#1B408C#1B408C

#1B408C is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.3% C 0.134 H 262.5°. Best body text is #FFFFFF at 9.73:1 contrast (WCAG AA passes).

Color values

HEX	#1B408C
RGB	rgb(27, 64, 140)
HSL	hsl(220, 68%, 33%)
HSV	hsv(220, 81%, 55%)
CMYK	cmyk(80.7%, 54.3%, 0%, 45.1%)
CIE-LAB	lab(28.88, 16.30, -45.98)
CIE-LCH	lch(28.88, 48.79, 289.51°)
OKLab	oklab(39.26% -0.0175 -0.1325)
OKLCH	oklch(39.26% 0.134 262.5)
XYZ	xyz(7.0173, 5.7924, 25.5541)
Luminance	0.0579 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B408C #8C671B

analogous

#1B788C #1B408C #2E1B8C

triadic

#1B408C #8C1B40 #408C1B

tetradic

#1B408C #8C1B78 #8C671B #1B8C2E

square

#1B408C #8C1B78 #8C671B #1B8C2E

split-complementary

#1B408C #8C2E1B #788C1B

monochromatic

#071125 #112959 #1B408C #2557BF #4677DB

Accessibility & contrast

On white

9.73

#1B408C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#1B408C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B408C

9.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B408C	#FFFFFF	#000000	##FFFFFF
##1B408C	1.00	9.73	2.16	9.73
#FFFFFF	9.73	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#064A8F

Deuteranopia (green-blind)

#003F8A

Tritanopia (blue-blind)

#00535F

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1b408c;
/* rgb */ color: rgb(27, 64, 140);
/* oklch */ color: oklch(39.3% 0.134 262.5);

Tailwind

colors: {
  custom: {
    50: '#6b74ae',
    500: '#1b408c',
    950: '#000000',
  },
}

SCSS

$custom: #1b408c;
$custom-light: #6b74ae;
$custom-dark: #000000;

JSON

{
  "hex": "#1b408c",
  "rgb": {
    "r": 27,
    "g": 64,
    "b": 140
  },
  "hsl": {
    "h": 220.354,
    "s": 67.665,
    "l": 32.745
  },
  "oklch": {
    "l": 0.39256,
    "c": 0.13367,
    "h": 262.5
  },
  "luminance": 0.05793
}

Semantic roles & 50–950 ramp

primary

#1B408C

secondary

#BD9646

accent

#B23DEB

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#080810

muted

#7A7B7F

Preview Lab

Preview with #1B408C

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

Preview Lab → · Contrast checker → · Palette generator →