#1D3A9D#1D3A9D

#1D3A9D is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.6% C 0.164 H 266.1°. Best body text is #FFFFFF at 9.79:1 contrast (WCAG AA passes).

Color values

HEX	#1D3A9D
RGB	rgb(29, 58, 157)
HSL	hsl(226, 69%, 36%)
HSV	hsv(226, 82%, 62%)
CMYK	cmyk(81.5%, 63.1%, 0%, 38.4%)
CIE-LAB	lab(28.70, 27.40, -56.69)
CIE-LCH	lch(28.70, 62.97, 295.80°)
OKLab	oklab(39.57% -0.0111 -0.164)
OKLCH	oklch(39.57% 0.164 266.1)
XYZ	xyz(8.1034, 5.7207, 32.5689)
Luminance	0.0572 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3A9D #9D801D

analogous

#1D7A9D #1D3A9D #401D9D

triadic

#1D3A9D #9D1D3A #3A9D1D

tetradic

#1D3A9D #9D1D7A #9D801D #1D9D40

square

#1D3A9D #9D1D7A #9D801D #1D9D40

split-complementary

#1D3A9D #9D401D #7A9D1D

monochromatic

#0A1436 #132769 #1D3A9D #274DD1 #5574E0

Accessibility & contrast

On white

9.79

#1D3A9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#1D3A9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3A9D

9.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3A9D	#FFFFFF	#000000	##FFFFFF
##1D3A9D	1.00	9.79	2.14	9.79
#FFFFFF	9.79	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AA0

Deuteranopia (green-blind)

#003E9B

Tritanopia (blue-blind)

#005466

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1d3a9d;
/* rgb */ color: rgb(29, 58, 157);
/* oklch */ color: oklch(39.6% 0.164 266.1);

Tailwind

colors: {
  custom: {
    50: '#706fbb',
    500: '#1d3a9d',
    950: '#000000',
  },
}

SCSS

$custom: #1d3a9d;
$custom-light: #706fbb;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3a9d",
  "rgb": {
    "r": 29,
    "g": 58,
    "b": 157
  },
  "hsl": {
    "h": 226.406,
    "s": 68.817,
    "l": 36.471
  },
  "oklch": {
    "l": 0.39575,
    "c": 0.1644,
    "h": 266.1
  },
  "luminance": 0.05722
}

Semantic roles & 50–950 ramp

primary

#1D3A9D

secondary

#C3A953

accent

#C43CEC

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #1D3A9D

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

Preview Lab → · Contrast checker → · Palette generator →