#1D366F#1D366F

#1D366F is a dark, moderate blue. Relative luminance 0.040; OKLCH L 34.7% C 0.104 H 264.0°. Best body text is #FFFFFF at 11.61:1 contrast (WCAG AA passes).

Color values

HEX	#1D366F
RGB	rgb(29, 54, 111)
HSL	hsl(222, 59%, 27%)
HSV	hsv(222, 74%, 44%)
CMYK	cmyk(73.9%, 51.4%, 0%, 56.5%)
CIE-LAB	lab(23.83, 11.78, -35.92)
CIE-LCH	lch(23.83, 37.80, 288.16°)
OKLab	oklab(34.74% -0.0109 -0.1031)
OKLCH	oklch(34.74% 0.104 264)
XYZ	xyz(4.6941, 4.0468, 15.5696)
Luminance	0.0405 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D366F #6F561D

analogous

#1D5F6F #1D366F #2D1D6F

triadic

#1D366F #6F1D36 #366F1D

tetradic

#1D366F #6F1D5F #6F561D #1D6F2D

square

#1D366F #6F1D5F #6F561D #1D6F2D

split-complementary

#1D366F #6F2D1D #5F6F1D

monochromatic

#060C18 #101E3E #1D366F #2A4EA0 #3B67CC

Accessibility & contrast

On white

11.61

#1D366F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#1D366F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D366F

11.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D366F	#FFFFFF	#000000	##FFFFFF
##1D366F	1.00	11.61	1.81	11.61
#FFFFFF	11.61	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#163D71

Deuteranopia (green-blind)

#00356E

Tritanopia (blue-blind)

#00434D

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1d366f;
/* rgb */ color: rgb(29, 54, 111);
/* oklch */ color: oklch(34.7% 0.104 264.0);

Tailwind

colors: {
  custom: {
    50: '#656c99',
    500: '#1d366f',
    950: '#000000',
  },
}

SCSS

$custom: #1d366f;
$custom-light: #656c99;
$custom-dark: #000000;

JSON

{
  "hex": "#1d366f",
  "rgb": {
    "r": 29,
    "g": 54,
    "b": 111
  },
  "hsl": {
    "h": 221.707,
    "s": 58.571,
    "l": 27.451
  },
  "oklch": {
    "l": 0.3474,
    "c": 0.10364,
    "h": 264
  },
  "luminance": 0.04047
}

Semantic roles & 50–950 ramp

primary

#1D366F

secondary

#A38644

accent

#B246E2

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #1D366F

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

Preview Lab → · Contrast checker → · Palette generator →