#1B4D97#1B4D97

#1B4D97 is a dark, vivid blue. Relative luminance 0.078; OKLCH L 43.0% C 0.133 H 258.6°. Best body text is #FFFFFF at 8.22:1 contrast (WCAG AA passes).

Color values

HEX	#1B4D97
RGB	rgb(27, 77, 151)
HSL	hsl(216, 70%, 35%)
HSV	hsv(216, 82%, 59%)
CMYK	cmyk(82.1%, 49%, 0%, 40.8%)
CIE-LAB	lab(33.51, 11.85, -45.24)
CIE-LCH	lch(33.51, 46.76, 284.68°)
OKLab	oklab(43.05% -0.0262 -0.1301)
OKLCH	oklch(43.05% 0.133 258.6)
XYZ	xyz(8.6897, 7.7741, 30.3147)
Luminance	0.0777 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4D97 #97651B

analogous

#1B8B97 #1B4D97 #271B97

triadic

#1B4D97 #971B4D #4D971B

tetradic

#1B4D97 #971B8B #97651B #1B9727

square

#1B4D97 #971B8B #97651B #1B9727

split-complementary

#1B4D97 #97271B #8B971B

monochromatic

#08182F #123363 #1B4D97 #2467CB #4D88DF

Accessibility & contrast

On white

8.22

#1B4D97 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#1B4D97 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4D97

8.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4D97	#FFFFFF	#000000	##FFFFFF
##1B4D97	1.00	8.22	2.55	8.22
#FFFFFF	8.22	1.00	21.00	1.00
#000000	2.55	21.00	1.00	21.00
##FFFFFF	8.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#22559A

Deuteranopia (green-blind)

#004A96

Tritanopia (blue-blind)

#005F6A

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1b4d97;
/* rgb */ color: rgb(27, 77, 151);
/* oklch */ color: oklch(43.0% 0.133 258.6);

Tailwind

colors: {
  custom: {
    50: '#6d7eb6',
    500: '#1b4d97',
    950: '#000000',
  },
}

SCSS

$custom: #1b4d97;
$custom-light: #6d7eb6;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4d97",
  "rgb": {
    "r": 27,
    "g": 77,
    "b": 151
  },
  "hsl": {
    "h": 215.806,
    "s": 69.663,
    "l": 34.902
  },
  "oklch": {
    "l": 0.43046,
    "c": 0.13267,
    "h": 258.6
  },
  "luminance": 0.07775
}

Semantic roles & 50–950 ramp

primary

#1B4D97

secondary

#C1924C

accent

#A53BEC

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080911

muted

#7B7B80

Preview Lab

Preview with #1B4D97

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

Preview Lab → · Contrast checker → · Palette generator →