#1F48A6#1F48A6

#1F48A6 is a dark, vivid blue. Relative luminance 0.077; OKLCH L 43.3% C 0.159 H 263.4°. Best body text is #FFFFFF at 8.28:1 contrast (WCAG AA passes).

Color values

HEX	#1F48A6
RGB	rgb(31, 72, 166)
HSL	hsl(222, 69%, 39%)
HSV	hsv(222, 81%, 65%)
CMYK	cmyk(81.3%, 56.6%, 0%, 34.9%)
CIE-LAB	lab(33.30, 21.65, -54.61)
CIE-LCH	lch(33.30, 58.74, 291.63°)
OKLab	oklab(43.28% -0.0182 -0.1577)
OKLCH	oklch(43.28% 0.159 263.4)
XYZ	xyz(9.7629, 7.6780, 37.0365)
Luminance	0.0768 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F48A6 #A67D1F

analogous

#1F8BA6 #1F48A6 #391FA6

triadic

#1F48A6 #A61F48 #48A61F

tetradic

#1F48A6 #A61F8B #A67D1F #1FA639

square

#1F48A6 #A61F8B #A67D1F #1FA639

split-complementary

#1F48A6 #A6391F #8BA61F

monochromatic

#0C1B3F #153272 #1F48A6 #2B5FD7 #5E86E1

Accessibility & contrast

On white

8.28

#1F48A6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#1F48A6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F48A6

8.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F48A6	#FFFFFF	#000000	##FFFFFF
##1F48A6	1.00	8.28	2.54	8.28
#FFFFFF	8.28	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055A9

Deuteranopia (green-blind)

#0048A4

Tritanopia (blue-blind)

#005F70

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1f48a6;
/* rgb */ color: rgb(31, 72, 166);
/* oklch */ color: oklch(43.3% 0.159 263.4);

Tailwind

colors: {
  custom: {
    50: '#727ac1',
    500: '#1f48a6',
    950: '#000000',
  },
}

SCSS

$custom: #1f48a6;
$custom-light: #727ac1;
$custom-dark: #000000;

JSON

{
  "hex": "#1f48a6",
  "rgb": {
    "r": 31,
    "g": 72,
    "b": 166
  },
  "hsl": {
    "h": 221.778,
    "s": 68.528,
    "l": 38.627
  },
  "oklch": {
    "l": 0.43276,
    "c": 0.1587,
    "h": 263.4
  },
  "luminance": 0.07679
}

Semantic roles & 50–950 ramp

primary

#1F48A6

secondary

#C5A55B

accent

#B63CEB

background

#F7F7FC

surface

#EDEDF8

border

#C8C8D1

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1F48A6

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

Preview Lab → · Contrast checker → · Palette generator →