#1B157D#1B157D

#1B157D is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.9% C 0.164 H 272.9°. Best body text is #FFFFFF at 14.48:1 contrast (WCAG AA passes).

Color values

HEX	#1B157D
RGB	rgb(27, 21, 125)
HSL	hsl(243, 71%, 29%)
HSV	hsv(243, 83%, 49%)
CMYK	cmyk(78.4%, 83.2%, 0%, 51%)
CIE-LAB	lab(16.75, 38.67, -56.47)
CIE-LCH	lch(16.75, 68.44, 304.40°)
OKLab	oklab(29.93% 0.0082 -0.1634)
OKLCH	oklch(29.93% 0.164 272.9)
XYZ	xyz(4.4206, 2.2495, 19.5993)
Luminance	0.0225 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B157D #777D15

analogous

#15437D #1B157D #4F157D

triadic

#1B157D #7D1B15 #157D1B

tetradic

#1B157D #7D1543 #777D15 #157D4F

square

#1B157D #7D1543 #777D15 #157D4F

split-complementary

#1B157D #7D4F15 #437D15

monochromatic

#06041A #100C49 #1B157D #261EB1 #3A30DC

Accessibility & contrast

On white

14.48

#1B157D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.45

#1B157D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B157D

14.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B157D	#FFFFFF	#000000	##FFFFFF
##1B157D	1.00	14.48	1.45	14.48
#FFFFFF	14.48	1.00	21.00	1.00
#000000	1.45	21.00	1.00	21.00
##FFFFFF	14.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E80

Deuteranopia (green-blind)

#00247B

Tritanopia (blue-blind)

#00364A

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #1b157d;
/* rgb */ color: rgb(27, 21, 125);
/* oklch */ color: oklch(29.9% 0.164 272.9);

Tailwind

colors: {
  custom: {
    50: '#6a55a4',
    500: '#1b157d',
    950: '#000000',
  },
}

SCSS

$custom: #1b157d;
$custom-light: #6a55a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1b157d",
  "rgb": {
    "r": 27,
    "g": 21,
    "b": 125
  },
  "hsl": {
    "h": 243.462,
    "s": 71.233,
    "l": 28.627
  },
  "oklch": {
    "l": 0.29926,
    "c": 0.16359,
    "h": 272.9
  },
  "luminance": 0.0225
}

Semantic roles & 50–950 ramp

primary

#1B157D

secondary

#ABB23C

accent

#EE3AE4

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#08030F

muted

#7A787F

Preview Lab

Preview with #1B157D

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

Preview Lab → · Contrast checker → · Palette generator →