#1D336B#1D336B

#1D336B is a dark, moderate blue. Relative luminance 0.037; OKLCH L 33.7% C 0.102 H 265.2°. Best body text is #FFFFFF at 12.08:1 contrast (WCAG AA passes).

Color values

HEX	#1D336B
RGB	rgb(29, 51, 107)
HSL	hsl(223, 57%, 27%)
HSV	hsv(223, 73%, 42%)
CMYK	cmyk(72.9%, 52.3%, 0%, 58%)
CIE-LAB	lab(22.62, 12.30, -35.29)
CIE-LCH	lch(22.62, 37.37, 289.21°)
OKLab	oklab(33.73% -0.0085 -0.1013)
OKLCH	oklch(33.73% 0.102 265.2)
XYZ	xyz(4.3434, 3.6900, 14.3904)
Luminance	0.0369 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D336B #6B551D

analogous

#1D5A6B #1D336B #2E1D6B

triadic

#1D336B #6B1D33 #336B1D

tetradic

#1D336B #6B1D5A #6B551D #1D6B2E

square

#1D336B #6B1D5A #6B551D #1D6B2E

split-complementary

#1D336B #6B2E1D #5A6B1D

monochromatic

#070B18 #101C3B #1D336B #2A4A9B #3962C9

Accessibility & contrast

On white

12.08

#1D336B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.74

#1D336B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D336B

12.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D336B	#FFFFFF	#000000	##FFFFFF
##1D336B	1.00	12.08	1.74	12.08
#FFFFFF	12.08	1.00	21.00	1.00
#000000	1.74	21.00	1.00	21.00
##FFFFFF	12.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#133A6D

Deuteranopia (green-blind)

#00336A

Tritanopia (blue-blind)

#00404A

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #1d336b;
/* rgb */ color: rgb(29, 51, 107);
/* oklch */ color: oklch(33.7% 0.102 265.2);

Tailwind

colors: {
  custom: {
    50: '#646a96',
    500: '#1d336b',
    950: '#000000',
  },
}

SCSS

$custom: #1d336b;
$custom-light: #646a96;
$custom-dark: #000000;

JSON

{
  "hex": "#1d336b",
  "rgb": {
    "r": 29,
    "g": 51,
    "b": 107
  },
  "hsl": {
    "h": 223.077,
    "s": 57.353,
    "l": 26.667
  },
  "oklch": {
    "l": 0.33726,
    "c": 0.10162,
    "h": 265.2
  },
  "luminance": 0.0369
}

Semantic roles & 50–950 ramp

primary

#1D336B

secondary

#A08644

accent

#B547E1

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060D

muted

#7A7A7E

Preview Lab

Preview with #1D336B

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

Preview Lab → · Contrast checker → · Palette generator →