#1D3F82#1D3F82

#1D3F82 is a dark, moderate blue. Relative luminance 0.054; OKLCH L 38.3% C 0.120 H 262.1°. Best body text is #FFFFFF at 10.07:1 contrast (WCAG AA passes).

Color values

HEX	#1D3F82
RGB	rgb(29, 63, 130)
HSL	hsl(220, 64%, 31%)
HSV	hsv(220, 78%, 51%)
CMYK	cmyk(77.7%, 51.5%, 0%, 49%)
CIE-LAB	lab(27.92, 13.17, -41.33)
CIE-LCH	lch(27.92, 43.38, 287.68°)
OKLab	oklab(38.31% -0.0164 -0.1188)
OKLCH	oklch(38.31% 0.12 262.1)
XYZ	xyz(6.3120, 5.4272, 21.8297)
Luminance	0.0543 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3F82 #82601D

analogous

#1D7182 #1D3F82 #2D1D82

triadic

#1D3F82 #821D3F #3F821D

tetradic

#1D3F82 #821D71 #82601D #1D822D

square

#1D3F82 #821D71 #82601D #1D822D

split-complementary

#1D3F82 #822D1D #71821D

monochromatic

#070F1E #122750 #1D3F82 #2857B4 #4475D5

Accessibility & contrast

On white

10.07

#1D3F82 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#1D3F82 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3F82

10.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3F82	#FFFFFF	#000000	##FFFFFF
##1D3F82	1.00	10.07	2.09	10.07
#FFFFFF	10.07	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#174784

Deuteranopia (green-blind)

#003E81

Tritanopia (blue-blind)

#004F5A

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1d3f82;
/* rgb */ color: rgb(29, 63, 130);
/* oklch */ color: oklch(38.3% 0.120 262.1);

Tailwind

colors: {
  custom: {
    50: '#6973a7',
    500: '#1d3f82',
    950: '#000000',
  },
}

SCSS

$custom: #1d3f82;
$custom-light: #6973a7;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3f82",
  "rgb": {
    "r": 29,
    "g": 63,
    "b": 130
  },
  "hsl": {
    "h": 219.802,
    "s": 63.522,
    "l": 31.176
  },
  "oklch": {
    "l": 0.38306,
    "c": 0.11996,
    "h": 262.1
  },
  "luminance": 0.05428
}

Semantic roles & 50–950 ramp

primary

#1D3F82

secondary

#B59046

accent

#AF41E7

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1D3F82

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

Preview Lab → · Contrast checker → · Palette generator →