#1D358F#1D358F

#1D358F is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.3% C 0.151 H 267.0°. Best body text is #FFFFFF at 10.72:1 contrast (WCAG AA passes).

Color values

HEX	#1D358F
RGB	rgb(29, 53, 143)
HSL	hsl(227, 66%, 34%)
HSV	hsv(227, 80%, 56%)
CMYK	cmyk(79.7%, 62.9%, 0%, 43.9%)
CIE-LAB	lab(26.13, 25.33, -52.32)
CIE-LCH	lch(26.13, 58.13, 295.84°)
OKLab	oklab(37.29% -0.008 -0.1513)
OKLCH	oklch(37.29% 0.151 267)
XYZ	xyz(6.7360, 4.7898, 26.5508)
Luminance	0.0479 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D358F #8F771D

analogous

#1D6E8F #1D358F #3E1D8F

triadic

#1D358F #8F1D35 #358F1D

tetradic

#1D358F #8F1D6E #8F771D #1D8F3E

square

#1D358F #8F1D6E #8F771D #1D8F3E

split-complementary

#1D358F #8F3E1D #6E8F1D

monochromatic

#080F29 #13225C #1D358F #2748C2 #4C6ADB

Accessibility & contrast

On white

10.72

#1D358F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#1D358F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D358F

10.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D358F	#FFFFFF	#000000	##FFFFFF
##1D358F	1.00	10.72	1.96	10.72
#FFFFFF	10.72	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004392

Deuteranopia (green-blind)

#00398D

Tritanopia (blue-blind)

#004C5C

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #1d358f;
/* rgb */ color: rgb(29, 53, 143);
/* oklch */ color: oklch(37.3% 0.151 267.0);

Tailwind

colors: {
  custom: {
    50: '#6d6cb1',
    500: '#1d358f',
    950: '#000000',
  },
}

SCSS

$custom: #1d358f;
$custom-light: #6d6cb1;
$custom-dark: #000000;

JSON

{
  "hex": "#1d358f",
  "rgb": {
    "r": 29,
    "g": 53,
    "b": 143
  },
  "hsl": {
    "h": 227.368,
    "s": 66.279,
    "l": 33.725
  },
  "oklch": {
    "l": 0.37285,
    "c": 0.15148,
    "h": 267
  },
  "luminance": 0.04791
}

Semantic roles & 50–950 ramp

primary

#1D358F

secondary

#BDA54B

accent

#C53FE9

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080611

muted

#7B7A80

Preview Lab

Preview with #1D358F

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

Preview Lab → · Contrast checker → · Palette generator →