#1D3B9D#1D3B9D

#1D3B9D is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.8% C 0.163 H 265.9°. Best body text is #FFFFFF at 9.70:1 contrast (WCAG AA passes).

Color values

HEX	#1D3B9D
RGB	rgb(29, 59, 157)
HSL	hsl(226, 69%, 36%)
HSV	hsv(226, 82%, 62%)
CMYK	cmyk(81.5%, 62.4%, 0%, 38.4%)
CIE-LAB	lab(28.96, 26.73, -56.26)
CIE-LCH	lch(28.96, 62.29, 295.41°)
OKLab	oklab(39.77% -0.0117 -0.1628)
OKLCH	oklch(39.77% 0.163 265.9)
XYZ	xyz(8.1543, 5.8225, 32.5858)
Luminance	0.0582 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3B9D #9D7F1D

analogous

#1D7B9D #1D3B9D #3F1D9D

triadic

#1D3B9D #9D1D3B #3B9D1D

tetradic

#1D3B9D #9D1D7B #9D7F1D #1D9D3F

square

#1D3B9D #9D1D7B #9D7F1D #1D9D3F

split-complementary

#1D3B9D #9D3F1D #7B9D1D

monochromatic

#0A1436 #132869 #1D3B9D #274ED1 #5575E0

Accessibility & contrast

On white

9.70

#1D3B9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#1D3B9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3B9D

9.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3B9D	#FFFFFF	#000000	##FFFFFF
##1D3B9D	1.00	9.70	2.16	9.70
#FFFFFF	9.70	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.70	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: #1d3b9d;
/* rgb */ color: rgb(29, 59, 157);
/* oklch */ color: oklch(39.8% 0.163 265.9);

Tailwind

colors: {
  custom: {
    50: '#7070bb',
    500: '#1d3b9d',
    950: '#000000',
  },
}

SCSS

$custom: #1d3b9d;
$custom-light: #7070bb;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3b9d",
  "rgb": {
    "r": 29,
    "g": 59,
    "b": 157
  },
  "hsl": {
    "h": 225.938,
    "s": 68.817,
    "l": 36.471
  },
  "oklch": {
    "l": 0.39771,
    "c": 0.16318,
    "h": 265.9
  },
  "luminance": 0.05823
}

Semantic roles & 50–950 ramp

primary

#1D3B9D

secondary

#C3A953

accent

#C33CEC

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #1D3B9D

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

Preview Lab → · Contrast checker → · Palette generator →