#191D5B#191D5B

#191D5B is a dark, moderate blue. Relative luminance 0.018; OKLCH L 27.3% C 0.109 H 273.8°. Best body text is #FFFFFF at 15.35:1 contrast (WCAG AA passes).

Color values

HEX	#191D5B
RGB	rgb(25, 29, 91)
HSL	hsl(236, 57%, 23%)
HSV	hsv(236, 73%, 36%)
CMYK	cmyk(72.5%, 68.1%, 0%, 64.3%)
CIE-LAB	lab(14.63, 21.07, -37.75)
CIE-LCH	lch(14.63, 43.24, 299.17°)
OKLab	oklab(27.26% 0.0071 -0.1089)
OKLCH	oklch(27.26% 0.109 273.8)
XYZ	xyz(2.7280, 1.8405, 10.1070)
Luminance	0.0184 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#191D5B #5B5719

analogous

#193E5B #191D5B #36195B

triadic

#191D5B #5B191D #1D5B19

tetradic

#191D5B #5B193E #5B5719 #195B36

square

#191D5B #5B193E #5B5719 #195B36

split-complementary

#191D5B #5B3619 #3E5B19

monochromatic

#070818 #0C0E2B #191D5B #262C8B #333CBB

Accessibility & contrast

On white

15.35

#191D5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.37

#191D5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #191D5B

15.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##191D5B	#FFFFFF	#000000	##FFFFFF
##191D5B	1.00	15.35	1.37	15.35
#FFFFFF	15.35	1.00	21.00	1.00
#000000	1.37	21.00	1.00	21.00
##FFFFFF	15.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00285D

Deuteranopia (green-blind)

#00225A

Tritanopia (blue-blind)

#002D39

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #191d5b;
/* rgb */ color: rgb(25, 29, 91);
/* oklch */ color: oklch(27.3% 0.109 273.8);

Tailwind

colors: {
  custom: {
    50: '#60598a',
    500: '#191d5b',
    950: '#000000',
  },
}

SCSS

$custom: #191d5b;
$custom-light: #60598a;
$custom-dark: #000000;

JSON

{
  "hex": "#191d5b",
  "rgb": {
    "r": 25,
    "g": 29,
    "b": 91
  },
  "hsl": {
    "h": 236.364,
    "s": 56.897,
    "l": 22.745
  },
  "oklch": {
    "l": 0.27255,
    "c": 0.10915,
    "h": 273.8
  },
  "luminance": 0.01841
}

Semantic roles & 50–950 ramp

primary

#191D5B

secondary

#918C3F

accent

#D748E0

background

#F5F5F8

surface

#EAE9F0

border

#C6C5CB

text

#05030C

muted

#79787D

Preview Lab

Preview with #191D5B

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

Preview Lab → · Contrast checker → · Palette generator →