#191BB3#191BB3

#191BB3 is a dark, highly saturated blue. Relative luminance 0.042; OKLCH L 37.2% C 0.223 H 268.1°. Best body text is #FFFFFF at 11.36:1 contrast (WCAG AA passes).

Color values

HEX	#191BB3
RGB	rgb(25, 27, 179)
HSL	hsl(239, 75%, 40%)
HSV	hsv(239, 86%, 70%)
CMYK	cmyk(86%, 84.9%, 0%, 29.8%)
CIE-LAB	lab(24.46, 52.87, -76.96)
CIE-LCH	lch(24.46, 93.37, 304.49°)
OKLab	oklab(37.2% -0.0072 -0.2228)
OKLCH	oklch(37.2% 0.223 268.1)
XYZ	xyz(8.9267, 4.2441, 42.9878)
Luminance	0.0425 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#191BB3 #B3B119

analogous

#1968B3 #191BB3 #6419B3

triadic

#191BB3 #B3191B #1BB319

tetradic

#191BB3 #B31968 #B3B119 #19B364

square

#191BB3 #B31968 #B3B119 #19B364

split-complementary

#191BB3 #B36419 #68B319

monochromatic

#0A0B48 #12137D #191BB3 #282BE1 #5E60E8

Accessibility & contrast

On white

11.36

#191BB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#191BB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #191BB3

11.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##191BB3	#FFFFFF	#000000	##FFFFFF
##191BB3	1.00	11.36	1.85	11.36
#FFFFFF	11.36	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0042B7

Deuteranopia (green-blind)

#0032B1

Tritanopia (blue-blind)

#004E6A

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #191bb3;
/* rgb */ color: rgb(25, 27, 179);
/* oklch */ color: oklch(37.2% 0.223 268.1);

Tailwind

colors: {
  custom: {
    50: '#785dcb',
    500: '#191bb3',
    950: '#000000',
  },
}

SCSS

$custom: #191bb3;
$custom-light: #785dcb;
$custom-dark: #000000;

JSON

{
  "hex": "#191bb3",
  "rgb": {
    "r": 25,
    "g": 27,
    "b": 179
  },
  "hsl": {
    "h": 239.221,
    "s": 75.49,
    "l": 40
  },
  "oklch": {
    "l": 0.37195,
    "c": 0.22291,
    "h": 268.1
  },
  "luminance": 0.04245
}

Semantic roles & 50–950 ramp

primary

#191BB3

secondary

#CCCB5B

accent

#F036F2

background

#F8F5FC

surface

#EFE9F9

border

#CAC5D2

text

#0B0414

muted

#7C7982

Preview Lab

Preview with #191BB3

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

Preview Lab → · Contrast checker → · Palette generator →