#191B8F#191B8F

#191B8F is a dark, vivid blue. Relative luminance 0.030; OKLCH L 32.8% C 0.181 H 270.0°. Best body text is #FFFFFF at 13.17:1 contrast (WCAG AA passes).

Color values

HEX	#191B8F
RGB	rgb(25, 27, 143)
HSL	hsl(239, 70%, 33%)
HSV	hsv(239, 83%, 56%)
CMYK	cmyk(82.5%, 81.1%, 0%, 43.9%)
CIE-LAB	lab(19.94, 41.38, -62.52)
CIE-LCH	lch(19.94, 74.97, 303.50°)
OKLab	oklab(32.76% -0.0001 -0.1811)
OKLCH	oklch(32.76% 0.181 270)
XYZ	xyz(5.7491, 2.9730, 26.2521)
Luminance	0.0297 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#191B8F #8F8D19

analogous

#19568F #191B8F #52198F

triadic

#191B8F #8F191B #1B8F19

tetradic

#191B8F #8F1956 #8F8D19 #198F52

square

#191B8F #8F1956 #8F8D19 #198F52

split-complementary

#191B8F #8F5219 #568F19

monochromatic

#070727 #10115B #191B8F #2225C3 #4447DE

Accessibility & contrast

On white

13.17

#191B8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#191B8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #191B8F

13.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##191B8F	#FFFFFF	#000000	##FFFFFF
##191B8F	1.00	13.17	1.59	13.17
#FFFFFF	13.17	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003692

Deuteranopia (green-blind)

#002A8D

Tritanopia (blue-blind)

#003F55

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #191b8f;
/* rgb */ color: rgb(25, 27, 143);
/* oklch */ color: oklch(32.8% 0.181 270.0);

Tailwind

colors: {
  custom: {
    50: '#6e5ab1',
    500: '#191b8f',
    950: '#000000',
  },
}

SCSS

$custom: #191b8f;
$custom-light: #6e5ab1;
$custom-dark: #000000;

JSON

{
  "hex": "#191b8f",
  "rgb": {
    "r": 25,
    "g": 27,
    "b": 143
  },
  "hsl": {
    "h": 238.983,
    "s": 70.238,
    "l": 32.941
  },
  "oklch": {
    "l": 0.32761,
    "c": 0.18106,
    "h": 270
  },
  "luminance": 0.02974
}

Semantic roles & 50–950 ramp

primary

#191B8F

secondary

#BFBD44

accent

#EA3BED

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #191B8F

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

Preview Lab → · Contrast checker → · Palette generator →