#1D187F#1D187F

#1D187F is a dark, vivid blue. Relative luminance 0.024; OKLCH L 30.7% C 0.163 H 273.3°. Best body text is #FFFFFF at 14.10:1 contrast (WCAG AA passes).

Color values

HEX	#1D187F
RGB	rgb(29, 24, 127)
HSL	hsl(243, 68%, 30%)
HSV	hsv(243, 81%, 50%)
CMYK	cmyk(77.2%, 81.1%, 0%, 50.2%)
CIE-LAB	lab(17.67, 37.89, -56.20)
CIE-LCH	lch(17.67, 67.78, 303.99°)
OKLab	oklab(30.68% 0.0093 -0.1626)
OKLCH	oklch(30.68% 0.163 273.3)
XYZ	xyz(4.6628, 2.4463, 20.3010)
Luminance	0.0245 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D187F #7A7F18

analogous

#18467F #1D187F #51187F

triadic

#1D187F #7F1D18 #187F1D

tetradic

#1D187F #7F1846 #7A7F18 #187F51

square

#1D187F #7F1846 #7A7F18 #187F51

split-complementary

#1D187F #7F5118 #467F18

monochromatic

#06051A #110E4C #1D187F #2922B2 #4038D9

Accessibility & contrast

On white

14.10

#1D187F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.49

#1D187F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D187F

14.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D187F	#FFFFFF	#000000	##FFFFFF
##1D187F	1.00	14.10	1.49	14.10
#FFFFFF	14.10	1.00	21.00	1.00
#000000	1.49	21.00	1.00	21.00
##FFFFFF	14.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003082

Deuteranopia (green-blind)

#00267D

Tritanopia (blue-blind)

#00374B

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #1d187f;
/* rgb */ color: rgb(29, 24, 127);
/* oklch */ color: oklch(30.7% 0.163 273.3);

Tailwind

colors: {
  custom: {
    50: '#6b57a5',
    500: '#1d187f',
    950: '#000000',
  },
}

SCSS

$custom: #1d187f;
$custom-light: #6b57a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1d187f",
  "rgb": {
    "r": 29,
    "g": 24,
    "b": 127
  },
  "hsl": {
    "h": 242.913,
    "s": 68.212,
    "l": 29.608
  },
  "oklch": {
    "l": 0.30679,
    "c": 0.16286,
    "h": 273.3
  },
  "luminance": 0.02447
}

Semantic roles & 50–950 ramp

primary

#1D187F

secondary

#AEB33F

accent

#EB3DE3

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08030F

muted

#7B787F

Preview Lab

Preview with #1D187F

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

Preview Lab → · Contrast checker → · Palette generator →