#1B54A4#1B54A4

#1B54A4 is a mid, vivid blue. Relative luminance 0.093; OKLCH L 45.6% C 0.142 H 258.0°. Best body text is #FFFFFF at 7.37:1 contrast (WCAG AA passes).

Color values

HEX	#1B54A4
RGB	rgb(27, 84, 164)
HSL	hsl(215, 72%, 37%)
HSV	hsv(215, 84%, 64%)
CMYK	cmyk(83.5%, 48.8%, 0%, 35.7%)
CIE-LAB	lab(36.47, 12.39, -48.29)
CIE-LCH	lch(36.47, 49.86, 284.39°)
OKLab	oklab(45.61% -0.0295 -0.1389)
OKLCH	oklch(45.61% 0.142 258)
XYZ	xyz(10.3207, 9.2527, 36.3568)
Luminance	0.0925 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B54A4 #A46B1B

analogous

#1B99A4 #1B54A4 #261BA4

triadic

#1B54A4 #A41B54 #54A41B

tetradic

#1B54A4 #A41B99 #A46B1B #1BA426

square

#1B54A4 #A41B99 #A46B1B #1BA426

split-complementary

#1B54A4 #A4261B #99A41B

monochromatic

#0A1E3B #12396F #1B54A4 #246FD9 #5691E3

Accessibility & contrast

On white

7.37

#1B54A4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.85

#1B54A4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B54A4

7.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B54A4	#FFFFFF	#000000	##FFFFFF
##1B54A4	1.00	7.37	2.85	7.37
#FFFFFF	7.37	1.00	21.00	1.00
#000000	2.85	21.00	1.00	21.00
##FFFFFF	7.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#255CA7

Deuteranopia (green-blind)

#0050A2

Tritanopia (blue-blind)

#006774

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #1b54a4;
/* rgb */ color: rgb(27, 84, 164);
/* oklch */ color: oklch(45.6% 0.142 258.0);

Tailwind

colors: {
  custom: {
    50: '#7083bf',
    500: '#1b54a4',
    950: '#000000',
  },
}

SCSS

$custom: #1b54a4;
$custom-light: #7083bf;
$custom-dark: #000000;

JSON

{
  "hex": "#1b54a4",
  "rgb": {
    "r": 27,
    "g": 84,
    "b": 164
  },
  "hsl": {
    "h": 215.036,
    "s": 71.728,
    "l": 37.451
  },
  "oklch": {
    "l": 0.45607,
    "c": 0.142,
    "h": 258
  },
  "luminance": 0.09254
}

Semantic roles & 50–950 ramp

primary

#1B54A4

secondary

#C69754

accent

#A339EE

background

#F7F7FB

surface

#EDEEF7

border

#C8C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #1B54A4

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

Preview Lab → · Contrast checker → · Palette generator →