#1D3DA7#1D3DA7

#1D3DA7 is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.1% C 0.174 H 265.8°. Best body text is #FFFFFF at 9.22:1 contrast (WCAG AA passes).

Color values

HEX	#1D3DA7
RGB	rgb(29, 61, 167)
HSL	hsl(226, 70%, 38%)
HSV	hsv(226, 83%, 65%)
CMYK	cmyk(82.6%, 63.5%, 0%, 34.5%)
CIE-LAB	lab(30.37, 29.27, -60.00)
CIE-LCH	lch(30.37, 66.75, 296.00°)
OKLab	oklab(41.09% -0.0128 -0.1737)
OKLCH	oklch(41.09% 0.174 265.8)
XYZ	xyz(9.1480, 6.3876, 37.3025)
Luminance	0.0639 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3DA7 #A7871D

analogous

#1D82A7 #1D3DA7 #421DA7

triadic

#1D3DA7 #A71D3D #3DA71D

tetradic

#1D3DA7 #A71D82 #A7871D #1DA742

square

#1D3DA7 #A71D82 #A7871D #1DA742

split-complementary

#1D3DA7 #A7421D #82A71D

monochromatic

#0B173F #142A73 #1D3DA7 #2851DA #5C7BE3

Accessibility & contrast

On white

9.22

#1D3DA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#1D3DA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3DA7

9.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3DA7	#FFFFFF	#000000	##FFFFFF
##1D3DA7	1.00	9.22	2.28	9.22
#FFFFFF	9.22	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EAA

Deuteranopia (green-blind)

#0041A5

Tritanopia (blue-blind)

#00596C

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #1d3da7;
/* rgb */ color: rgb(29, 61, 167);
/* oklch */ color: oklch(41.1% 0.174 265.8);

Tailwind

colors: {
  custom: {
    50: '#7272c2',
    500: '#1d3da7',
    950: '#000000',
  },
}

SCSS

$custom: #1d3da7;
$custom-light: #7272c2;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3da7",
  "rgb": {
    "r": 29,
    "g": 61,
    "b": 167
  },
  "hsl": {
    "h": 226.087,
    "s": 70.408,
    "l": 38.431
  },
  "oklch": {
    "l": 0.4109,
    "c": 0.17414,
    "h": 265.8
  },
  "luminance": 0.06389
}

Semantic roles & 50–950 ramp

primary

#1D3DA7

secondary

#C7AD59

accent

#C43BED

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#090712

muted

#7B7A81

Preview Lab

Preview with #1D3DA7

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

Preview Lab → · Contrast checker → · Palette generator →