#1D4FAC#1D4FAC

#1D4FAC is a mid, vivid blue. Relative luminance 0.088; OKLCH L 45.2% C 0.159 H 261.4°. Best body text is #FFFFFF at 7.59:1 contrast (WCAG AA passes).

Color values

HEX	#1D4FAC
RGB	rgb(29, 79, 172)
HSL	hsl(219, 71%, 39%)
HSV	hsv(219, 83%, 67%)
CMYK	cmyk(83.1%, 54.1%, 0%, 32.5%)
CIE-LAB	lab(35.66, 19.12, -54.37)
CIE-LCH	lch(35.66, 57.63, 289.38°)
OKLab	oklab(45.18% -0.0237 -0.1569)
OKLCH	oklch(45.18% 0.159 261.4)
XYZ	xyz(10.7464, 8.8304, 40.1598)
Luminance	0.0883 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4FAC #AC7A1D

analogous

#1D97AC #1D4FAC #331DAC

triadic

#1D4FAC #AC1D4F #4FAC1D

tetradic

#1D4FAC #AC1D97 #AC7A1D #1DAC33

square

#1D4FAC #AC1D97 #AC7A1D #1DAC33

split-complementary

#1D4FAC #AC331D #97AC1D

monochromatic

#0B1F43 #143778 #1D4FAC #2B69DB #5F8EE4

Accessibility & contrast

On white

7.59

#1D4FAC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.77

#1D4FAC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4FAC

7.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4FAC	#FFFFFF	#000000	##FFFFFF
##1D4FAC	1.00	7.59	2.77	7.59
#FFFFFF	7.59	1.00	21.00	1.00
#000000	2.77	21.00	1.00	21.00
##FFFFFF	7.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BAF

Deuteranopia (green-blind)

#004EAA

Tritanopia (blue-blind)

#006675

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #1d4fac;
/* rgb */ color: rgb(29, 79, 172);
/* oklch */ color: oklch(45.2% 0.159 261.4);

Tailwind

colors: {
  custom: {
    50: '#727fc5',
    500: '#1d4fac',
    950: '#000000',
  },
}

SCSS

$custom: #1d4fac;
$custom-light: #727fc5;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4fac",
  "rgb": {
    "r": 29,
    "g": 79,
    "b": 172
  },
  "hsl": {
    "h": 219.021,
    "s": 71.144,
    "l": 39.412
  },
  "oklch": {
    "l": 0.45185,
    "c": 0.15864,
    "h": 261.4
  },
  "luminance": 0.08832
}

Semantic roles & 50–950 ramp

primary

#1D4FAC

secondary

#C8A35C

accent

#AF3AEE

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#090A13

muted

#7B7C82

Preview Lab

Preview with #1D4FAC

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

Preview Lab → · Contrast checker → · Palette generator →