#1F47AE#1F47AE

#1F47AE is a dark, vivid blue. Relative luminance 0.079; OKLCH L 43.8% C 0.171 H 264.3°. Best body text is #FFFFFF at 8.17:1 contrast (WCAG AA passes).

Color values

HEX	#1F47AE
RGB	rgb(31, 71, 174)
HSL	hsl(223, 70%, 40%)
HSV	hsv(223, 82%, 68%)
CMYK	cmyk(82.2%, 59.2%, 0%, 31.8%)
CIE-LAB	lab(33.67, 25.46, -58.78)
CIE-LCH	lch(33.67, 64.06, 293.42°)
OKLab	oklab(43.76% -0.0171 -0.1699)
OKLCH	oklch(43.76% 0.171 264.3)
XYZ	xyz(10.4556, 7.8525, 41.0008)
Luminance	0.0785 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F47AE #AE861F

analogous

#1F8EAE #1F47AE #3F1FAE

triadic

#1F47AE #AE1F47 #47AE1F

tetradic

#1F47AE #AE1F8E #AE861F #1FAE3F

square

#1F47AE #AE1F8E #AE861F #1FAE3F

split-complementary

#1F47AE #AE3F1F #8EAE1F

monochromatic

#0C1D46 #16327A #1F47AE #3060DA #6488E3

Accessibility & contrast

On white

8.17

#1F47AE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#1F47AE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F47AE

8.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F47AE	#FFFFFF	#000000	##FFFFFF
##1F47AE	1.00	8.17	2.57	8.17
#FFFFFF	8.17	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056B1

Deuteranopia (green-blind)

#0049AC

Tritanopia (blue-blind)

#006173

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1f47ae;
/* rgb */ color: rgb(31, 71, 174);
/* oklch */ color: oklch(43.8% 0.171 264.3);

Tailwind

colors: {
  custom: {
    50: '#7479c7',
    500: '#1f47ae',
    950: '#000000',
  },
}

SCSS

$custom: #1f47ae;
$custom-light: #7479c7;
$custom-dark: #000000;

JSON

{
  "hex": "#1f47ae",
  "rgb": {
    "r": 31,
    "g": 71,
    "b": 174
  },
  "hsl": {
    "h": 223.217,
    "s": 69.756,
    "l": 40.196
  },
  "oklch": {
    "l": 0.43756,
    "c": 0.1708,
    "h": 264.3
  },
  "luminance": 0.07854
}

Semantic roles & 50–950 ramp

primary

#1F47AE

secondary

#C8AB60

accent

#BB3BED

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0913

muted

#7C7B82

Preview Lab

Preview with #1F47AE

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

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