#1B498B#1B498B

#1B498B is a dark, vivid blue. Relative luminance 0.069; OKLCH L 41.2% C 0.121 H 258.1°. Best body text is #FFFFFF at 8.85:1 contrast (WCAG AA passes).

Color values

HEX	#1B498B
RGB	rgb(27, 73, 139)
HSL	hsl(215, 67%, 33%)
HSV	hsv(215, 81%, 55%)
CMYK	cmyk(80.6%, 47.5%, 0%, 45.5%)
CIE-LAB	lab(31.49, 9.70, -41.16)
CIE-LCH	lch(31.49, 42.29, 283.26°)
OKLab	oklab(41.23% -0.025 -0.1181)
OKLCH	oklch(41.23% 0.121 258.1)
XYZ	xyz(7.4930, 6.8613, 25.3505)
Luminance	0.0686 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B498B #8B5D1B

analogous

#1B818B #1B498B #251B8B

triadic

#1B498B #8B1B49 #498B1B

tetradic

#1B498B #8B1B81 #8B5D1B #1B8B25

square

#1B498B #8B1B81 #8B5D1B #1B8B25

split-complementary

#1B498B #8B251B #818B1B

monochromatic

#071325 #112E58 #1B498B #2564BE #4583DB

Accessibility & contrast

On white

8.85

#1B498B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#1B498B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B498B

8.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B498B	#FFFFFF	#000000	##FFFFFF
##1B498B	1.00	8.85	2.37	8.85
#FFFFFF	8.85	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#25508D

Deuteranopia (green-blind)

#08458A

Tritanopia (blue-blind)

#005963

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #1b498b;
/* rgb */ color: rgb(27, 73, 139);
/* oklch */ color: oklch(41.2% 0.121 258.1);

Tailwind

colors: {
  custom: {
    50: '#6a7bad',
    500: '#1b498b',
    950: '#000000',
  },
}

SCSS

$custom: #1b498b;
$custom-light: #6a7bad;
$custom-dark: #000000;

JSON

{
  "hex": "#1b498b",
  "rgb": {
    "r": 27,
    "g": 73,
    "b": 139
  },
  "hsl": {
    "h": 215.357,
    "s": 67.47,
    "l": 32.549
  },
  "oklch": {
    "l": 0.41229,
    "c": 0.12076,
    "h": 258.1
  },
  "luminance": 0.06862
}

Semantic roles & 50–950 ramp

primary

#1B498B

secondary

#BC8C45

accent

#A33DEA

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#070910

muted

#7A7B7F

Preview Lab

Preview with #1B498B

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

Preview Lab → · Contrast checker → · Palette generator →