#1D4FA6#1D4FA6

#1D4FA6 is a dark, vivid blue. Relative luminance 0.086; OKLCH L 44.7% C 0.150 H 260.7°. Best body text is #FFFFFF at 7.72:1 contrast (WCAG AA passes).

Color values

HEX	#1D4FA6
RGB	rgb(29, 79, 166)
HSL	hsl(218, 70%, 38%)
HSV	hsv(218, 83%, 65%)
CMYK	cmyk(82.5%, 52.4%, 0%, 34.9%)
CIE-LAB	lab(35.21, 16.73, -51.51)
CIE-LCH	lch(35.21, 54.16, 287.99°)
OKLab	oklab(44.71% -0.0244 -0.1484)
OKLCH	oklch(44.71% 0.15 260.7)
XYZ	xyz(10.1831, 8.6051, 37.1933)
Luminance	0.0861 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4FA6 #A6741D

analogous

#1D93A6 #1D4FA6 #2F1DA6

triadic

#1D4FA6 #A61D4F #4FA61D

tetradic

#1D4FA6 #A61D93 #A6741D #1DA62F

square

#1D4FA6 #A61D93 #A6741D #1DA62F

split-complementary

#1D4FA6 #A62F1D #93A61D

monochromatic

#0B1D3E #143672 #1D4FA6 #2768D9 #5B8CE2

Accessibility & contrast

On white

7.72

#1D4FA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.72

#1D4FA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4FA6

7.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4FA6	#FFFFFF	#000000	##FFFFFF
##1D4FA6	1.00	7.72	2.72	7.72
#FFFFFF	7.72	1.00	21.00	1.00
#000000	2.72	21.00	1.00	21.00
##FFFFFF	7.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1259A9

Deuteranopia (green-blind)

#004DA4

Tritanopia (blue-blind)

#006473

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #1d4fa6;
/* rgb */ color: rgb(29, 79, 166);
/* oklch */ color: oklch(44.7% 0.150 260.7);

Tailwind

colors: {
  custom: {
    50: '#717fc1',
    500: '#1d4fa6',
    950: '#000000',
  },
}

SCSS

$custom: #1d4fa6;
$custom-light: #717fc1;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4fa6",
  "rgb": {
    "r": 29,
    "g": 79,
    "b": 166
  },
  "hsl": {
    "h": 218.102,
    "s": 70.256,
    "l": 38.235
  },
  "oklch": {
    "l": 0.44707,
    "c": 0.15044,
    "h": 260.7
  },
  "luminance": 0.08606
}

Semantic roles & 50–950 ramp

primary

#1D4FA6

secondary

#C69E59

accent

#AC3BED

background

#F7F7FB

surface

#EDEEF7

border

#C8C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #1D4FA6

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

Preview Lab → · Contrast checker → · Palette generator →