#191F81#191F81

#191F81 is a dark, vivid blue. Relative luminance 0.028; OKLCH L 31.7% C 0.160 H 270.4°. Best body text is #FFFFFF at 13.51:1 contrast (WCAG AA passes).

Color values

HEX	#191F81
RGB	rgb(25, 31, 129)
HSL	hsl(237, 68%, 30%)
HSV	hsv(237, 81%, 51%)
CMYK	cmyk(80.6%, 76%, 0%, 49.4%)
CIE-LAB	lab(19.10, 34.17, -55.11)
CIE-LCH	lch(19.10, 64.85, 301.80°)
OKLab	oklab(31.69% 0.0012 -0.1596)
OKLCH	oklch(31.69% 0.16 270.4)
XYZ	xyz(4.8520, 2.7711, 21.0438)
Luminance	0.0277 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#191F81 #817B19

analogous

#195381 #191F81 #471981

triadic

#191F81 #81191F #1F8119

tetradic

#191F81 #811953 #817B19 #198147

square

#191F81 #811953 #817B19 #198147

split-complementary

#191F81 #814719 #538119

monochromatic

#05061A #0F134E #191F81 #232BB4 #3B44D9

Accessibility & contrast

On white

13.51

#191F81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#191F81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #191F81

13.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##191F81	#FFFFFF	#000000	##FFFFFF
##191F81	1.00	13.51	1.55	13.51
#FFFFFF	13.51	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003384

Deuteranopia (green-blind)

#00297F

Tritanopia (blue-blind)

#003B4E

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #191f81;
/* rgb */ color: rgb(25, 31, 129);
/* oklch */ color: oklch(31.7% 0.160 270.4);

Tailwind

colors: {
  custom: {
    50: '#6a5ca7',
    500: '#191f81',
    950: '#000000',
  },
}

SCSS

$custom: #191f81;
$custom-light: #6a5ca7;
$custom-dark: #000000;

JSON

{
  "hex": "#191f81",
  "rgb": {
    "r": 25,
    "g": 31,
    "b": 129
  },
  "hsl": {
    "h": 236.538,
    "s": 67.532,
    "l": 30.196
  },
  "oklch": {
    "l": 0.31692,
    "c": 0.15961,
    "h": 270.4
  },
  "luminance": 0.02772
}

Semantic roles & 50–950 ramp

primary

#191F81

secondary

#B5AE41

accent

#E03DEA

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#080410

muted

#7A797F

Preview Lab

Preview with #191F81

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

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