#1F48A0#1F48A0

#1F48A0 is a dark, vivid blue. Relative luminance 0.075; OKLCH L 42.8% C 0.150 H 262.9°. Best body text is #FFFFFF at 8.42:1 contrast (WCAG AA passes).

Color values

HEX	#1F48A0
RGB	rgb(31, 72, 160)
HSL	hsl(221, 68%, 37%)
HSV	hsv(221, 81%, 63%)
CMYK	cmyk(80.6%, 55%, 0%, 37.3%)
CIE-LAB	lab(32.84, 19.27, -51.75)
CIE-LCH	lch(32.84, 55.23, 290.42°)
OKLab	oklab(42.78% -0.0187 -0.1493)
OKLCH	oklch(42.78% 0.15 262.9)
XYZ	xyz(9.2253, 7.4630, 34.2052)
Luminance	0.0746 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F48A0 #A0771F

analogous

#1F89A0 #1F48A0 #361FA0

triadic

#1F48A0 #A01F48 #48A01F

tetradic

#1F48A0 #A01F89 #A0771F #1FA036

square

#1F48A0 #A01F89 #A0771F #1FA036

split-complementary

#1F48A0 #A0361F #89A01F

monochromatic

#0B1A39 #15316D #1F48A0 #295FD3 #5A85DF

Accessibility & contrast

On white

8.42

#1F48A0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#1F48A0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F48A0

8.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F48A0	#FFFFFF	#000000	##FFFFFF
##1F48A0	1.00	8.42	2.49	8.42
#FFFFFF	8.42	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053A3

Deuteranopia (green-blind)

#00489E

Tritanopia (blue-blind)

#005E6D

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #1f48a0;
/* rgb */ color: rgb(31, 72, 160);
/* oklch */ color: oklch(42.8% 0.150 262.9);

Tailwind

colors: {
  custom: {
    50: '#707abd',
    500: '#1f48a0',
    950: '#000000',
  },
}

SCSS

$custom: #1f48a0;
$custom-light: #707abd;
$custom-dark: #000000;

JSON

{
  "hex": "#1f48a0",
  "rgb": {
    "r": 31,
    "g": 72,
    "b": 160
  },
  "hsl": {
    "h": 220.93,
    "s": 67.539,
    "l": 37.451
  },
  "oklch": {
    "l": 0.42778,
    "c": 0.15044,
    "h": 262.9
  },
  "luminance": 0.07464
}

Semantic roles & 50–950 ramp

primary

#1F48A0

secondary

#C3A158

accent

#B33DEA

background

#F7F7FB

surface

#EDEDF7

border

#C8C8D0

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1F48A0

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

Preview Lab → · Contrast checker → · Palette generator →