#1B54AA#1B54AA

#1B54AA is a mid, vivid blue. Relative luminance 0.095; OKLCH L 46.1% C 0.150 H 259.0°. Best body text is #FFFFFF at 7.25:1 contrast (WCAG AA passes).

Color values

HEX	#1B54AA
RGB	rgb(27, 84, 170)
HSL	hsl(216, 73%, 39%)
HSV	hsv(216, 84%, 67%)
CMYK	cmyk(84.1%, 50.6%, 0%, 33.3%)
CIE-LAB	lab(36.88, 14.80, -51.20)
CIE-LCH	lch(36.88, 53.29, 286.12°)
OKLab	oklab(46.06% -0.0286 -0.1474)
OKLCH	oklch(46.06% 0.15 259)
XYZ	xyz(10.8754, 9.4746, 39.2780)
Luminance	0.0948 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B54AA #AA711B

analogous

#1B9BAA #1B54AA #291BAA

triadic

#1B54AA #AA1B54 #54AA1B

tetradic

#1B54AA #AA1B9B #AA711B #1BAA29

square

#1B54AA #AA1B9B #AA711B #1BAA29

split-complementary

#1B54AA #AA291B #9BAA1B

monochromatic

#0A2040 #133A75 #1B54AA #266FDC #5B92E5

Accessibility & contrast

On white

7.25

#1B54AA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.90

#1B54AA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B54AA

7.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B54AA	#FFFFFF	#000000	##FFFFFF
##1B54AA	1.00	7.25	2.90	7.25
#FFFFFF	7.25	1.00	21.00	1.00
#000000	2.90	21.00	1.00	21.00
##FFFFFF	7.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E5EAD

Deuteranopia (green-blind)

#0051A8

Tritanopia (blue-blind)

#006977

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #1b54aa;
/* rgb */ color: rgb(27, 84, 170);
/* oklch */ color: oklch(46.1% 0.150 259.0);

Tailwind

colors: {
  custom: {
    50: '#7183c4',
    500: '#1b54aa',
    950: '#000000',
  },
}

SCSS

$custom: #1b54aa;
$custom-light: #7183c4;
$custom-dark: #000000;

JSON

{
  "hex": "#1b54aa",
  "rgb": {
    "r": 27,
    "g": 84,
    "b": 170
  },
  "hsl": {
    "h": 216.084,
    "s": 72.589,
    "l": 38.627
  },
  "oklch": {
    "l": 0.46059,
    "c": 0.15018,
    "h": 259
  },
  "luminance": 0.09476
}

Semantic roles & 50–950 ramp

primary

#1B54AA

secondary

#C99C58

accent

#A639EF

background

#F7F7FC

surface

#EDEEF8

border

#C8C9D1

text

#090A13

muted

#7B7C82

Preview Lab

Preview with #1B54AA

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

Preview Lab → · Contrast checker → · Palette generator →