#1B1675#1B1675

#1B1675 is a dark, vivid blue. Relative luminance 0.021; OKLCH L 29.1% C 0.153 H 273.7°. Best body text is #FFFFFF at 14.81:1 contrast (WCAG AA passes).

Color values

HEX	#1B1675
RGB	rgb(27, 22, 117)
HSL	hsl(243, 68%, 27%)
HSV	hsv(243, 81%, 46%)
CMYK	cmyk(76.9%, 81.2%, 0%, 54.1%)
CIE-LAB	lab(15.96, 35.43, -52.64)
CIE-LCH	lch(15.96, 63.45, 303.94°)
OKLab	oklab(29.09% 0.0099 -0.1523)
OKLCH	oklch(29.09% 0.153 273.7)
XYZ	xyz(3.9487, 2.0908, 17.0216)
Luminance	0.0209 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1675 #707516

analogous

#164175 #1B1675 #4B1675

triadic

#1B1675 #751B16 #16751B

tetradic

#1B1675 #751641 #707516 #16754B

square

#1B1675 #751641 #707516 #16754B

split-complementary

#1B1675 #754B16 #417516

monochromatic

#06051A #0F0C41 #1B1675 #2720A9 #372ED8

Accessibility & contrast

On white

14.81

#1B1675 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.42

#1B1675 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1675

14.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1675	#FFFFFF	#000000	##FFFFFF
##1B1675	1.00	14.81	1.42	14.81
#FFFFFF	14.81	1.00	21.00	1.00
#000000	1.42	21.00	1.00	21.00
##FFFFFF	14.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002C78

Deuteranopia (green-blind)

#002373

Tritanopia (blue-blind)

#003345

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #1b1675;
/* rgb */ color: rgb(27, 22, 117);
/* oklch */ color: oklch(29.1% 0.153 273.7);

Tailwind

colors: {
  custom: {
    50: '#68559e',
    500: '#1b1675',
    950: '#000000',
  },
}

SCSS

$custom: #1b1675;
$custom-light: #68559e;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1675",
  "rgb": {
    "r": 27,
    "g": 22,
    "b": 117
  },
  "hsl": {
    "h": 243.158,
    "s": 68.345,
    "l": 27.255
  },
  "oklch": {
    "l": 0.2909,
    "c": 0.15262,
    "h": 273.7
  },
  "luminance": 0.02091
}

Semantic roles & 50–950 ramp

primary

#1B1675

secondary

#A5AB3C

accent

#EB3DE2

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #1B1675

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

Preview Lab → · Contrast checker → · Palette generator →