#1B157B#1B157B

#1B157B is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.7% C 0.161 H 273.1°. Best body text is #FFFFFF at 14.59:1 contrast (WCAG AA passes).

Color values

HEX	#1B157B
RGB	rgb(27, 21, 123)
HSL	hsl(244, 71%, 28%)
HSV	hsv(244, 83%, 48%)
CMYK	cmyk(78%, 82.9%, 0%, 51.8%)
CIE-LAB	lab(16.50, 38.00, -55.60)
CIE-LCH	lch(16.50, 67.34, 304.35°)
OKLab	oklab(29.68% 0.0088 -0.1609)
OKLCH	oklch(29.68% 0.161 273.1)
XYZ	xyz(4.2941, 2.1990, 18.9332)
Luminance	0.0220 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B157B #757B15

analogous

#15427B #1B157B #4E157B

triadic

#1B157B #7B1B15 #157B1B

tetradic

#1B157B #7B1542 #757B15 #157B4E

square

#1B157B #7B1542 #757B15 #157B4E

split-complementary

#1B157B #7B4E15 #427B15

monochromatic

#06041A #100C47 #1B157B #261EAF #392FDB

Accessibility & contrast

On white

14.59

#1B157B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.44

#1B157B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B157B

14.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B157B	#FFFFFF	#000000	##FFFFFF
##1B157B	1.00	14.59	1.44	14.59
#FFFFFF	14.59	1.00	21.00	1.00
#000000	1.44	21.00	1.00	21.00
##FFFFFF	14.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E7E

Deuteranopia (green-blind)

#002479

Tritanopia (blue-blind)

#003548

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #1b157b;
/* rgb */ color: rgb(27, 21, 123);
/* oklch */ color: oklch(29.7% 0.161 273.1);

Tailwind

colors: {
  custom: {
    50: '#6a55a2',
    500: '#1b157b',
    950: '#000000',
  },
}

SCSS

$custom: #1b157b;
$custom-light: #6a55a2;
$custom-dark: #000000;

JSON

{
  "hex": "#1b157b",
  "rgb": {
    "r": 27,
    "g": 21,
    "b": 123
  },
  "hsl": {
    "h": 243.529,
    "s": 70.833,
    "l": 28.235
  },
  "oklch": {
    "l": 0.29682,
    "c": 0.1611,
    "h": 273.1
  },
  "luminance": 0.02199
}

Semantic roles & 50–950 ramp

primary

#1B157B

secondary

#A9B03B

accent

#EE3AE3

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#08030F

muted

#7A787F

Preview Lab

Preview with #1B157B

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

Preview Lab → · Contrast checker → · Palette generator →