#1D358C#1D358C

#1D358C is a dark, vivid blue. Relative luminance 0.047; OKLCH L 37.0% C 0.147 H 266.9°. Best body text is #FFFFFF at 10.82:1 contrast (WCAG AA passes).

Color values

HEX	#1D358C
RGB	rgb(29, 53, 140)
HSL	hsl(227, 66%, 33%)
HSV	hsv(227, 79%, 55%)
CMYK	cmyk(79.3%, 62.1%, 0%, 45.1%)
CIE-LAB	lab(25.86, 24.15, -50.89)
CIE-LCH	lch(25.86, 56.33, 295.39°)
OKLab	oklab(37.01% -0.008 -0.1471)
OKLCH	oklch(37.01% 0.147 266.9)
XYZ	xyz(6.5118, 4.7001, 25.3699)
Luminance	0.0470 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D358C #8C741D

analogous

#1D6C8C #1D358C #3C1D8C

triadic

#1D358C #8C1D35 #358C1D

tetradic

#1D358C #8C1D6C #8C741D #1D8C3C

square

#1D358C #8C1D6C #8C741D #1D8C3C

split-complementary

#1D358C #8C3C1D #6C8C1D

monochromatic

#080F27 #122259 #1D358C #2848BF #4A69D9

Accessibility & contrast

On white

10.82

#1D358C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#1D358C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D358C

10.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D358C	#FFFFFF	#000000	##FFFFFF
##1D358C	1.00	10.82	1.94	10.82
#FFFFFF	10.82	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00438F

Deuteranopia (green-blind)

#00388A

Tritanopia (blue-blind)

#004B5B

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #1d358c;
/* rgb */ color: rgb(29, 53, 140);
/* oklch */ color: oklch(37.0% 0.147 266.9);

Tailwind

colors: {
  custom: {
    50: '#6c6bae',
    500: '#1d358c',
    950: '#000000',
  },
}

SCSS

$custom: #1d358c;
$custom-light: #6c6bae;
$custom-dark: #000000;

JSON

{
  "hex": "#1d358c",
  "rgb": {
    "r": 29,
    "g": 53,
    "b": 140
  },
  "hsl": {
    "h": 227.027,
    "s": 65.68,
    "l": 33.137
  },
  "oklch": {
    "l": 0.37007,
    "c": 0.14732,
    "h": 266.9
  },
  "luminance": 0.04701
}

Semantic roles & 50–950 ramp

primary

#1D358C

secondary

#BCA349

accent

#C43FE9

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #1D358C

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

Preview Lab → · Contrast checker → · Palette generator →