#1B408B#1B408B

#1B408B is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.2% C 0.132 H 262.3°. Best body text is #FFFFFF at 9.75:1 contrast (WCAG AA passes).

Color values

HEX	#1B408B
RGB	rgb(27, 64, 139)
HSL	hsl(220, 67%, 33%)
HSV	hsv(220, 81%, 55%)
CMYK	cmyk(80.6%, 54%, 0%, 45.5%)
CIE-LAB	lab(28.81, 15.89, -45.49)
CIE-LCH	lch(28.81, 48.18, 289.25°)
OKLab	oklab(39.17% -0.0176 -0.1311)
OKLCH	oklch(39.17% 0.132 262.3)
XYZ	xyz(6.9439, 5.7631, 25.1675)
Luminance	0.0576 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B408B #8B661B

analogous

#1B788B #1B408B #2E1B8B

triadic

#1B408B #8B1B40 #408B1B

tetradic

#1B408B #8B1B78 #8B661B #1B8B2E

square

#1B408B #8B1B78 #8B661B #1B8B2E

split-complementary

#1B408B #8B2E1B #788B1B

monochromatic

#071125 #112858 #1B408B #2558BE #4577DB

Accessibility & contrast

On white

9.75

#1B408B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#1B408B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B408B

9.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B408B	#FFFFFF	#000000	##FFFFFF
##1B408B	1.00	9.75	2.15	9.75
#FFFFFF	9.75	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#09498E

Deuteranopia (green-blind)

#003F8A

Tritanopia (blue-blind)

#00525F

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1b408b;
/* rgb */ color: rgb(27, 64, 139);
/* oklch */ color: oklch(39.2% 0.132 262.3);

Tailwind

colors: {
  custom: {
    50: '#6a74ad',
    500: '#1b408b',
    950: '#000000',
  },
}

SCSS

$custom: #1b408b;
$custom-light: #6a74ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1b408b",
  "rgb": {
    "r": 27,
    "g": 64,
    "b": 139
  },
  "hsl": {
    "h": 220.179,
    "s": 67.47,
    "l": 32.549
  },
  "oklch": {
    "l": 0.39174,
    "c": 0.13225,
    "h": 262.3
  },
  "luminance": 0.05764
}

Semantic roles & 50–950 ramp

primary

#1B408B

secondary

#BC9545

accent

#B13DEA

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#080810

muted

#7A7B7F

Preview Lab

Preview with #1B408B

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

Preview Lab → · Contrast checker → · Palette generator →