#1D187C#1D187C

#1D187C is a dark, vivid blue. Relative luminance 0.024; OKLCH L 30.3% C 0.159 H 273.6°. Best body text is #FFFFFF at 14.25:1 contrast (WCAG AA passes).

Color values

HEX	#1D187C
RGB	rgb(29, 24, 124)
HSL	hsl(243, 68%, 29%)
HSV	hsv(243, 81%, 49%)
CMYK	cmyk(76.6%, 80.6%, 0%, 51.4%)
CIE-LAB	lab(17.32, 36.87, -54.88)
CIE-LCH	lch(17.32, 66.12, 303.90°)
OKLab	oklab(30.33% 0.01 -0.1588)
OKLCH	oklch(30.33% 0.159 273.6)
XYZ	xyz(4.4702, 2.3693, 19.2866)
Luminance	0.0237 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D187C #777C18

analogous

#18457C #1D187C #4F187C

triadic

#1D187C #7C1D18 #187C1D

tetradic

#1D187C #7C1845 #777C18 #187C4F

square

#1D187C #7C1845 #777C18 #187C4F

split-complementary

#1D187C #7C4F18 #457C18

monochromatic

#06051A #110E49 #1D187C #2922AF #3E36D8

Accessibility & contrast

On white

14.25

#1D187C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.47

#1D187C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D187C

14.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D187C	#FFFFFF	#000000	##FFFFFF
##1D187C	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)

#002F7F

Deuteranopia (green-blind)

#00267A

Tritanopia (blue-blind)

#00364A

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #1d187c;
/* rgb */ color: rgb(29, 24, 124);
/* oklch */ color: oklch(30.3% 0.159 273.6);

Tailwind

colors: {
  custom: {
    50: '#6b57a3',
    500: '#1d187c',
    950: '#000000',
  },
}

SCSS

$custom: #1d187c;
$custom-light: #6b57a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1d187c",
  "rgb": {
    "r": 29,
    "g": 24,
    "b": 124
  },
  "hsl": {
    "h": 243,
    "s": 67.568,
    "l": 29.02
  },
  "oklch": {
    "l": 0.30325,
    "c": 0.15908,
    "h": 273.6
  },
  "luminance": 0.0237
}

Semantic roles & 50–950 ramp

primary

#1D187C

secondary

#ABB13F

accent

#EA3DE2

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#08030F

muted

#7A787F

Preview Lab

Preview with #1D187C

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

Preview Lab → · Contrast checker → · Palette generator →