#1B186E#1B186E

#1B186E is a dark, vivid blue. Relative luminance 0.020; OKLCH L 28.6% C 0.141 H 274.3°. Best body text is #FFFFFF at 14.97:1 contrast (WCAG AA passes).

Color values

HEX	#1B186E
RGB	rgb(27, 24, 110)
HSL	hsl(242, 64%, 26%)
HSV	hsv(242, 78%, 43%)
CMYK	cmyk(75.5%, 78.2%, 0%, 56.9%)
CIE-LAB	lab(15.55, 31.81, -48.78)
CIE-LCH	lch(15.55, 58.23, 303.11°)
OKLab	oklab(28.56% 0.0105 -0.1411)
OKLCH	oklch(28.56% 0.141 274.3)
XYZ	xyz(3.5922, 2.0117, 14.9478)
Luminance	0.0201 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B186E #6B6E18

analogous

#18406E #1B186E #46186E

triadic

#1B186E #6E1B18 #186E1B

tetradic

#1B186E #6E1840 #6B6E18 #186E46

square

#1B186E #6E1840 #6B6E18 #186E46

split-complementary

#1B186E #6E4618 #406E18

monochromatic

#060519 #0F0D3C #1B186E #2723A0 #352FD2

Accessibility & contrast

On white

14.97

#1B186E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.40

#1B186E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B186E

14.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B186E	#FFFFFF	#000000	##FFFFFF
##1B186E	1.00	14.97	1.40	14.97
#FFFFFF	14.97	1.00	21.00	1.00
#000000	1.40	21.00	1.00	21.00
##FFFFFF	14.97	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: #1b186e;
/* rgb */ color: rgb(27, 24, 110);
/* oklch */ color: oklch(28.6% 0.141 274.3);

Tailwind

colors: {
  custom: {
    50: '#665699',
    500: '#1b186e',
    950: '#000000',
  },
}

SCSS

$custom: #1b186e;
$custom-light: #665699;
$custom-dark: #000000;

JSON

{
  "hex": "#1b186e",
  "rgb": {
    "r": 27,
    "g": 24,
    "b": 110
  },
  "hsl": {
    "h": 242.093,
    "s": 64.179,
    "l": 26.275
  },
  "oklch": {
    "l": 0.28561,
    "c": 0.14148,
    "h": 274.3
  },
  "luminance": 0.02012
}

Semantic roles & 50–950 ramp

primary

#1B186E

secondary

#A0A43E

accent

#E741E1

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #1B186E

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

Preview Lab → · Contrast checker → · Palette generator →