#1F54A5#1F54A5

#1F54A5 is a mid, vivid blue. Relative luminance 0.093; OKLCH L 45.8% C 0.142 H 259.0°. Best body text is #FFFFFF at 7.32:1 contrast (WCAG AA passes).

Color values

HEX	#1F54A5
RGB	rgb(31, 84, 165)
HSL	hsl(216, 68%, 38%)
HSV	hsv(216, 81%, 65%)
CMYK	cmyk(81.2%, 49.1%, 0%, 35.3%)
CIE-LAB	lab(36.64, 13.18, -48.60)
CIE-LCH	lch(36.64, 50.35, 285.18°)
OKLab	oklab(45.8% -0.0271 -0.1398)
OKLCH	oklch(45.8% 0.142 259)
XYZ	xyz(10.5244, 9.3473, 36.8395)
Luminance	0.0935 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F54A5 #A5701F

analogous

#1F97A5 #1F54A5 #2D1FA5

triadic

#1F54A5 #A51F54 #54A51F

tetradic

#1F54A5 #A51F97 #A5701F #1FA52D

square

#1F54A5 #A51F97 #A5701F #1FA52D

split-complementary

#1F54A5 #A52D1F #97A51F

monochromatic

#0C203E #153A71 #1F54A5 #2A6FD7 #5E92E1

Accessibility & contrast

On white

7.32

#1F54A5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.87

#1F54A5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F54A5

7.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F54A5	#FFFFFF	#000000	##FFFFFF
##1F54A5	1.00	7.32	2.87	7.32
#FFFFFF	7.32	1.00	21.00	1.00
#000000	2.87	21.00	1.00	21.00
##FFFFFF	7.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#255DA8

Deuteranopia (green-blind)

#0051A3

Tritanopia (blue-blind)

#006774

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #1f54a5;
/* rgb */ color: rgb(31, 84, 165);
/* oklch */ color: oklch(45.8% 0.142 259.0);

Tailwind

colors: {
  custom: {
    50: '#7183c0',
    500: '#1f54a5',
    950: '#000000',
  },
}

SCSS

$custom: #1f54a5;
$custom-light: #7183c0;
$custom-dark: #000000;

JSON

{
  "hex": "#1f54a5",
  "rgb": {
    "r": 31,
    "g": 84,
    "b": 165
  },
  "hsl": {
    "h": 216.269,
    "s": 68.367,
    "l": 38.431
  },
  "oklch": {
    "l": 0.45797,
    "c": 0.14235,
    "h": 259
  },
  "luminance": 0.09349
}

Semantic roles & 50–950 ramp

primary

#1F54A5

secondary

#C59B5B

accent

#A63DEB

background

#F7F7FB

surface

#EDEEF7

border

#C8C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #1F54A5

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

Preview Lab → · Contrast checker → · Palette generator →