#1F47A0#1F47A0

#1F47A0 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 42.6% C 0.152 H 263.2°. Best body text is #FFFFFF at 8.51:1 contrast (WCAG AA passes).

Color values

HEX	#1F47A0
RGB	rgb(31, 71, 160)
HSL	hsl(221, 68%, 37%)
HSV	hsv(221, 81%, 63%)
CMYK	cmyk(80.6%, 55.6%, 0%, 37.3%)
CIE-LAB	lab(32.56, 19.95, -52.21)
CIE-LCH	lch(32.56, 55.89, 290.91°)
OKLab	oklab(42.57% -0.0179 -0.1506)
OKLCH	oklch(42.57% 0.152 263.2)
XYZ	xyz(9.1612, 7.3348, 34.1838)
Luminance	0.0734 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F47A0 #A0781F

analogous

#1F88A0 #1F47A0 #371FA0

triadic

#1F47A0 #A01F47 #47A01F

tetradic

#1F47A0 #A01F88 #A0781F #1FA037

square

#1F47A0 #A01F88 #A0781F #1FA037

split-complementary

#1F47A0 #A0371F #88A01F

monochromatic

#0B1A39 #15306D #1F47A0 #295ED3 #5A83DF

Accessibility & contrast

On white

8.51

#1F47A0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#1F47A0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F47A0

8.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F47A0	#FFFFFF	#000000	##FFFFFF
##1F47A0	1.00	8.51	2.47	8.51
#FFFFFF	8.51	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053A3

Deuteranopia (green-blind)

#00479E

Tritanopia (blue-blind)

#005D6C

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #1f47a0;
/* rgb */ color: rgb(31, 71, 160);
/* oklch */ color: oklch(42.6% 0.152 263.2);

Tailwind

colors: {
  custom: {
    50: '#7079bd',
    500: '#1f47a0',
    950: '#000000',
  },
}

SCSS

$custom: #1f47a0;
$custom-light: #7079bd;
$custom-dark: #000000;

JSON

{
  "hex": "#1f47a0",
  "rgb": {
    "r": 31,
    "g": 71,
    "b": 160
  },
  "hsl": {
    "h": 221.395,
    "s": 67.539,
    "l": 37.451
  },
  "oklch": {
    "l": 0.42565,
    "c": 0.1517,
    "h": 263.2
  },
  "luminance": 0.07336
}

Semantic roles & 50–950 ramp

primary

#1F47A0

secondary

#C3A258

accent

#B53DEA

background

#F7F7FB

surface

#EDEDF7

border

#C8C8D0

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1F47A0

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

Preview Lab → · Contrast checker → · Palette generator →