#1D336C#1D336C

#1D336C is a dark, moderate blue. Relative luminance 0.037; OKLCH L 33.8% C 0.103 H 265.4°. Best body text is #FFFFFF at 12.05:1 contrast (WCAG AA passes).

Color values

HEX	#1D336C
RGB	rgb(29, 51, 108)
HSL	hsl(223, 58%, 27%)
HSV	hsv(223, 73%, 42%)
CMYK	cmyk(73.1%, 52.8%, 0%, 57.6%)
CIE-LAB	lab(22.69, 12.70, -35.82)
CIE-LCH	lch(22.69, 38.00, 289.53°)
OKLab	oklab(33.81% -0.0083 -0.1028)
OKLCH	oklch(33.81% 0.103 265.4)
XYZ	xyz(4.3963, 3.7111, 14.6691)
Luminance	0.0371 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D336C #6C561D

analogous

#1D5B6C #1D336C #2F1D6C

triadic

#1D336C #6C1D33 #336C1D

tetradic

#1D336C #6C1D5B #6C561D #1D6C2F

square

#1D336C #6C1D5B #6C561D #1D6C2F

split-complementary

#1D336C #6C2F1D #5B6C1D

monochromatic

#060B18 #101C3C #1D336C #2A4A9C #3962CA

Accessibility & contrast

On white

12.05

#1D336C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.74

#1D336C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D336C

12.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D336C	#FFFFFF	#000000	##FFFFFF
##1D336C	1.00	12.05	1.74	12.05
#FFFFFF	12.05	1.00	21.00	1.00
#000000	1.74	21.00	1.00	21.00
##FFFFFF	12.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#123A6E

Deuteranopia (green-blind)

#00336B

Tritanopia (blue-blind)

#00404A

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #1d336c;
/* rgb */ color: rgb(29, 51, 108);
/* oklch */ color: oklch(33.8% 0.103 265.4);

Tailwind

colors: {
  custom: {
    50: '#646a96',
    500: '#1d336c',
    950: '#000000',
  },
}

SCSS

$custom: #1d336c;
$custom-light: #646a96;
$custom-dark: #000000;

JSON

{
  "hex": "#1d336c",
  "rgb": {
    "r": 29,
    "g": 51,
    "b": 108
  },
  "hsl": {
    "h": 223.291,
    "s": 57.664,
    "l": 26.863
  },
  "oklch": {
    "l": 0.33806,
    "c": 0.10316,
    "h": 265.4
  },
  "luminance": 0.03712
}

Semantic roles & 50–950 ramp

primary

#1D336C

secondary

#A18744

accent

#B647E1

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060D

muted

#7A7A7E

Preview Lab

Preview with #1D336C

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

Preview Lab → · Contrast checker → · Palette generator →