#1B4290#1B4290

#1B4290 is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.0% C 0.137 H 262.2°. Best body text is #FFFFFF at 9.42:1 contrast (WCAG AA passes).

Color values

HEX	#1B4290
RGB	rgb(27, 66, 144)
HSL	hsl(220, 68%, 34%)
HSV	hsv(220, 81%, 56%)
CMYK	cmyk(81.3%, 54.2%, 0%, 43.5%)
CIE-LAB	lab(29.77, 16.54, -47.01)
CIE-LCH	lch(29.77, 49.83, 289.38°)
OKLab	oklab(40.03% -0.0186 -0.1355)
OKLCH	oklch(40.03% 0.137 262.2)
XYZ	xyz(7.4324, 6.1422, 27.1740)
Luminance	0.0614 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4290 #90691B

analogous

#1B7C90 #1B4290 #2E1B90

triadic

#1B4290 #901B42 #42901B

tetradic

#1B4290 #901B7C #90691B #1B902E

square

#1B4290 #901B7C #90691B #1B902E

split-complementary

#1B4290 #902E1B #7C901B

monochromatic

#081329 #112A5C #1B4290 #255AC4 #497ADD

Accessibility & contrast

On white

9.42

#1B4290 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#1B4290 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4290

9.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4290	#FFFFFF	#000000	##FFFFFF
##1B4290	1.00	9.42	2.23	9.42
#FFFFFF	9.42	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#064C93

Deuteranopia (green-blind)

#00418E

Tritanopia (blue-blind)

#005562

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1b4290;
/* rgb */ color: rgb(27, 66, 144);
/* oklch */ color: oklch(40.0% 0.137 262.2);

Tailwind

colors: {
  custom: {
    50: '#6b75b1',
    500: '#1b4290',
    950: '#000000',
  },
}

SCSS

$custom: #1b4290;
$custom-light: #6b75b1;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4290",
  "rgb": {
    "r": 27,
    "g": 66,
    "b": 144
  },
  "hsl": {
    "h": 220,
    "s": 68.421,
    "l": 33.529
  },
  "oklch": {
    "l": 0.40025,
    "c": 0.13677,
    "h": 262.2
  },
  "luminance": 0.06143
}

Semantic roles & 50–950 ramp

primary

#1B4290

secondary

#BF9748

accent

#B13DEB

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1B4290

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

Preview Lab → · Contrast checker → · Palette generator →