#1B488A#1B488A

#1B488A is a dark, vivid blue. Relative luminance 0.067; OKLCH L 40.9% C 0.121 H 258.4°. Best body text is #FFFFFF at 8.97:1 contrast (WCAG AA passes).

Color values

HEX	#1B488A
RGB	rgb(27, 72, 138)
HSL	hsl(216, 67%, 32%)
HSV	hsv(216, 80%, 54%)
CMYK	cmyk(80.4%, 47.8%, 0%, 45.9%)
CIE-LAB	lab(31.12, 9.97, -41.14)
CIE-LCH	lch(31.12, 42.33, 283.63°)
OKLab	oklab(40.92% -0.0243 -0.1181)
OKLCH	oklch(40.92% 0.121 258.4)
XYZ	xyz(7.3551, 6.7019, 24.9458)
Luminance	0.0670 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B488A #8A5D1B

analogous

#1B7F8A #1B488A #261B8A

triadic

#1B488A #8A1B48 #488A1B

tetradic

#1B488A #8A1B7F #8A5D1B #1B8A26

square

#1B488A #8A1B7F #8A5D1B #1B8A26

split-complementary

#1B488A #8A261B #7F8A1B

monochromatic

#071324 #112D57 #1B488A #2563BD #4582DB

Accessibility & contrast

On white

8.97

#1B488A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.34

#1B488A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B488A

8.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B488A	#FFFFFF	#000000	##FFFFFF
##1B488A	1.00	8.97	2.34	8.97
#FFFFFF	8.97	1.00	21.00	1.00
#000000	2.34	21.00	1.00	21.00
##FFFFFF	8.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#244F8C

Deuteranopia (green-blind)

#064589

Tritanopia (blue-blind)

#005862

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1b488a;
/* rgb */ color: rgb(27, 72, 138);
/* oklch */ color: oklch(40.9% 0.121 258.4);

Tailwind

colors: {
  custom: {
    50: '#6a7aad',
    500: '#1b488a',
    950: '#000000',
  },
}

SCSS

$custom: #1b488a;
$custom-light: #6a7aad;
$custom-dark: #000000;

JSON

{
  "hex": "#1b488a",
  "rgb": {
    "r": 27,
    "g": 72,
    "b": 138
  },
  "hsl": {
    "h": 215.676,
    "s": 67.273,
    "l": 32.353
  },
  "oklch": {
    "l": 0.40921,
    "c": 0.12059,
    "h": 258.4
  },
  "luminance": 0.06703
}

Semantic roles & 50–950 ramp

primary

#1B488A

secondary

#BC8C45

accent

#A43EEA

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#070910

muted

#7A7B7F

Preview Lab

Preview with #1B488A

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

Preview Lab → · Contrast checker → · Palette generator →