#1D4A8F#1D4A8F

#1D4A8F is a dark, vivid blue. Relative luminance 0.071; OKLCH L 41.8% C 0.125 H 259.0°. Best body text is #FFFFFF at 8.65:1 contrast (WCAG AA passes).

Color values

HEX	#1D4A8F
RGB	rgb(29, 74, 143)
HSL	hsl(216, 66%, 34%)
HSV	hsv(216, 80%, 56%)
CMYK	cmyk(79.7%, 48.3%, 0%, 43.9%)
CIE-LAB	lab(32.13, 10.87, -42.59)
CIE-LCH	lch(32.13, 43.95, 284.32°)
OKLab	oklab(41.83% -0.0238 -0.1223)
OKLCH	oklch(41.83% 0.125 259)
XYZ	xyz(7.9116, 7.1410, 26.9427)
Luminance	0.0714 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4A8F #8F621D

analogous

#1D838F #1D4A8F #291D8F

triadic

#1D4A8F #8F1D4A #4A8F1D

tetradic

#1D4A8F #8F1D83 #8F621D #1D8F29

square

#1D4A8F #8F1D83 #8F621D #1D8F29

split-complementary

#1D4A8F #8F291D #838F1D

monochromatic

#081529 #13305C #1D4A8F #2764C2 #4C84DB

Accessibility & contrast

On white

8.65

#1D4A8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#1D4A8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4A8F

8.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4A8F	#FFFFFF	#000000	##FFFFFF
##1D4A8F	1.00	8.65	2.43	8.65
#FFFFFF	8.65	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#245192

Deuteranopia (green-blind)

#03478E

Tritanopia (blue-blind)

#005A65

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #1d4a8f;
/* rgb */ color: rgb(29, 74, 143);
/* oklch */ color: oklch(41.8% 0.125 259.0);

Tailwind

colors: {
  custom: {
    50: '#6b7bb0',
    500: '#1d4a8f',
    950: '#000000',
  },
}

SCSS

$custom: #1d4a8f;
$custom-light: #6b7bb0;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4a8f",
  "rgb": {
    "r": 29,
    "g": 74,
    "b": 143
  },
  "hsl": {
    "h": 216.316,
    "s": 66.279,
    "l": 33.725
  },
  "oklch": {
    "l": 0.41825,
    "c": 0.12459,
    "h": 259
  },
  "luminance": 0.07142
}

Semantic roles & 50–950 ramp

primary

#1D4A8F

secondary

#BD904B

accent

#A63FE9

background

#F6F7FA

surface

#ECEDF5

border

#C7C8CF

text

#080910

muted

#7A7B7F

Preview Lab

Preview with #1D4A8F

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

Preview Lab → · Contrast checker → · Palette generator →