#1D4FAD#1D4FAD

#1D4FAD is a mid, vivid blue. Relative luminance 0.089; OKLCH L 45.3% C 0.160 H 261.5°. Best body text is #FFFFFF at 7.57:1 contrast (WCAG AA passes).

Color values

HEX	#1D4FAD
RGB	rgb(29, 79, 173)
HSL	hsl(219, 71%, 40%)
HSV	hsv(219, 83%, 68%)
CMYK	cmyk(83.2%, 54.3%, 0%, 32.2%)
CIE-LAB	lab(35.73, 19.52, -54.84)
CIE-LCH	lch(35.73, 58.21, 289.59°)
OKLab	oklab(45.27% -0.0236 -0.1582)
OKLCH	oklch(45.27% 0.16 261.5)
XYZ	xyz(10.8428, 8.8690, 40.6675)
Luminance	0.0887 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4FAD #AD7B1D

analogous

#1D97AD #1D4FAD #331DAD

triadic

#1D4FAD #AD1D4F #4FAD1D

tetradic

#1D4FAD #AD1D97 #AD7B1D #1DAD33

square

#1D4FAD #AD1D97 #AD7B1D #1DAD33

split-complementary

#1D4FAD #AD331D #97AD1D

monochromatic

#0B1F44 #143779 #1D4FAD #2C69DC #608EE4

Accessibility & contrast

On white

7.57

#1D4FAD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.77

#1D4FAD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4FAD

7.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4FAD	#FFFFFF	#000000	##FFFFFF
##1D4FAD	1.00	7.57	2.77	7.57
#FFFFFF	7.57	1.00	21.00	1.00
#000000	2.77	21.00	1.00	21.00
##FFFFFF	7.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BB0

Deuteranopia (green-blind)

#004EAB

Tritanopia (blue-blind)

#006676

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #1d4fad;
/* rgb */ color: rgb(29, 79, 173);
/* oklch */ color: oklch(45.3% 0.160 261.5);

Tailwind

colors: {
  custom: {
    50: '#737fc6',
    500: '#1d4fad',
    950: '#000000',
  },
}

SCSS

$custom: #1d4fad;
$custom-light: #737fc6;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4fad",
  "rgb": {
    "r": 29,
    "g": 79,
    "b": 173
  },
  "hsl": {
    "h": 219.167,
    "s": 71.287,
    "l": 39.608
  },
  "oklch": {
    "l": 0.45265,
    "c": 0.16,
    "h": 261.5
  },
  "luminance": 0.0887
}

Semantic roles & 50–950 ramp

primary

#1D4FAD

secondary

#C9A35D

accent

#AF3AEE

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#090A13

muted

#7B7C82

Preview Lab

Preview with #1D4FAD

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

Preview Lab → · Contrast checker → · Palette generator →