#191F4F#191F4F

#191F4F is a dark, moderate blue. Relative luminance 0.018; OKLCH L 26.5% C 0.088 H 273.5°. Best body text is #FFFFFF at 15.55:1 contrast (WCAG AA passes).

Color values

HEX	#191F4F
RGB	rgb(25, 31, 79)
HSL	hsl(233, 52%, 20%)
HSV	hsv(233, 68%, 31%)
CMYK	cmyk(68.4%, 60.8%, 0%, 69%)
CIE-LAB	lab(14.12, 14.82, -30.46)
CIE-LCH	lch(14.12, 33.87, 295.95°)
OKLab	oklab(26.54% 0.0053 -0.0875)
OKLCH	oklch(26.54% 0.088 273.5)
XYZ	xyz(2.3017, 1.7510, 7.6123)
Luminance	0.0175 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 7.29

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#191F4F #4F4919

analogous

#193A4F #191F4F #2E194F

triadic

#191F4F #4F191F #1F4F19

tetradic

#191F4F #4F193A #4F4919 #194F2E

square

#191F4F #4F193A #4F4919 #194F2E

split-complementary

#191F4F #4F2E19 #3A4F19

monochromatic

#070917 #0A0D21 #191F4F #28317D #3643AC

Accessibility & contrast

On white

15.55

#191F4F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.35

#191F4F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #191F4F

15.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##191F4F	#FFFFFF	#000000	##FFFFFF
##191F4F	1.00	15.55	1.35	15.55
#FFFFFF	15.55	1.00	21.00	1.00
#000000	1.35	21.00	1.00	21.00
##FFFFFF	15.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002651

Deuteranopia (green-blind)

#00224E

Tritanopia (blue-blind)

#002A33

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #191f4f;
/* rgb */ color: rgb(25, 31, 79);
/* oklch */ color: oklch(26.5% 0.088 273.5);

Tailwind

colors: {
  custom: {
    50: '#5d5a81',
    500: '#191f4f',
    950: '#000000',
  },
}

SCSS

$custom: #191f4f;
$custom-light: #5d5a81;
$custom-dark: #000000;

JSON

{
  "hex": "#191f4f",
  "rgb": {
    "r": 25,
    "g": 31,
    "b": 79
  },
  "hsl": {
    "h": 233.333,
    "s": 51.923,
    "l": 20.392
  },
  "oklch": {
    "l": 0.26544,
    "c": 0.08762,
    "h": 273.5
  },
  "luminance": 0.01751
}

Semantic roles & 50–950 ramp

primary

#191F4F

secondary

#857E3E

accent

#CB4CDB

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #191F4F

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

Preview Lab → · Contrast checker → · Palette generator →