#1D4BAD#1D4BAD

#1D4BAD is a dark, vivid blue. Relative luminance 0.083; OKLCH L 44.4% C 0.165 H 262.7°. Best body text is #FFFFFF at 7.89:1 contrast (WCAG AA passes).

Color values

HEX	#1D4BAD
RGB	rgb(29, 75, 173)
HSL	hsl(221, 71%, 40%)
HSV	hsv(221, 83%, 68%)
CMYK	cmyk(83.2%, 56.6%, 0%, 32.2%)
CIE-LAB	lab(34.62, 22.21, -56.65)
CIE-LCH	lch(34.62, 60.85, 291.41°)
OKLab	oklab(44.42% -0.0209 -0.1636)
OKLCH	oklch(44.42% 0.165 262.7)
XYZ	xyz(10.5629, 8.3092, 40.5742)
Luminance	0.0831 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4BAD #AD7F1D

analogous

#1D93AD #1D4BAD #371DAD

triadic

#1D4BAD #AD1D4B #4BAD1D

tetradic

#1D4BAD #AD1D93 #AD7F1D #1DAD37

square

#1D4BAD #AD1D93 #AD7F1D #1DAD37

split-complementary

#1D4BAD #AD371D #93AD1D

monochromatic

#0B1E44 #143479 #1D4BAD #2C64DC #608AE4

Accessibility & contrast

On white

7.89

#1D4BAD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#1D4BAD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4BAD

7.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4BAD	#FFFFFF	#000000	##FFFFFF
##1D4BAD	1.00	7.89	2.66	7.89
#FFFFFF	7.89	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058B0

Deuteranopia (green-blind)

#004BAB

Tritanopia (blue-blind)

#006474

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #1d4bad;
/* rgb */ color: rgb(29, 75, 173);
/* oklch */ color: oklch(44.4% 0.165 262.7);

Tailwind

colors: {
  custom: {
    50: '#737cc6',
    500: '#1d4bad',
    950: '#000000',
  },
}

SCSS

$custom: #1d4bad;
$custom-light: #737cc6;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4bad",
  "rgb": {
    "r": 29,
    "g": 75,
    "b": 173
  },
  "hsl": {
    "h": 220.833,
    "s": 71.287,
    "l": 39.608
  },
  "oklch": {
    "l": 0.44423,
    "c": 0.16497,
    "h": 262.7
  },
  "luminance": 0.0831
}

Semantic roles & 50–950 ramp

primary

#1D4BAD

secondary

#C9A65D

accent

#B43AEE

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0913

muted

#7C7B82

Preview Lab

Preview with #1D4BAD

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

Preview Lab → · Contrast checker → · Palette generator →