#1F54C3#1F54C3

#1F54C3 is a mid, vivid blue. Relative luminance 0.106; OKLCH L 48.2% C 0.183 H 262.5°. Best body text is #FFFFFF at 6.74:1 contrast (WCAG AA passes).

Color values

HEX	#1F54C3
RGB	rgb(31, 84, 195)
HSL	hsl(221, 73%, 44%)
HSV	hsv(221, 84%, 76%)
CMYK	cmyk(84.1%, 56.9%, 0%, 23.5%)
CIE-LAB	lab(38.85, 24.99, -62.71)
CIE-LCH	lch(38.85, 67.50, 291.73°)
OKLab	oklab(48.17% -0.0238 -0.1812)
OKLCH	oklch(48.17% 0.183 262.5)
XYZ	xyz(13.5822, 10.5704, 52.9436)
Luminance	0.1057 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F54C3 #C38E1F

analogous

#1FA6C3 #1F54C3 #3C1FC3

triadic

#1F54C3 #C31F54 #54C31F

tetradic

#1F54C3 #C31FA6 #C38E1F #1FC33C

square

#1F54C3 #C31FA6 #C38E1F #1FC33C

split-complementary

#1F54C3 #C33C1F #A6C31F

monochromatic

#0E2759 #173D8E #1F54C3 #3F73E0 #7499E9

Accessibility & contrast

On white

6.74

#1F54C3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.11

#1F54C3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1F54C3

6.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F54C3	#FFFFFF	#000000	##FFFFFF
##1F54C3	1.00	6.74	3.11	6.74
#FFFFFF	6.74	1.00	21.00	1.00
#000000	3.11	21.00	1.00	21.00
##FFFFFF	6.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063C7

Deuteranopia (green-blind)

#0054C1

Tritanopia (blue-blind)

#007083

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #1f54c3;
/* rgb */ color: rgb(31, 84, 195);
/* oklch */ color: oklch(48.2% 0.183 262.5);

Tailwind

colors: {
  custom: {
    50: '#7983d6',
    500: '#1f54c3',
    950: '#000000',
  },
}

SCSS

$custom: #1f54c3;
$custom-light: #7983d6;
$custom-dark: #000000;

JSON

{
  "hex": "#1f54c3",
  "rgb": {
    "r": 31,
    "g": 84,
    "b": 195
  },
  "hsl": {
    "h": 220.61,
    "s": 72.566,
    "l": 44.314
  },
  "oklch": {
    "l": 0.4817,
    "c": 0.18279,
    "h": 262.5
  },
  "luminance": 0.10572
}

Semantic roles & 50–950 ramp

primary

#1F54C3

secondary

#D0B06E

accent

#B439EF

background

#F8F8FD

surface

#EFEFFA

border

#CACAD3

text

#0B0A14

muted

#7C7C83

Preview Lab

Preview with #1F54C3

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

Preview Lab → · Contrast checker → · Palette generator →