#1B4A97#1B4A97

#1B4A97 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 42.4% C 0.136 H 259.9°. Best body text is #FFFFFF at 8.49:1 contrast (WCAG AA passes).

Color values

HEX	#1B4A97
RGB	rgb(27, 74, 151)
HSL	hsl(217, 70%, 35%)
HSV	hsv(217, 82%, 59%)
CMYK	cmyk(82.1%, 51%, 0%, 40.8%)
CIE-LAB	lab(32.62, 13.89, -46.67)
CIE-LCH	lch(32.62, 48.69, 286.57°)
OKLab	oklab(42.37% -0.0238 -0.1343)
OKLCH	oklch(42.37% 0.136 259.9)
XYZ	xyz(8.4847, 7.3639, 30.2464)
Luminance	0.0736 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4A97 #97681B

analogous

#1B8897 #1B4A97 #2A1B97

triadic

#1B4A97 #971B4A #4A971B

tetradic

#1B4A97 #971B88 #97681B #1B972A

square

#1B4A97 #971B88 #97681B #1B972A

split-complementary

#1B4A97 #972A1B #88971B

monochromatic

#08172F #123163 #1B4A97 #2463CB #4D85DF

Accessibility & contrast

On white

8.49

#1B4A97 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#1B4A97 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4A97

8.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4A97	#FFFFFF	#000000	##FFFFFF
##1B4A97	1.00	8.49	2.47	8.49
#FFFFFF	8.49	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A539A

Deuteranopia (green-blind)

#004795

Tritanopia (blue-blind)

#005D69

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #1b4a97;
/* rgb */ color: rgb(27, 74, 151);
/* oklch */ color: oklch(42.4% 0.136 259.9);

Tailwind

colors: {
  custom: {
    50: '#6d7bb6',
    500: '#1b4a97',
    950: '#000000',
  },
}

SCSS

$custom: #1b4a97;
$custom-light: #6d7bb6;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4a97",
  "rgb": {
    "r": 27,
    "g": 74,
    "b": 151
  },
  "hsl": {
    "h": 217.258,
    "s": 69.663,
    "l": 34.902
  },
  "oklch": {
    "l": 0.42366,
    "c": 0.13643,
    "h": 259.9
  },
  "luminance": 0.07365
}

Semantic roles & 50–950 ramp

primary

#1B4A97

secondary

#C1954C

accent

#A93BEC

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080911

muted

#7B7B80

Preview Lab

Preview with #1B4A97

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

Preview Lab → · Contrast checker → · Palette generator →