#1D358D#1D358D

#1D358D is a dark, vivid blue. Relative luminance 0.047; OKLCH L 37.1% C 0.149 H 266.9°. Best body text is #FFFFFF at 10.79:1 contrast (WCAG AA passes).

Color values

HEX	#1D358D
RGB	rgb(29, 53, 141)
HSL	hsl(227, 66%, 33%)
HSV	hsv(227, 79%, 55%)
CMYK	cmyk(79.4%, 62.4%, 0%, 44.7%)
CIE-LAB	lab(25.95, 24.54, -51.37)
CIE-LCH	lch(25.95, 56.93, 295.54°)
OKLab	oklab(37.1% -0.008 -0.1485)
OKLCH	oklch(37.1% 0.149 266.9)
XYZ	xyz(6.5858, 4.7298, 25.7600)
Luminance	0.0473 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D358D #8D751D

analogous

#1D6D8D #1D358D #3D1D8D

triadic

#1D358D #8D1D35 #358D1D

tetradic

#1D358D #8D1D6D #8D751D #1D8D3D

square

#1D358D #8D1D6D #8D751D #1D8D3D

split-complementary

#1D358D #8D3D1D #6D8D1D

monochromatic

#080F27 #13225A #1D358D #2748C0 #4B69DA

Accessibility & contrast

On white

10.79

#1D358D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#1D358D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D358D

10.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D358D	#FFFFFF	#000000	##FFFFFF
##1D358D	1.00	10.79	1.95	10.79
#FFFFFF	10.79	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004390

Deuteranopia (green-blind)

#00388B

Tritanopia (blue-blind)

#004C5B

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #1d358d;
/* rgb */ color: rgb(29, 53, 141);
/* oklch */ color: oklch(37.1% 0.149 266.9);

Tailwind

colors: {
  custom: {
    50: '#6c6caf',
    500: '#1d358d',
    950: '#000000',
  },
}

SCSS

$custom: #1d358d;
$custom-light: #6c6caf;
$custom-dark: #000000;

JSON

{
  "hex": "#1d358d",
  "rgb": {
    "r": 29,
    "g": 53,
    "b": 141
  },
  "hsl": {
    "h": 227.143,
    "s": 65.882,
    "l": 33.333
  },
  "oklch": {
    "l": 0.37099,
    "c": 0.1487,
    "h": 266.9
  },
  "luminance": 0.04731
}

Semantic roles & 50–950 ramp

primary

#1D358D

secondary

#BCA44A

accent

#C43FE9

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #1D358D

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

Preview Lab → · Contrast checker → · Palette generator →