#1B4497#1B4497

#1B4497 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.0% C 0.144 H 262.3°. Best body text is #FFFFFF at 9.05:1 contrast (WCAG AA passes).

Color values

HEX	#1B4497
RGB	rgb(27, 68, 151)
HSL	hsl(220, 70%, 35%)
HSV	hsv(220, 82%, 59%)
CMYK	cmyk(82.1%, 55%, 0%, 40.8%)
CIE-LAB	lab(30.88, 17.99, -49.49)
CIE-LCH	lch(30.88, 52.65, 289.98°)
OKLab	oklab(41.04% -0.0193 -0.1427)
OKLCH	oklch(41.04% 0.144 262.3)
XYZ	xyz(8.1030, 6.6007, 30.1191)
Luminance	0.0660 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4497 #976E1B

analogous

#1B8297 #1B4497 #301B97

triadic

#1B4497 #971B44 #44971B

tetradic

#1B4497 #971B82 #976E1B #1B9730

square

#1B4497 #971B82 #976E1B #1B9730

split-complementary

#1B4497 #97301B #82971B

monochromatic

#08152F #122D63 #1B4497 #245BCB #4D7DDF

Accessibility & contrast

On white

9.05

#1B4497 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#1B4497 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4497

9.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4497	#FFFFFF	#000000	##FFFFFF
##1B4497	1.00	9.05	2.32	9.05
#FFFFFF	9.05	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004F9A

Deuteranopia (green-blind)

#004395

Tritanopia (blue-blind)

#005866

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1b4497;
/* rgb */ color: rgb(27, 68, 151);
/* oklch */ color: oklch(41.0% 0.144 262.3);

Tailwind

colors: {
  custom: {
    50: '#6d77b6',
    500: '#1b4497',
    950: '#000000',
  },
}

SCSS

$custom: #1b4497;
$custom-light: #6d77b6;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4497",
  "rgb": {
    "r": 27,
    "g": 68,
    "b": 151
  },
  "hsl": {
    "h": 220.161,
    "s": 69.663,
    "l": 34.902
  },
  "oklch": {
    "l": 0.41038,
    "c": 0.14406,
    "h": 262.3
  },
  "luminance": 0.06602
}

Semantic roles & 50–950 ramp

primary

#1B4497

secondary

#C19B4C

accent

#B23BEC

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1B4497

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

Preview Lab → · Contrast checker → · Palette generator →