(4.2394, 3.6484, 13.8426)
Luminance	0.0365 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3369 #69531D

analogous

#1D5969 #1D3369 #2D1D69

triadic

#1D3369 #691D33 #33691D

tetradic

#1D3369 #691D59 #69531D #1D692D

square

#1D3369 #691D59 #69531D #1D692D

split-complementary

#1D3369 #692D1D #59691D

monochromatic

#070C18 #101C39 #1D3369 #2A4A99 #3862C8

Accessibility & contrast

On white

12.14

#1D3369 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#1D3369 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3369

12.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3369	#FFFFFF	#000000	##FFFFFF
##1D3369	1.00	12.14	1.73	12.14
#FFFFFF	12.14	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#16396B

Deuteranopia (green-blind)

#033268

Tritanopia (blue-blind)

#004049

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #1d3369;
/* rgb */ color: rgb(29, 51, 105);
/* oklch */ color: oklch(33.6% 0.099 264.9);

Tailwind

colors: {
  custom: {
    50: '#636a94',
    500: '#1d3369',
    950: '#000000',
  },
}

SCSS

$custom: #1d3369;
$custom-light: #636a94;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3369",
  "rgb": {
    "r": 29,
    "g": 51,
    "b": 105
  },
  "hsl": {
    "h": 222.632,
    "s": 56.716,
    "l": 26.275
  },
  "oklch": {
    "l": 0.33568,
    "c": 0.09855,
    "h": 264.9
  },
  "luminance": 0.03649
}

Semantic roles & 50–950 ramp

primary

#1D3369

secondary

#9E8444

accent

#B448E0

background

#F6F6F9

surface

#EBEBF1

border

#C6C6CB

text

#06060D

muted

#7A7A7E

Preview Lab

Preview with #1D3369

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

Preview Lab → · Contrast checker → · Palette generator →