#1D3CA0#1D3CA0

#1D3CA0 is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.2% C 0.166 H 265.8°. Best body text is #FFFFFF at 9.52:1 contrast (WCAG AA passes).

Color values

HEX	#1D3CA0
RGB	rgb(29, 60, 160)
HSL	hsl(226, 69%, 37%)
HSV	hsv(226, 82%, 63%)
CMYK	cmyk(81.9%, 62.5%, 0%, 37.3%)
CIE-LAB	lab(29.49, 27.22, -57.22)
CIE-LCH	lch(29.49, 63.36, 295.44°)
OKLab	oklab(40.24% -0.0122 -0.1655)
OKLCH	oklch(40.24% 0.166 265.8)
XYZ	xyz(8.4655, 6.0300, 33.9686)
Luminance	0.0603 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3CA0 #A0811D

analogous

#1D7DA0 #1D3CA0 #401DA0

triadic

#1D3CA0 #A01D3C #3CA01D

tetradic

#1D3CA0 #A01D7D #A0811D #1DA040

square

#1D3CA0 #A01D7D #A0811D #1DA040

split-complementary

#1D3CA0 #A0401D #7DA01D

monochromatic

#0A1538 #14296C #1D3CA0 #264FD4 #5777E1

Accessibility & contrast

On white

9.52

#1D3CA0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#1D3CA0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3CA0

9.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3CA0	#FFFFFF	#000000	##FFFFFF
##1D3CA0	1.00	9.52	2.21	9.52
#FFFFFF	9.52	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CA3

Deuteranopia (green-blind)

#00409E

Tritanopia (blue-blind)

#005668

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #1d3ca0;
/* rgb */ color: rgb(29, 60, 160);
/* oklch */ color: oklch(40.2% 0.166 265.8);

Tailwind

colors: {
  custom: {
    50: '#7171bd',
    500: '#1d3ca0',
    950: '#000000',
  },
}

SCSS

$custom: #1d3ca0;
$custom-light: #7171bd;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3ca0",
  "rgb": {
    "r": 29,
    "g": 60,
    "b": 160
  },
  "hsl": {
    "h": 225.802,
    "s": 69.312,
    "l": 37.059
  },
  "oklch": {
    "l": 0.40244,
    "c": 0.166,
    "h": 265.8
  },
  "luminance": 0.06031
}

Semantic roles & 50–950 ramp

primary

#1D3CA0

secondary

#C4AA55

accent

#C23CEC

background

#F7F6FB

surface

#EDECF7

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #1D3CA0

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

Preview Lab → · Contrast checker → · Palette generator →