#1D4EAD#1D4EAD

#1D4EAD is a mid, vivid blue. Relative luminance 0.087; OKLCH L 45.1% C 0.161 H 261.8°. Best body text is #FFFFFF at 7.65:1 contrast (WCAG AA passes).

Color values

HEX	#1D4EAD
RGB	rgb(29, 78, 173)
HSL	hsl(220, 71%, 40%)
HSV	hsv(220, 83%, 68%)
CMYK	cmyk(83.2%, 54.9%, 0%, 32.2%)
CIE-LAB	lab(35.45, 20.19, -55.30)
CIE-LCH	lch(35.45, 58.87, 290.06°)
OKLab	oklab(45.05% -0.0229 -0.1596)
OKLCH	oklch(45.05% 0.161 261.8)
XYZ	xyz(10.7712, 8.7258, 40.6436)
Luminance	0.0873 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4EAD #AD7C1D

analogous

#1D96AD #1D4EAD #341DAD

triadic

#1D4EAD #AD1D4E #4EAD1D

tetradic

#1D4EAD #AD1D96 #AD7C1D #1DAD34

square

#1D4EAD #AD1D96 #AD7C1D #1DAD34

split-complementary

#1D4EAD #AD341D #96AD1D

monochromatic

#0B1F44 #143679 #1D4EAD #2C68DC #608DE4

Accessibility & contrast

On white

7.65

#1D4EAD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.75

#1D4EAD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4EAD

7.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4EAD	#FFFFFF	#000000	##FFFFFF
##1D4EAD	1.00	7.65	2.75	7.65
#FFFFFF	7.65	1.00	21.00	1.00
#000000	2.75	21.00	1.00	21.00
##FFFFFF	7.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005AB0

Deuteranopia (green-blind)

#004DAB

Tritanopia (blue-blind)

#006676

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #1d4ead;
/* rgb */ color: rgb(29, 78, 173);
/* oklch */ color: oklch(45.1% 0.161 261.8);

Tailwind

colors: {
  custom: {
    50: '#737ec6',
    500: '#1d4ead',
    950: '#000000',
  },
}

SCSS

$custom: #1d4ead;
$custom-light: #737ec6;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4ead",
  "rgb": {
    "r": 29,
    "g": 78,
    "b": 173
  },
  "hsl": {
    "h": 219.583,
    "s": 71.287,
    "l": 39.608
  },
  "oklch": {
    "l": 0.45053,
    "c": 0.16123,
    "h": 261.8
  },
  "luminance": 0.08727
}

Semantic roles & 50–950 ramp

primary

#1D4EAD

secondary

#C9A45D

accent

#B13AEE

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#090A13

muted

#7B7C82

Preview Lab

Preview with #1D4EAD

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

Preview Lab → · Contrast checker → · Palette generator →