#191B63#191B63

#191B63 is a dark, vivid blue. Relative luminance 0.019; OKLCH L 27.7% C 0.123 H 273.7°. Best body text is #FFFFFF at 15.24:1 contrast (WCAG AA passes).

Color values

HEX	#191B63
RGB	rgb(25, 27, 99)
HSL	hsl(238, 60%, 24%)
HSV	hsv(238, 75%, 39%)
CMYK	cmyk(74.7%, 72.7%, 0%, 61.2%)
CIE-LAB	lab(14.91, 25.58, -42.62)
CIE-LCH	lch(14.91, 49.71, 300.97°)
OKLab	oklab(27.7% 0.0079 -0.1232)
OKLCH	oklch(27.7% 0.123 273.7)
XYZ	xyz(3.0442, 1.8911, 12.0065)
Luminance	0.0189 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#191B63 #636119

analogous

#194063 #191B63 #3C1963

triadic

#191B63 #63191B #1B6319

tetradic

#191B63 #631940 #636119 #19633C

square

#191B63 #631940 #636119 #19633C

split-complementary

#191B63 #633C19 #406319

monochromatic

#060718 #0D0E32 #191B63 #252894 #3236C5

Accessibility & contrast

On white

15.24

#191B63 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.38

#191B63 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #191B63

15.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##191B63	#FFFFFF	#000000	##FFFFFF
##191B63	1.00	15.24	1.38	15.24
#FFFFFF	15.24	1.00	21.00	1.00
#000000	1.38	21.00	1.00	21.00
##FFFFFF	15.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002965

Deuteranopia (green-blind)

#002262

Tritanopia (blue-blind)

#002E3C

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #191b63;
/* rgb */ color: rgb(25, 27, 99);
/* oklch */ color: oklch(27.7% 0.123 273.7);

Tailwind

colors: {
  custom: {
    50: '#625790',
    500: '#191b63',
    950: '#000000',
  },
}

SCSS

$custom: #191b63;
$custom-light: #625790;
$custom-dark: #000000;

JSON

{
  "hex": "#191b63",
  "rgb": {
    "r": 25,
    "g": 27,
    "b": 99
  },
  "hsl": {
    "h": 238.378,
    "s": 59.677,
    "l": 24.314
  },
  "oklch": {
    "l": 0.27703,
    "c": 0.12344,
    "h": 273.7
  },
  "luminance": 0.01891
}

Semantic roles & 50–950 ramp

primary

#191B63

secondary

#99973F

accent

#DF45E3

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#06030D

muted

#7A787D

Preview Lab

Preview with #191B63

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

Preview Lab → · Contrast checker → · Palette generator →