#1D186E#1D186E

#1D186E is a dark, vivid blue. Relative luminance 0.020; OKLCH L 28.7% C 0.141 H 275.4°. Best body text is #FFFFFF at 14.91:1 contrast (WCAG AA passes).

Color values

HEX	#1D186E
RGB	rgb(29, 24, 110)
HSL	hsl(243, 64%, 26%)
HSV	hsv(243, 78%, 43%)
CMYK	cmyk(73.6%, 78.2%, 0%, 56.9%)
CIE-LAB	lab(15.70, 32.02, -48.53)
CIE-LCH	lch(15.70, 58.15, 303.42°)
OKLab	oklab(28.7% 0.0132 -0.1403)
OKLCH	oklch(28.7% 0.141 275.4)
XYZ	xyz(3.6469, 2.0399, 14.9504)
Luminance	0.0204 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D186E #696E18

analogous

#183E6E #1D186E #48186E

triadic

#1D186E #6E1D18 #186E1D

tetradic

#1D186E #6E183E #696E18 #186E48

square

#1D186E #6E183E #696E18 #186E48

split-complementary

#1D186E #6E4818 #3E6E18

monochromatic

#070519 #100D3C #1D186E #2A23A0 #382FD2

Accessibility & contrast

On white

14.91

#1D186E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.41

#1D186E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D186E

14.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D186E	#FFFFFF	#000000	##FFFFFF
##1D186E	1.00	14.91	1.41	14.91
#FFFFFF	14.91	1.00	21.00	1.00
#000000	1.41	21.00	1.00	21.00
##FFFFFF	14.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002B70

Deuteranopia (green-blind)

#00236C

Tritanopia (blue-blind)

#003142

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #1d186e;
/* rgb */ color: rgb(29, 24, 110);
/* oklch */ color: oklch(28.7% 0.141 275.4);

Tailwind

colors: {
  custom: {
    50: '#675699',
    500: '#1d186e',
    950: '#000000',
  },
}

SCSS

$custom: #1d186e;
$custom-light: #675699;
$custom-dark: #000000;

JSON

{
  "hex": "#1d186e",
  "rgb": {
    "r": 29,
    "g": 24,
    "b": 110
  },
  "hsl": {
    "h": 243.488,
    "s": 64.179,
    "l": 26.275
  },
  "oklch": {
    "l": 0.28703,
    "c": 0.14093,
    "h": 275.4
  },
  "luminance": 0.0204
}

Semantic roles & 50–950 ramp

primary

#1D186E

secondary

#9EA43E

accent

#E741DD

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #1D186E

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

Preview Lab → · Contrast checker → · Palette generator →