#1B157C#1B157C

#1B157C is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.8% C 0.162 H 273.0°. Best body text is #FFFFFF at 14.53:1 contrast (WCAG AA passes).

Color values

HEX	#1B157C
RGB	rgb(27, 21, 124)
HSL	hsl(243, 71%, 28%)
HSV	hsv(243, 83%, 49%)
CMYK	cmyk(78.2%, 83.1%, 0%, 51.4%)
CIE-LAB	lab(16.62, 38.33, -56.03)
CIE-LCH	lch(16.62, 67.89, 304.38°)
OKLab	oklab(29.8% 0.0085 -0.1621)
OKLCH	oklch(29.8% 0.162 273)
XYZ	xyz(4.3570, 2.2241, 19.2645)
Luminance	0.0222 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B157C #767C15

analogous

#15427C #1B157C #4E157C

triadic

#1B157C #7C1B15 #157C1B

tetradic

#1B157C #7C1542 #767C15 #157C4E

square

#1B157C #7C1542 #767C15 #157C4E

split-complementary

#1B157C #7C4E15 #427C15

monochromatic

#06041A #100C48 #1B157C #261EB0 #3A30DC

Accessibility & contrast

On white

14.53

#1B157C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.45

#1B157C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B157C

14.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B157C	#FFFFFF	#000000	##FFFFFF
##1B157C	1.00	14.53	1.45	14.53
#FFFFFF	14.53	1.00	21.00	1.00
#000000	1.45	21.00	1.00	21.00
##FFFFFF	14.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E7F

Deuteranopia (green-blind)

#00247A

Tritanopia (blue-blind)

#003549

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #1b157c;
/* rgb */ color: rgb(27, 21, 124);
/* oklch */ color: oklch(29.8% 0.162 273.0);

Tailwind

colors: {
  custom: {
    50: '#6a55a3',
    500: '#1b157c',
    950: '#000000',
  },
}

SCSS

$custom: #1b157c;
$custom-light: #6a55a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1b157c",
  "rgb": {
    "r": 27,
    "g": 21,
    "b": 124
  },
  "hsl": {
    "h": 243.495,
    "s": 71.034,
    "l": 28.431
  },
  "oklch": {
    "l": 0.29804,
    "c": 0.16234,
    "h": 273
  },
  "luminance": 0.02225
}

Semantic roles & 50–950 ramp

primary

#1B157C

secondary

#AAB13C

accent

#EE3AE3

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#08030F

muted

#7A787F

Preview Lab

Preview with #1B157C

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

Preview Lab → · Contrast checker → · Palette generator →