#1B187E#1B187E

#1B187E is a dark, vivid blue. Relative luminance 0.024; OKLCH L 30.4% C 0.162 H 272.4°. Best body text is #FFFFFF at 14.20:1 contrast (WCAG AA passes).

Color values

HEX	#1B187E
RGB	rgb(27, 24, 126)
HSL	hsl(242, 68%, 29%)
HSV	hsv(242, 81%, 49%)
CMYK	cmyk(78.6%, 81%, 0%, 50.6%)
CIE-LAB	lab(17.42, 37.39, -55.98)
CIE-LCH	lch(17.42, 67.32, 303.74°)
OKLab	oklab(30.43% 0.0069 -0.162)
OKLCH	oklch(30.43% 0.162 272.4)
XYZ	xyz(4.5433, 2.3922, 19.9569)
Luminance	0.0239 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B187E #7B7E18

analogous

#18487E #1B187E #4E187E

triadic

#1B187E #7E1B18 #187E1B

tetradic

#1B187E #7E1848 #7B7E18 #187E4E

square

#1B187E #7E1848 #7B7E18 #187E4E

split-complementary

#1B187E #7E4E18 #487E18

monochromatic

#06051A #100E4B #1B187E #2622B1 #3C37D9

Accessibility & contrast

On white

14.20

#1B187E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.48

#1B187E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B187E

14.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B187E	#FFFFFF	#000000	##FFFFFF
##1B187E	1.00	14.20	1.48	14.20
#FFFFFF	14.20	1.00	21.00	1.00
#000000	1.48	21.00	1.00	21.00
##FFFFFF	14.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003081

Deuteranopia (green-blind)

#00267C

Tritanopia (blue-blind)

#00374B

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #1b187e;
/* rgb */ color: rgb(27, 24, 126);
/* oklch */ color: oklch(30.4% 0.162 272.4);

Tailwind

colors: {
  custom: {
    50: '#6a57a5',
    500: '#1b187e',
    950: '#000000',
  },
}

SCSS

$custom: #1b187e;
$custom-light: #6a57a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1b187e",
  "rgb": {
    "r": 27,
    "g": 24,
    "b": 126
  },
  "hsl": {
    "h": 241.765,
    "s": 68,
    "l": 29.412
  },
  "oklch": {
    "l": 0.30434,
    "c": 0.16216,
    "h": 272.4
  },
  "luminance": 0.02393
}

Semantic roles & 50–950 ramp

primary

#1B187E

secondary

#AFB23F

accent

#EB3DE6

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#08030F

muted

#7A787F

Preview Lab

Preview with #1B187E

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

Preview Lab → · Contrast checker → · Palette generator →