#1B187F#1B187F

#1B187F is a dark, vivid blue. Relative luminance 0.024; OKLCH L 30.6% C 0.163 H 272.3°. Best body text is #FFFFFF at 14.15:1 contrast (WCAG AA passes).

Color values

HEX	#1B187F
RGB	rgb(27, 24, 127)
HSL	hsl(242, 68%, 30%)
HSV	hsv(242, 81%, 50%)
CMYK	cmyk(78.7%, 81.1%, 0%, 50.2%)
CIE-LAB	lab(17.54, 37.73, -56.42)
CIE-LCH	lch(17.54, 67.87, 303.77°)
OKLab	oklab(30.55% 0.0067 -0.1633)
OKLCH	oklch(30.55% 0.163 272.3)
XYZ	xyz(4.6081, 2.4181, 20.2984)
Luminance	0.0242 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B187F #7C7F18

analogous

#18487F #1B187F #4F187F

triadic

#1B187F #7F1B18 #187F1B

tetradic

#1B187F #7F1848 #7C7F18 #187F4F

square

#1B187F #7F1848 #7C7F18 #187F4F

split-complementary

#1B187F #7F4F18 #487F18

monochromatic

#05051A #100E4C #1B187F #2622B2 #3D38D9

Accessibility & contrast

On white

14.15

#1B187F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.48

#1B187F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B187F

14.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B187F	#FFFFFF	#000000	##FFFFFF
##1B187F	1.00	14.15	1.48	14.15
#FFFFFF	14.15	1.00	21.00	1.00
#000000	1.48	21.00	1.00	21.00
##FFFFFF	14.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003082

Deuteranopia (green-blind)

#00267D

Tritanopia (blue-blind)

#00384B

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #1b187f;
/* rgb */ color: rgb(27, 24, 127);
/* oklch */ color: oklch(30.6% 0.163 272.3);

Tailwind

colors: {
  custom: {
    50: '#6b57a5',
    500: '#1b187f',
    950: '#000000',
  },
}

SCSS

$custom: #1b187f;
$custom-light: #6b57a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1b187f",
  "rgb": {
    "r": 27,
    "g": 24,
    "b": 127
  },
  "hsl": {
    "h": 241.748,
    "s": 68.212,
    "l": 29.608
  },
  "oklch": {
    "l": 0.30554,
    "c": 0.16342,
    "h": 272.3
  },
  "luminance": 0.02419
}

Semantic roles & 50–950 ramp

primary

#1B187F

secondary

#B0B33F

accent

#EB3DE6

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08030F

muted

#7B787F

Preview Lab

Preview with #1B187F

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

Preview Lab → · Contrast checker → · Palette generator →