#1F47AD#1F47AD

#1F47AD is a dark, vivid blue. Relative luminance 0.078; OKLCH L 43.7% C 0.169 H 264.2°. Best body text is #FFFFFF at 8.19:1 contrast (WCAG AA passes).

Color values

HEX	#1F47AD
RGB	rgb(31, 71, 173)
HSL	hsl(223, 70%, 40%)
HSV	hsv(223, 82%, 68%)
CMYK	cmyk(82.1%, 59%, 0%, 32.2%)
CIE-LAB	lab(33.59, 25.07, -58.32)
CIE-LCH	lch(33.59, 63.48, 293.26°)
OKLab	oklab(43.67% -0.0171 -0.1686)
OKLCH	oklch(43.67% 0.169 264.2)
XYZ	xyz(10.3585, 7.8137, 40.4893)
Luminance	0.0781 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F47AD #AD851F

analogous

#1F8EAD #1F47AD #3E1FAD

triadic

#1F47AD #AD1F47 #47AD1F

tetradic

#1F47AD #AD1F8E #AD851F #1FAD3E

square

#1F47AD #AD1F8E #AD851F #1FAD3E

split-complementary

#1F47AD #AD3E1F #8EAD1F

monochromatic

#0C1C45 #163279 #1F47AD #2F5FDA #6387E3

Accessibility & contrast

On white

8.19

#1F47AD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#1F47AD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F47AD

8.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F47AD	#FFFFFF	#000000	##FFFFFF
##1F47AD	1.00	8.19	2.56	8.19
#FFFFFF	8.19	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056B0

Deuteranopia (green-blind)

#0049AB

Tritanopia (blue-blind)

#006173

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1f47ad;
/* rgb */ color: rgb(31, 71, 173);
/* oklch */ color: oklch(43.7% 0.169 264.2);

Tailwind

colors: {
  custom: {
    50: '#7479c6',
    500: '#1f47ad',
    950: '#000000',
  },
}

SCSS

$custom: #1f47ad;
$custom-light: #7479c6;
$custom-dark: #000000;

JSON

{
  "hex": "#1f47ad",
  "rgb": {
    "r": 31,
    "g": 71,
    "b": 173
  },
  "hsl": {
    "h": 223.099,
    "s": 69.608,
    "l": 40
  },
  "oklch": {
    "l": 0.43669,
    "c": 0.16945,
    "h": 264.2
  },
  "luminance": 0.07815
}

Semantic roles & 50–950 ramp

primary

#1F47AD

secondary

#C8AB60

accent

#BB3BEC

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0913

muted

#7C7B82

Preview Lab

Preview with #1F47AD

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

Preview Lab → · Contrast checker → · Palette generator →