#1B54B4#1B54B4

#1B54B4 is a mid, vivid blue. Relative luminance 0.099; OKLCH L 46.8% C 0.164 H 260.4°. Best body text is #FFFFFF at 7.06:1 contrast (WCAG AA passes).

Color values

HEX	#1B54B4
RGB	rgb(27, 84, 180)
HSL	hsl(218, 74%, 41%)
HSV	hsv(218, 85%, 71%)
CMYK	cmyk(85%, 53.3%, 0%, 29.4%)
CIE-LAB	lab(37.60, 18.79, -55.95)
CIE-LCH	lch(37.60, 59.02, 288.56°)
OKLab	oklab(46.84% -0.0273 -0.1614)
OKLCH	oklch(46.84% 0.164 260.4)
XYZ	xyz(11.8575, 9.8675, 44.4508)
Luminance	0.0987 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B54B4 #B47B1B

analogous

#1BA0B4 #1B54B4 #2E1BB4

triadic

#1B54B4 #B41B54 #54B41B

tetradic

#1B54B4 #B41BA0 #B47B1B #1BB42E

square

#1B54B4 #B41BA0 #B47B1B #1BB42E

split-complementary

#1B54B4 #B42E1B #A0B41B

monochromatic

#0B224A #133B7F #1B54B4 #2D6FDF #6294E7

Accessibility & contrast

On white

7.06

#1B54B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.97

#1B54B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B54B4

7.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B54B4	#FFFFFF	#000000	##FFFFFF
##1B54B4	1.00	7.06	2.97	7.06
#FFFFFF	7.06	1.00	21.00	1.00
#000000	2.97	21.00	1.00	21.00
##FFFFFF	7.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0560B7

Deuteranopia (green-blind)

#0052B2

Tritanopia (blue-blind)

#006C7C

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #1b54b4;
/* rgb */ color: rgb(27, 84, 180);
/* oklch */ color: oklch(46.8% 0.164 260.4);

Tailwind

colors: {
  custom: {
    50: '#7483cb',
    500: '#1b54b4',
    950: '#000000',
  },
}

SCSS

$custom: #1b54b4;
$custom-light: #7483cb;
$custom-dark: #000000;

JSON

{
  "hex": "#1b54b4",
  "rgb": {
    "r": 27,
    "g": 84,
    "b": 180
  },
  "hsl": {
    "h": 217.647,
    "s": 73.913,
    "l": 40.588
  },
  "oklch": {
    "l": 0.46839,
    "c": 0.16371,
    "h": 260.4
  },
  "luminance": 0.09869
}

Semantic roles & 50–950 ramp

primary

#1B54B4

secondary

#CCA35F

accent

#AC37F1

background

#F7F7FC

surface

#EEEEF9

border

#C9C9D2

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #1B54B4

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

Preview Lab → · Contrast checker → · Palette generator →