#1D3CA7#1D3CA7

#1D3CA7 is a dark, vivid blue. Relative luminance 0.063; OKLCH L 40.9% C 0.175 H 266.0°. Best body text is #FFFFFF at 9.31:1 contrast (WCAG AA passes).

Color values

HEX	#1D3CA7
RGB	rgb(29, 60, 167)
HSL	hsl(227, 70%, 38%)
HSV	hsv(227, 83%, 65%)
CMYK	cmyk(82.6%, 64.1%, 0%, 34.5%)
CIE-LAB	lab(30.11, 29.94, -60.42)
CIE-LCH	lch(30.11, 67.43, 296.36°)
OKLab	oklab(40.9% -0.0123 -0.1749)
OKLCH	oklch(40.9% 0.175 266)
XYZ	xyz(9.0952, 6.2819, 37.2849)
Luminance	0.0628 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3CA7 #A7881D

analogous

#1D81A7 #1D3CA7 #431DA7

triadic

#1D3CA7 #A71D3C #3CA71D

tetradic

#1D3CA7 #A71D81 #A7881D #1DA743

square

#1D3CA7 #A71D81 #A7881D #1DA743

split-complementary

#1D3CA7 #A7431D #81A71D

monochromatic

#0B173F #142973 #1D3CA7 #2850DA #5C7AE3

Accessibility & contrast

On white

9.31

#1D3CA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#1D3CA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3CA7

9.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3CA7	#FFFFFF	#000000	##FFFFFF
##1D3CA7	1.00	9.31	2.26	9.31
#FFFFFF	9.31	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EAA

Deuteranopia (green-blind)

#0041A5

Tritanopia (blue-blind)

#00586C

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #1d3ca7;
/* rgb */ color: rgb(29, 60, 167);
/* oklch */ color: oklch(40.9% 0.175 266.0);

Tailwind

colors: {
  custom: {
    50: '#7371c2',
    500: '#1d3ca7',
    950: '#000000',
  },
}

SCSS

$custom: #1d3ca7;
$custom-light: #7371c2;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3ca7",
  "rgb": {
    "r": 29,
    "g": 60,
    "b": 167
  },
  "hsl": {
    "h": 226.522,
    "s": 70.408,
    "l": 38.431
  },
  "oklch": {
    "l": 0.40899,
    "c": 0.17535,
    "h": 266
  },
  "luminance": 0.06283
}

Semantic roles & 50–950 ramp

primary

#1D3CA7

secondary

#C7AE59

accent

#C53BED

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#090712

muted

#7B7A81

Preview Lab

Preview with #1D3CA7

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

Preview Lab → · Contrast checker → · Palette generator →