#191B4F#191B4F

#191B4F is a dark, moderate blue. Relative luminance 0.016; OKLCH L 25.7% C 0.094 H 275.9°. Best body text is #FFFFFF at 16.02:1 contrast (WCAG AA passes).

Color values

HEX	#191B4F
RGB	rgb(25, 27, 79)
HSL	hsl(238, 52%, 20%)
HSV	hsv(238, 68%, 31%)
CMYK	cmyk(68.4%, 65.8%, 0%, 69%)
CIE-LAB	lab(12.95, 17.78, -32.35)
CIE-LCH	lch(12.95, 36.92, 298.79°)
OKLab	oklab(25.67% 0.0097 -0.0931)
OKLCH	oklch(25.67% 0.094 275.9)
XYZ	xyz(2.2037, 1.5549, 7.5796)
Luminance	0.0155 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.47

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#191B4F #4F4D19

analogous

#19364F #191B4F #32194F

triadic

#191B4F #4F191B #1B4F19

tetradic

#191B4F #4F1936 #4F4D19 #194F32

square

#191B4F #4F1936 #4F4D19 #194F32

split-complementary

#191B4F #4F3219 #364F19

monochromatic

#070817 #0A0B21 #191B4F #282B7D #363BAC

Accessibility & contrast

On white

16.02

#191B4F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.31

#191B4F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #191B4F

16.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##191B4F	#FFFFFF	#000000	##FFFFFF
##191B4F	1.00	16.02	1.31	16.02
#FFFFFF	16.02	1.00	21.00	1.00
#000000	1.31	21.00	1.00	21.00
##FFFFFF	16.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002451

Deuteranopia (green-blind)

#001F4E

Tritanopia (blue-blind)

#002832

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #191b4f;
/* rgb */ color: rgb(25, 27, 79);
/* oklch */ color: oklch(25.7% 0.094 275.9);

Tailwind

colors: {
  custom: {
    50: '#5d5781',
    500: '#191b4f',
    950: '#000000',
  },
}

SCSS

$custom: #191b4f;
$custom-light: #5d5781;
$custom-dark: #000000;

JSON

{
  "hex": "#191b4f",
  "rgb": {
    "r": 25,
    "g": 27,
    "b": 79
  },
  "hsl": {
    "h": 237.778,
    "s": 51.923,
    "l": 20.392
  },
  "oklch": {
    "l": 0.25675,
    "c": 0.09359,
    "h": 275.9
  },
  "luminance": 0.01555
}

Semantic roles & 50–950 ramp

primary

#191B4F

secondary

#85833E

accent

#D64CDB

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#05030A

muted

#79787C

Preview Lab

Preview with #191B4F

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

Preview Lab → · Contrast checker → · Palette generator →