#1B157F#1B157F

#1B157F is a dark, vivid blue. Relative luminance 0.023; OKLCH L 30.2% C 0.166 H 272.7°. Best body text is #FFFFFF at 14.38:1 contrast (WCAG AA passes).

Color values

HEX	#1B157F
RGB	rgb(27, 21, 127)
HSL	hsl(243, 72%, 29%)
HSV	hsv(243, 83%, 50%)
CMYK	cmyk(78.7%, 83.5%, 0%, 50.2%)
CIE-LAB	lab(16.99, 39.33, -57.33)
CIE-LCH	lch(16.99, 69.52, 304.45°)
OKLab	oklab(30.17% 0.0077 -0.1659)
OKLCH	oklch(30.17% 0.166 272.7)
XYZ	xyz(4.5496, 2.3012, 20.2789)
Luminance	0.0230 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B157F #797F15

analogous

#15447F #1B157F #50157F

triadic

#1B157F #7F1B15 #157F1B

tetradic

#1B157F #7F1544 #797F15 #157F50

square

#1B157F #7F1544 #797F15 #157F50

split-complementary

#1B157F #7F5015 #447F15

monochromatic

#06041A #100C4A #1B157F #261EB4 #3B31DD

Accessibility & contrast

On white

14.38

#1B157F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.46

#1B157F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B157F

14.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B157F	#FFFFFF	#000000	##FFFFFF
##1B157F	1.00	14.38	1.46	14.38
#FFFFFF	14.38	1.00	21.00	1.00
#000000	1.46	21.00	1.00	21.00
##FFFFFF	14.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F82

Deuteranopia (green-blind)

#00257D

Tritanopia (blue-blind)

#00364B

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #1b157f;
/* rgb */ color: rgb(27, 21, 127);
/* oklch */ color: oklch(30.2% 0.166 272.7);

Tailwind

colors: {
  custom: {
    50: '#6b56a5',
    500: '#1b157f',
    950: '#000000',
  },
}

SCSS

$custom: #1b157f;
$custom-light: #6b56a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1b157f",
  "rgb": {
    "r": 27,
    "g": 21,
    "b": 127
  },
  "hsl": {
    "h": 243.396,
    "s": 71.622,
    "l": 29.02
  },
  "oklch": {
    "l": 0.3017,
    "c": 0.16606,
    "h": 272.7
  },
  "luminance": 0.02302
}

Semantic roles & 50–950 ramp

primary

#1B157F

secondary

#ADB43C

accent

#EE39E4

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08030F

muted

#7B787F

Preview Lab

Preview with #1B157F

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

Preview Lab → · Contrast checker → · Palette generator →