#1D4DA8#1D4DA8

#1D4DA8 is a dark, vivid blue. Relative luminance 0.084; OKLCH L 44.4% C 0.156 H 261.6°. Best body text is #FFFFFF at 7.84:1 contrast (WCAG AA passes).

Color values

HEX	#1D4DA8
RGB	rgb(29, 77, 168)
HSL	hsl(219, 71%, 39%)
HSV	hsv(219, 83%, 66%)
CMYK	cmyk(82.7%, 54.2%, 0%, 34.1%)
CIE-LAB	lab(34.79, 18.88, -53.39)
CIE-LCH	lch(34.79, 56.62, 289.47°)
OKLab	oklab(44.43% -0.0227 -0.154)
OKLCH	oklch(44.43% 0.156 261.6)
XYZ	xyz(10.2259, 8.3949, 38.1196)
Luminance	0.0840 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4DA8 #A8781D

analogous

#1D92A8 #1D4DA8 #331DA8

triadic

#1D4DA8 #A81D4D #4DA81D

tetradic

#1D4DA8 #A81D92 #A8781D #1DA833

square

#1D4DA8 #A81D92 #A8781D #1DA833

split-complementary

#1D4DA8 #A8331D #92A81D

monochromatic

#0B1D40 #143574 #1D4DA8 #2866DA #5C8BE3

Accessibility & contrast

On white

7.84

#1D4DA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.68

#1D4DA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4DA8

7.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4DA8	#FFFFFF	#000000	##FFFFFF
##1D4DA8	1.00	7.84	2.68	7.84
#FFFFFF	7.84	1.00	21.00	1.00
#000000	2.68	21.00	1.00	21.00
##FFFFFF	7.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058AB

Deuteranopia (green-blind)

#004CA6

Tritanopia (blue-blind)

#006373

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #1d4da8;
/* rgb */ color: rgb(29, 77, 168);
/* oklch */ color: oklch(44.4% 0.156 261.6);

Tailwind

colors: {
  custom: {
    50: '#727ec3',
    500: '#1d4da8',
    950: '#000000',
  },
}

SCSS

$custom: #1d4da8;
$custom-light: #727ec3;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4da8",
  "rgb": {
    "r": 29,
    "g": 77,
    "b": 168
  },
  "hsl": {
    "h": 219.281,
    "s": 70.558,
    "l": 38.627
  },
  "oklch": {
    "l": 0.44434,
    "c": 0.15568,
    "h": 261.6
  },
  "luminance": 0.08396
}

Semantic roles & 50–950 ramp

primary

#1D4DA8

secondary

#C7A15A

accent

#B03AED

background

#F7F7FC

surface

#EDEEF8

border

#C8C9D1

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1D4DA8

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

Preview Lab → · Contrast checker → · Palette generator →