#1B4EA0#1B4EA0

#1B4EA0 is a dark, vivid blue. Relative luminance 0.082; OKLCH L 44.0% C 0.144 H 259.8°. Best body text is #FFFFFF at 7.94:1 contrast (WCAG AA passes).

Color values

HEX	#1B4EA0
RGB	rgb(27, 78, 160)
HSL	hsl(217, 71%, 37%)
HSV	hsv(217, 83%, 63%)
CMYK	cmyk(83.1%, 51.2%, 0%, 37.3%)
CIE-LAB	lab(34.43, 14.81, -49.18)
CIE-LCH	lch(34.43, 51.36, 286.76°)
OKLab	oklab(43.96% -0.0256 -0.1416)
OKLCH	oklch(43.96% 0.144 259.8)
XYZ	xyz(9.5192, 8.2187, 34.3355)
Luminance	0.0822 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4EA0 #A06D1B

analogous

#1B91A0 #1B4EA0 #2A1BA0

triadic

#1B4EA0 #A01B4E #4EA01B

tetradic

#1B4EA0 #A01B91 #A06D1B #1BA02A

square

#1B4EA0 #A01B91 #A06D1B #1BA02A

split-complementary

#1B4EA0 #A02A1B #91A01B

monochromatic

#091B37 #12346C #1B4EA0 #2468D4 #538AE2

Accessibility & contrast

On white

7.94

#1B4EA0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.64

#1B4EA0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4EA0

7.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4EA0	#FFFFFF	#000000	##FFFFFF
##1B4EA0	1.00	7.94	2.64	7.94
#FFFFFF	7.94	1.00	21.00	1.00
#000000	2.64	21.00	1.00	21.00
##FFFFFF	7.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1957A3

Deuteranopia (green-blind)

#004B9E

Tritanopia (blue-blind)

#00626F

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #1b4ea0;
/* rgb */ color: rgb(27, 78, 160);
/* oklch */ color: oklch(44.0% 0.144 259.8);

Tailwind

colors: {
  custom: {
    50: '#6f7ebd',
    500: '#1b4ea0',
    950: '#000000',
  },
}

SCSS

$custom: #1b4ea0;
$custom-light: #6f7ebd;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4ea0",
  "rgb": {
    "r": 27,
    "g": 78,
    "b": 160
  },
  "hsl": {
    "h": 216.992,
    "s": 71.123,
    "l": 36.667
  },
  "oklch": {
    "l": 0.43959,
    "c": 0.14392,
    "h": 259.8
  },
  "luminance": 0.0822
}

Semantic roles & 50–950 ramp

primary

#1B4EA0

secondary

#C59952

accent

#A93AEE

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #1B4EA0

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

Preview Lab → · Contrast checker → · Palette generator →