#1B187D#1B187D

#1B187D is a dark, vivid blue. Relative luminance 0.024; OKLCH L 30.3% C 0.161 H 272.5°. Best body text is #FFFFFF at 14.25:1 contrast (WCAG AA passes).

Color values

HEX	#1B187D
RGB	rgb(27, 24, 125)
HSL	hsl(242, 68%, 29%)
HSV	hsv(242, 81%, 49%)
CMYK	cmyk(78.4%, 80.8%, 0%, 51%)
CIE-LAB	lab(17.30, 37.05, -55.54)
CIE-LCH	lch(17.30, 66.77, 303.71°)
OKLab	oklab(30.32% 0.0071 -0.1607)
OKLCH	oklch(30.32% 0.161 272.5)
XYZ	xyz(4.4791, 2.3665, 19.6188)
Luminance	0.0237 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B187D #7A7D18

analogous

#18487D #1B187D #4E187D

triadic

#1B187D #7D1B18 #187D1B

tetradic

#1B187D #7D1848 #7A7D18 #187D4E

square

#1B187D #7D1848 #7A7D18 #187D4E

split-complementary

#1B187D #7D4E18 #487D18

monochromatic

#06051A #100E4A #1B187D #2622B0 #3C37D9

Accessibility & contrast

On white

14.25

#1B187D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.47

#1B187D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B187D

14.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B187D	#FFFFFF	#000000	##FFFFFF
##1B187D	1.00	14.25	1.47	14.25
#FFFFFF	14.25	1.00	21.00	1.00
#000000	1.47	21.00	1.00	21.00
##FFFFFF	14.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F80

Deuteranopia (green-blind)

#00257B

Tritanopia (blue-blind)

#00374A

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #1b187d;
/* rgb */ color: rgb(27, 24, 125);
/* oklch */ color: oklch(30.3% 0.161 272.5);

Tailwind

colors: {
  custom: {
    50: '#6a57a4',
    500: '#1b187d',
    950: '#000000',
  },
}

SCSS

$custom: #1b187d;
$custom-light: #6a57a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1b187d",
  "rgb": {
    "r": 27,
    "g": 24,
    "b": 125
  },
  "hsl": {
    "h": 241.782,
    "s": 67.785,
    "l": 29.216
  },
  "oklch": {
    "l": 0.30315,
    "c": 0.1609,
    "h": 272.5
  },
  "luminance": 0.02367
}

Semantic roles & 50–950 ramp

primary

#1B187D

secondary

#AEB23F

accent

#EB3DE6

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#08030F

muted

#7A787F

Preview Lab

Preview with #1B187D

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

Preview Lab → · Contrast checker → · Palette generator →