#191D8B#191D8B

#191D8B is a dark, vivid blue. Relative luminance 0.029; OKLCH L 32.6% C 0.174 H 270.0°. Best body text is #FFFFFF at 13.21:1 contrast (WCAG AA passes).

Color values

HEX	#191D8B
RGB	rgb(25, 29, 139)
HSL	hsl(238, 70%, 32%)
HSV	hsv(238, 82%, 55%)
CMYK	cmyk(82%, 79.1%, 0%, 45.5%)
CIE-LAB	lab(19.84, 38.91, -60.19)
CIE-LCH	lch(19.84, 71.67, 302.88°)
OKLab	oklab(32.55% 0.0001 -0.1743)
OKLCH	oklch(32.55% 0.174 270)
XYZ	xyz(5.4989, 2.9488, 24.7005)
Luminance	0.0295 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#191D8B #8B8719

analogous

#19568B #191D8B #4E198B

triadic

#191D8B #8B191D #1D8B19

tetradic

#191D8B #8B1956 #8B8719 #198B4E

square

#191D8B #8B1956 #8B8719 #198B4E

split-complementary

#191D8B #8B4E19 #568B19

monochromatic

#060723 #101257 #191D8B #2228BF #4147DD

Accessibility & contrast

On white

13.21

#191D8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#191D8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #191D8B

13.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##191D8B	#FFFFFF	#000000	##FFFFFF
##191D8B	1.00	13.21	1.59	13.21
#FFFFFF	13.21	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00368E

Deuteranopia (green-blind)

#002A89

Tritanopia (blue-blind)

#003E53

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #191d8b;
/* rgb */ color: rgb(25, 29, 139);
/* oklch */ color: oklch(32.6% 0.174 270.0);

Tailwind

colors: {
  custom: {
    50: '#6d5bae',
    500: '#191d8b',
    950: '#000000',
  },
}

SCSS

$custom: #191d8b;
$custom-light: #6d5bae;
$custom-dark: #000000;

JSON

{
  "hex": "#191d8b",
  "rgb": {
    "r": 25,
    "g": 29,
    "b": 139
  },
  "hsl": {
    "h": 237.895,
    "s": 69.512,
    "l": 32.157
  },
  "oklch": {
    "l": 0.32553,
    "c": 0.17433,
    "h": 270
  },
  "luminance": 0.02949
}

Semantic roles & 50–950 ramp

primary

#191D8B

secondary

#BEB942

accent

#E63BEC

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#080410

muted

#7B797F

Preview Lab

Preview with #191D8B

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

Preview Lab → · Contrast checker → · Palette generator →