#191B8E#191B8E

#191B8E is a dark, vivid blue. Relative luminance 0.029; OKLCH L 32.6% C 0.180 H 270.0°. Best body text is #FFFFFF at 13.22:1 contrast (WCAG AA passes).

Color values

HEX	#191B8E
RGB	rgb(25, 27, 142)
HSL	hsl(239, 70%, 33%)
HSV	hsv(239, 82%, 56%)
CMYK	cmyk(82.4%, 81%, 0%, 44.3%)
CIE-LAB	lab(19.81, 41.04, -62.10)
CIE-LCH	lch(19.81, 74.44, 303.46°)
OKLab	oklab(32.64% 0.0001 -0.1798)
OKLCH	oklch(32.64% 0.18 270)
XYZ	xyz(5.6737, 2.9429, 25.8549)
Luminance	0.0294 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#191B8E #8E8C19

analogous

#19568E #191B8E #51198E

triadic

#191B8E #8E191B #1B8E19

tetradic

#191B8E #8E1956 #8E8C19 #198E51

square

#191B8E #8E1956 #8E8C19 #198E51

split-complementary

#191B8E #8E5119 #568E19

monochromatic

#070726 #10115A #191B8E #2225C2 #4346DE

Accessibility & contrast

On white

13.22

#191B8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#191B8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #191B8E

13.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##191B8E	#FFFFFF	#000000	##FFFFFF
##191B8E	1.00	13.22	1.59	13.22
#FFFFFF	13.22	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003691

Deuteranopia (green-blind)

#002A8C

Tritanopia (blue-blind)

#003F55

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #191b8e;
/* rgb */ color: rgb(25, 27, 142);
/* oklch */ color: oklch(32.6% 0.180 270.0);

Tailwind

colors: {
  custom: {
    50: '#6e5ab0',
    500: '#191b8e',
    950: '#000000',
  },
}

SCSS

$custom: #191b8e;
$custom-light: #6e5ab0;
$custom-dark: #000000;

JSON

{
  "hex": "#191b8e",
  "rgb": {
    "r": 25,
    "g": 27,
    "b": 142
  },
  "hsl": {
    "h": 238.974,
    "s": 70.06,
    "l": 32.745
  },
  "oklch": {
    "l": 0.32641,
    "c": 0.17984,
    "h": 270
  },
  "luminance": 0.02944
}

Semantic roles & 50–950 ramp

primary

#191B8E

secondary

#BFBD44

accent

#EA3BED

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #191B8E

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

Preview Lab → · Contrast checker → · Palette generator →