#1D3DA1#1D3DA1

#1D3DA1 is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.5% C 0.166 H 265.6°. Best body text is #FFFFFF at 9.40:1 contrast (WCAG AA passes).

Color values

HEX	#1D3DA1
RGB	rgb(29, 61, 161)
HSL	hsl(225, 69%, 37%)
HSV	hsv(225, 82%, 63%)
CMYK	cmyk(82%, 62.1%, 0%, 36.9%)
CIE-LAB	lab(29.84, 26.94, -57.25)
CIE-LCH	lch(29.84, 63.27, 295.20°)
OKLab	oklab(40.53% -0.0128 -0.1656)
OKLCH	oklch(40.53% 0.166 265.6)
XYZ	xyz(8.6062, 6.1709, 34.4488)
Luminance	0.0617 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3DA1 #A1811D

analogous

#1D7FA1 #1D3DA1 #3F1DA1

triadic

#1D3DA1 #A11D3D #3DA11D

tetradic

#1D3DA1 #A11D7F #A1811D #1DA13F

square

#1D3DA1 #A11D7F #A1811D #1DA13F

split-complementary

#1D3DA1 #A13F1D #7FA11D

monochromatic

#0A1639 #14296D #1D3DA1 #2651D5 #5879E1

Accessibility & contrast

On white

9.40

#1D3DA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#1D3DA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3DA1

9.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3DA1	#FFFFFF	#000000	##FFFFFF
##1D3DA1	1.00	9.40	2.23	9.40
#FFFFFF	9.40	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA4

Deuteranopia (green-blind)

#00409F

Tritanopia (blue-blind)

#005769

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1d3da1;
/* rgb */ color: rgb(29, 61, 161);
/* oklch */ color: oklch(40.5% 0.166 265.6);

Tailwind

colors: {
  custom: {
    50: '#7172be',
    500: '#1d3da1',
    950: '#000000',
  },
}

SCSS

$custom: #1d3da1;
$custom-light: #7172be;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3da1",
  "rgb": {
    "r": 29,
    "g": 61,
    "b": 161
  },
  "hsl": {
    "h": 225.455,
    "s": 69.474,
    "l": 37.255
  },
  "oklch": {
    "l": 0.40533,
    "c": 0.16612,
    "h": 265.6
  },
  "luminance": 0.06172
}

Semantic roles & 50–950 ramp

primary

#1D3DA1

secondary

#C4A955

accent

#C13CEC

background

#F7F6FB

surface

#EDECF7

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #1D3DA1

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

Preview Lab → · Contrast checker → · Palette generator →