#191BB4#191BB4

#191BB4 is a dark, highly saturated blue. Relative luminance 0.043; OKLCH L 37.3% C 0.224 H 268.1°. Best body text is #FFFFFF at 11.31:1 contrast (WCAG AA passes).

Color values

HEX	#191BB4
RGB	rgb(25, 27, 180)
HSL	hsl(239, 76%, 40%)
HSV	hsv(239, 86%, 71%)
CMYK	cmyk(86.1%, 85%, 0%, 29.4%)
CIE-LAB	lab(24.59, 53.17, -77.34)
CIE-LCH	lch(24.59, 93.86, 304.51°)
OKLab	oklab(37.32% -0.0074 -0.2239)
OKLCH	oklch(37.32% 0.224 268.1)
XYZ	xyz(9.0282, 4.2847, 43.5224)
Luminance	0.0429 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#191BB4 #B4B219

analogous

#1968B4 #191BB4 #6519B4

triadic

#191BB4 #B4191B #1BB419

tetradic

#191BB4 #B41968 #B4B219 #19B465

square

#191BB4 #B41968 #B4B219 #19B465

split-complementary

#191BB4 #B46519 #68B419

monochromatic

#0A0B49 #12137E #191BB4 #292BE1 #5F60E9

Accessibility & contrast

On white

11.31

#191BB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#191BB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #191BB4

11.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##191BB4	#FFFFFF	#000000	##FFFFFF
##191BB4	1.00	11.31	1.86	11.31
#FFFFFF	11.31	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0042B8

Deuteranopia (green-blind)

#0032B2

Tritanopia (blue-blind)

#004E6B

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #191bb4;
/* rgb */ color: rgb(25, 27, 180);
/* oklch */ color: oklch(37.3% 0.224 268.1);

Tailwind

colors: {
  custom: {
    50: '#785dcc',
    500: '#191bb4',
    950: '#000000',
  },
}

SCSS

$custom: #191bb4;
$custom-light: #785dcc;
$custom-dark: #000000;

JSON

{
  "hex": "#191bb4",
  "rgb": {
    "r": 25,
    "g": 27,
    "b": 180
  },
  "hsl": {
    "h": 239.226,
    "s": 75.61,
    "l": 40.196
  },
  "oklch": {
    "l": 0.3732,
    "c": 0.22402,
    "h": 268.1
  },
  "luminance": 0.04286
}

Semantic roles & 50–950 ramp

primary

#191BB4

secondary

#CDCB5C

accent

#F036F2

background

#F8F5FC

surface

#EFE9F9

border

#CAC5D2

text

#0B0414

muted

#7C7982

Preview Lab

Preview with #191BB4

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

Preview Lab → · Contrast checker → · Palette generator →