#1F54AD#1F54AD

#1F54AD is a mid, vivid blue. Relative luminance 0.096; OKLCH L 46.4% C 0.153 H 260.3°. Best body text is #FFFFFF at 7.17:1 contrast (WCAG AA passes).

Color values

HEX	#1F54AD
RGB	rgb(31, 84, 173)
HSL	hsl(218, 70%, 40%)
HSV	hsv(218, 82%, 68%)
CMYK	cmyk(82.1%, 51.4%, 0%, 32.2%)
CIE-LAB	lab(37.20, 16.36, -52.45)
CIE-LCH	lch(37.20, 54.95, 287.32°)
OKLab	oklab(46.4% -0.0259 -0.1511)
OKLCH	oklch(46.4% 0.153 260.3)
XYZ	xyz(11.2755, 9.6477, 40.7950)
Luminance	0.0965 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F54AD #AD781F

analogous

#1F9BAD #1F54AD #311FAD

triadic

#1F54AD #AD1F54 #54AD1F

tetradic

#1F54AD #AD1F9B #AD781F #1FAD31

square

#1F54AD #AD1F9B #AD781F #1FAD31

split-complementary

#1F54AD #AD311F #9BAD1F

monochromatic

#0C2245 #163B79 #1F54AD #2F6FDA #6393E3

Accessibility & contrast

On white

7.17

#1F54AD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.93

#1F54AD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F54AD

7.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F54AD	#FFFFFF	#000000	##FFFFFF
##1F54AD	1.00	7.17	2.93	7.17
#FFFFFF	7.17	1.00	21.00	1.00
#000000	2.93	21.00	1.00	21.00
##FFFFFF	7.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#195EB0

Deuteranopia (green-blind)

#0051AB

Tritanopia (blue-blind)

#006A78

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #1f54ad;
/* rgb */ color: rgb(31, 84, 173);
/* oklch */ color: oklch(46.4% 0.153 260.3);

Tailwind

colors: {
  custom: {
    50: '#7383c6',
    500: '#1f54ad',
    950: '#000000',
  },
}

SCSS

$custom: #1f54ad;
$custom-light: #7383c6;
$custom-dark: #000000;

JSON

{
  "hex": "#1f54ad",
  "rgb": {
    "r": 31,
    "g": 84,
    "b": 173
  },
  "hsl": {
    "h": 217.606,
    "s": 69.608,
    "l": 40
  },
  "oklch": {
    "l": 0.46403,
    "c": 0.15331,
    "h": 260.3
  },
  "luminance": 0.09649
}

Semantic roles & 50–950 ramp

primary

#1F54AD

secondary

#C8A160

accent

#AA3BEC

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#090A13

muted

#7B7C82

Preview Lab

Preview with #1F54AD

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

Preview Lab → · Contrast checker → · Palette generator →