#1B408F#1B408F

#1B408F is a dark, vivid blue. Relative luminance 0.059; OKLCH L 39.5% C 0.138 H 262.8°. Best body text is #FFFFFF at 9.65:1 contrast (WCAG AA passes).

Color values

HEX	#1B408F
RGB	rgb(27, 64, 143)
HSL	hsl(221, 68%, 33%)
HSV	hsv(221, 81%, 56%)
CMYK	cmyk(81.1%, 55.2%, 0%, 43.9%)
CIE-LAB	lab(29.11, 17.51, -47.46)
CIE-LCH	lch(29.11, 50.59, 290.26°)
OKLab	oklab(39.5% -0.0172 -0.1369)
OKLCH	oklch(39.5% 0.138 262.8)
XYZ	xyz(7.2415, 5.8821, 26.7350)
Luminance	0.0588 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B408F #8F6A1B

analogous

#1B7A8F #1B408F #301B8F

triadic

#1B408F #8F1B40 #408F1B

tetradic

#1B408F #8F1B7A #8F6A1B #1B8F30

square

#1B408F #8F1B7A #8F6A1B #1B8F30

split-complementary

#1B408F #8F301B #7A8F1B

monochromatic

#081228 #11295C #1B408F #2557C2 #4877DC

Accessibility & contrast

On white

9.65

#1B408F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.18

#1B408F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B408F

9.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B408F	#FFFFFF	#000000	##FFFFFF
##1B408F	1.00	9.65	2.18	9.65
#FFFFFF	9.65	1.00	21.00	1.00
#000000	2.18	21.00	1.00	21.00
##FFFFFF	9.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A92

Deuteranopia (green-blind)

#00408D

Tritanopia (blue-blind)

#005361

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #1b408f;
/* rgb */ color: rgb(27, 64, 143);
/* oklch */ color: oklch(39.5% 0.138 262.8);

Tailwind

colors: {
  custom: {
    50: '#6b74b0',
    500: '#1b408f',
    950: '#000000',
  },
}

SCSS

$custom: #1b408f;
$custom-light: #6b74b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1b408f",
  "rgb": {
    "r": 27,
    "g": 64,
    "b": 143
  },
  "hsl": {
    "h": 220.862,
    "s": 68.235,
    "l": 33.333
  },
  "oklch": {
    "l": 0.39504,
    "c": 0.13794,
    "h": 262.8
  },
  "luminance": 0.05883
}

Semantic roles & 50–950 ramp

primary

#1B408F

secondary

#BE9848

accent

#B33DEB

background

#F7F7FA

surface

#EDEDF5

border

#C8C8CF

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1B408F

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

Preview Lab → · Contrast checker → · Palette generator →