#191B5A#191B5A

#191B5A is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.8% C 0.110 H 274.7°. Best body text is #FFFFFF at 15.60:1 contrast (WCAG AA passes).

Color values

HEX	#191B5A
RGB	rgb(25, 27, 90)
HSL	hsl(238, 57%, 23%)
HSV	hsv(238, 72%, 35%)
CMYK	cmyk(72.2%, 70%, 0%, 64.7%)
CIE-LAB	lab(13.99, 22.10, -38.12)
CIE-LCH	lch(13.99, 44.06, 300.11°)
OKLab	oklab(26.76% 0.009 -0.11)
OKLCH	oklch(26.76% 0.11 274.7)
XYZ	xyz(2.6377, 1.7285, 9.8655)
Luminance	0.0173 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#191B5A #5A5819

analogous

#193B5A #191B5A #38195A

triadic

#191B5A #5A191B #1B5A19

tetradic

#191B5A #5A193B #5A5819 #195A38

square

#191B5A #5A193B #5A5819 #195A38

split-complementary

#191B5A #5A3819 #3B5A19

monochromatic

#070718 #0C0D2A #191B5A #26298A #3438BA

Accessibility & contrast

On white

15.60

#191B5A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.35

#191B5A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #191B5A

15.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##191B5A	#FFFFFF	#000000	##FFFFFF
##191B5A	1.00	15.60	1.35	15.60
#FFFFFF	15.60	1.00	21.00	1.00
#000000	1.35	21.00	1.00	21.00
##FFFFFF	15.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00275C

Deuteranopia (green-blind)

#002159

Tritanopia (blue-blind)

#002B37

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #191b5a;
/* rgb */ color: rgb(25, 27, 90);
/* oklch */ color: oklch(26.8% 0.110 274.7);

Tailwind

colors: {
  custom: {
    50: '#605789',
    500: '#191b5a',
    950: '#000000',
  },
}

SCSS

$custom: #191b5a;
$custom-light: #605789;
$custom-dark: #000000;

JSON

{
  "hex": "#191b5a",
  "rgb": {
    "r": 25,
    "g": 27,
    "b": 90
  },
  "hsl": {
    "h": 238.154,
    "s": 56.522,
    "l": 22.549
  },
  "oklch": {
    "l": 0.26761,
    "c": 0.11036,
    "h": 274.7
  },
  "luminance": 0.01729
}

Semantic roles & 50–950 ramp

primary

#191B5A

secondary

#908E3E

accent

#DB48E0

background

#F5F5F8

surface

#EAE9F0

border

#C6C5CB

text

#05030C

muted

#79787D

Preview Lab

Preview with #191B5A

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

Preview Lab → · Contrast checker → · Palette generator →