#1B197F#1B197F

#1B197F is a dark, vivid blue. Relative luminance 0.025; OKLCH L 30.7% C 0.162 H 272.2°. Best body text is #FFFFFF at 14.07:1 contrast (WCAG AA passes).

Color values

HEX	#1B197F
RGB	rgb(27, 25, 127)
HSL	hsl(241, 67%, 30%)
HSV	hsv(241, 80%, 50%)
CMYK	cmyk(78.7%, 80.3%, 0%, 50.2%)
CIE-LAB	lab(17.74, 37.18, -56.10)
CIE-LCH	lch(17.74, 67.30, 303.53°)
OKLab	oklab(30.69% 0.0063 -0.1624)
OKLCH	oklch(30.69% 0.162 272.2)
XYZ	xyz(4.6291, 2.4601, 20.3054)
Luminance	0.0246 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B197F #7D7F19

analogous

#194A7F #1B197F #4E197F

triadic

#1B197F #7F1B19 #197F1B

tetradic

#1B197F #7F194A #7D7F19 #197F4E

square

#1B197F #7F194A #7D7F19 #197F4E

split-complementary

#1B197F #7F4E19 #4A7F19

monochromatic

#05051A #100F4C #1B197F #2623B2 #3D3AD8

Accessibility & contrast

On white

14.07

#1B197F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.49

#1B197F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B197F

14.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B197F	#FFFFFF	#000000	##FFFFFF
##1B197F	1.00	14.07	1.49	14.07
#FFFFFF	14.07	1.00	21.00	1.00
#000000	1.49	21.00	1.00	21.00
##FFFFFF	14.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003082

Deuteranopia (green-blind)

#00267D

Tritanopia (blue-blind)

#00384B

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #1b197f;
/* rgb */ color: rgb(27, 25, 127);
/* oklch */ color: oklch(30.7% 0.162 272.2);

Tailwind

colors: {
  custom: {
    50: '#6b58a5',
    500: '#1b197f',
    950: '#000000',
  },
}

SCSS

$custom: #1b197f;
$custom-light: #6b58a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1b197f",
  "rgb": {
    "r": 27,
    "g": 25,
    "b": 127
  },
  "hsl": {
    "h": 241.176,
    "s": 67.105,
    "l": 29.804
  },
  "oklch": {
    "l": 0.30689,
    "c": 0.16249,
    "h": 272.2
  },
  "luminance": 0.02461
}

Semantic roles & 50–950 ramp

primary

#1B197F

secondary

#B1B341

accent

#EA3EE7

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08030F

muted

#7B787F

Preview Lab

Preview with #1B197F

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

Preview Lab → · Contrast checker → · Palette generator →