#1D4EAC#1D4EAC

#1D4EAC is a dark, vivid blue. Relative luminance 0.087; OKLCH L 45.0% C 0.160 H 261.7°. Best body text is #FFFFFF at 7.67:1 contrast (WCAG AA passes).

Color values

HEX	#1D4EAC
RGB	rgb(29, 78, 172)
HSL	hsl(219, 71%, 39%)
HSV	hsv(219, 83%, 67%)
CMYK	cmyk(83.1%, 54.7%, 0%, 32.5%)
CIE-LAB	lab(35.37, 19.79, -54.82)
CIE-LCH	lch(35.37, 58.29, 289.85°)
OKLab	oklab(44.97% -0.023 -0.1582)
OKLCH	oklch(44.97% 0.16 261.7)
XYZ	xyz(10.6748, 8.6872, 40.1359)
Luminance	0.0869 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4EAC #AC7B1D

analogous

#1D95AC #1D4EAC #341DAC

triadic

#1D4EAC #AC1D4E #4EAC1D

tetradic

#1D4EAC #AC1D95 #AC7B1D #1DAC34

square

#1D4EAC #AC1D95 #AC7B1D #1DAC34

split-complementary

#1D4EAC #AC341D #95AC1D

monochromatic

#0B1F43 #143678 #1D4EAC #2B67DB #5F8DE4

Accessibility & contrast

On white

7.67

#1D4EAC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.74

#1D4EAC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4EAC

7.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4EAC	#FFFFFF	#000000	##FFFFFF
##1D4EAC	1.00	7.67	2.74	7.67
#FFFFFF	7.67	1.00	21.00	1.00
#000000	2.74	21.00	1.00	21.00
##FFFFFF	7.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005AAF

Deuteranopia (green-blind)

#004DAA

Tritanopia (blue-blind)

#006575

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #1d4eac;
/* rgb */ color: rgb(29, 78, 172);
/* oklch */ color: oklch(45.0% 0.160 261.7);

Tailwind

colors: {
  custom: {
    50: '#737ec5',
    500: '#1d4eac',
    950: '#000000',
  },
}

SCSS

$custom: #1d4eac;
$custom-light: #737ec5;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4eac",
  "rgb": {
    "r": 29,
    "g": 78,
    "b": 172
  },
  "hsl": {
    "h": 219.441,
    "s": 71.144,
    "l": 39.412
  },
  "oklch": {
    "l": 0.44972,
    "c": 0.15988,
    "h": 261.7
  },
  "luminance": 0.08689
}

Semantic roles & 50–950 ramp

primary

#1D4EAC

secondary

#C8A35C

accent

#B03AEE

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#090A13

muted

#7B7C82

Preview Lab

Preview with #1D4EAC

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

Preview Lab → · Contrast checker → · Palette generator →