#1D356B#1D356B

#1D356B is a dark, moderate blue. Relative luminance 0.039; OKLCH L 34.2% C 0.099 H 263.9°. Best body text is #FFFFFF at 11.84:1 contrast (WCAG AA passes).

Color values

HEX	#1D356B
RGB	rgb(29, 53, 107)
HSL	hsl(222, 57%, 27%)
HSV	hsv(222, 73%, 42%)
CMYK	cmyk(72.9%, 50.5%, 0%, 58%)
CIE-LAB	lab(23.23, 10.87, -34.30)
CIE-LCH	lch(23.23, 35.99, 287.59°)
OKLab	oklab(34.19% -0.0105 -0.0983)
OKLCH	oklch(34.19% 0.099 263.9)
XYZ	xyz(4.4327, 3.8685, 14.4202)
Luminance	0.0387 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D356B #6B531D

analogous

#1D5C6B #1D356B #2C1D6B

triadic

#1D356B #6B1D35 #356B1D

tetradic

#1D356B #6B1D5C #6B531D #1D6B2C

square

#1D356B #6B1D5C #6B531D #1D6B2C

split-complementary

#1D356B #6B2C1D #5C6B1D

monochromatic

#070C18 #101D3B #1D356B #2A4D9B #3965C9

Accessibility & contrast

On white

11.84

#1D356B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#1D356B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D356B

11.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D356B	#FFFFFF	#000000	##FFFFFF
##1D356B	1.00	11.84	1.77	11.84
#FFFFFF	11.84	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#183B6D

Deuteranopia (green-blind)

#05346A

Tritanopia (blue-blind)

#00424A

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1d356b;
/* rgb */ color: rgb(29, 53, 107);
/* oklch */ color: oklch(34.2% 0.099 263.9);

Tailwind

colors: {
  custom: {
    50: '#646b96',
    500: '#1d356b',
    950: '#000000',
  },
}

SCSS

$custom: #1d356b;
$custom-light: #646b96;
$custom-dark: #000000;

JSON

{
  "hex": "#1d356b",
  "rgb": {
    "r": 29,
    "g": 53,
    "b": 107
  },
  "hsl": {
    "h": 221.538,
    "s": 57.353,
    "l": 26.667
  },
  "oklch": {
    "l": 0.34194,
    "c": 0.09889,
    "h": 263.9
  },
  "luminance": 0.03869
}

Semantic roles & 50–950 ramp

primary

#1D356B

secondary

#A08344

accent

#B147E1

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060D

muted

#7A7A7E

Preview Lab

Preview with #1D356B

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

Preview Lab → · Contrast checker → · Palette generator →