#1D4FA7#1D4FA7

#1D4FA7 is a dark, vivid blue. Relative luminance 0.086; OKLCH L 44.8% C 0.152 H 260.8°. Best body text is #FFFFFF at 7.70:1 contrast (WCAG AA passes).

Color values

HEX	#1D4FA7
RGB	rgb(29, 79, 167)
HSL	hsl(218, 70%, 38%)
HSV	hsv(218, 83%, 65%)
CMYK	cmyk(82.6%, 52.7%, 0%, 34.5%)
CIE-LAB	lab(35.29, 17.13, -51.99)
CIE-LCH	lch(35.29, 54.74, 288.24°)
OKLab	oklab(44.79% -0.0242 -0.1499)
OKLCH	oklch(44.79% 0.152 260.8)
XYZ	xyz(10.2752, 8.6419, 37.6782)
Luminance	0.0864 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4FA7 #A7751D

analogous

#1D94A7 #1D4FA7 #301DA7

triadic

#1D4FA7 #A71D4F #4FA71D

tetradic

#1D4FA7 #A71D94 #A7751D #1DA730

square

#1D4FA7 #A71D94 #A7751D #1DA730

split-complementary

#1D4FA7 #A7301D #94A71D

monochromatic

#0B1E3F #143673 #1D4FA7 #2868DA #5C8DE3

Accessibility & contrast

On white

7.70

#1D4FA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.73

#1D4FA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4FA7

7.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4FA7	#FFFFFF	#000000	##FFFFFF
##1D4FA7	1.00	7.70	2.73	7.70
#FFFFFF	7.70	1.00	21.00	1.00
#000000	2.73	21.00	1.00	21.00
##FFFFFF	7.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#105AAA

Deuteranopia (green-blind)

#004DA5

Tritanopia (blue-blind)

#006573

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #1d4fa7;
/* rgb */ color: rgb(29, 79, 167);
/* oklch */ color: oklch(44.8% 0.152 260.8);

Tailwind

colors: {
  custom: {
    50: '#717fc2',
    500: '#1d4fa7',
    950: '#000000',
  },
}

SCSS

$custom: #1d4fa7;
$custom-light: #717fc2;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4fa7",
  "rgb": {
    "r": 29,
    "g": 79,
    "b": 167
  },
  "hsl": {
    "h": 218.261,
    "s": 70.408,
    "l": 38.431
  },
  "oklch": {
    "l": 0.44786,
    "c": 0.15181,
    "h": 260.8
  },
  "luminance": 0.08643
}

Semantic roles & 50–950 ramp

primary

#1D4FA7

secondary

#C79F59

accent

#AC3BED

background

#F7F7FC

surface

#EDEEF8

border

#C8C9D1

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #1D4FA7

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

Preview Lab → · Contrast checker → · Palette generator →