#1C187F#1C187F

#1C187F is a dark, vivid blue. Relative luminance 0.024; OKLCH L 30.6% C 0.163 H 272.8°. Best body text is #FFFFFF at 14.13:1 contrast (WCAG AA passes).

Color values

HEX	#1C187F
RGB	rgb(28, 24, 127)
HSL	hsl(242, 68%, 30%)
HSV	hsv(242, 81%, 50%)
CMYK	cmyk(78%, 81.1%, 0%, 50.2%)
CIE-LAB	lab(17.61, 37.81, -56.31)
CIE-LCH	lch(17.61, 67.83, 303.88°)
OKLab	oklab(30.62% 0.008 -0.163)
OKLCH	oklch(30.62% 0.163 272.8)
XYZ	xyz(4.6350, 2.4320, 20.2997)
Luminance	0.0243 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C187F #7B7F18

analogous

#18487F #1C187F #50187F

triadic

#1C187F #7F1C18 #187F1C

tetradic

#1C187F #7F1848 #7B7F18 #187F50

square

#1C187F #7F1848 #7B7F18 #187F50

split-complementary

#1C187F #7F5018 #487F18

monochromatic

#06051A #110E4C #1C187F #2722B2 #3E38D9

Accessibility & contrast

On white

14.13

#1C187F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.49

#1C187F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C187F

14.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C187F	#FFFFFF	#000000	##FFFFFF
##1C187F	1.00	14.13	1.49	14.13
#FFFFFF	14.13	1.00	21.00	1.00
#000000	1.49	21.00	1.00	21.00
##FFFFFF	14.13	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: #1c187f;
/* rgb */ color: rgb(28, 24, 127);
/* oklch */ color: oklch(30.6% 0.163 272.8);

Tailwind

colors: {
  custom: {
    50: '#6b57a5',
    500: '#1c187f',
    950: '#000000',
  },
}

SCSS

$custom: #1c187f;
$custom-light: #6b57a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1c187f",
  "rgb": {
    "r": 28,
    "g": 24,
    "b": 127
  },
  "hsl": {
    "h": 242.33,
    "s": 68.212,
    "l": 29.608
  },
  "oklch": {
    "l": 0.30616,
    "c": 0.16314,
    "h": 272.8
  },
  "luminance": 0.02432
}

Semantic roles & 50–950 ramp

primary

#1C187F

secondary

#AFB33F

accent

#EB3DE4

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08030F

muted

#7B787F

Preview Lab

Preview with #1C187F

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

Preview Lab → · Contrast checker → · Palette generator →