#1B1E79#1B1E79

#1B1E79 is a dark, vivid blue. Relative luminance 0.025; OKLCH L 30.7% C 0.150 H 272.0°. Best body text is #FFFFFF at 13.92:1 contrast (WCAG AA passes).

Color values

HEX	#1B1E79
RGB	rgb(27, 30, 121)
HSL	hsl(238, 64%, 29%)
HSV	hsv(238, 78%, 47%)
CMYK	cmyk(77.7%, 75.2%, 0%, 52.5%)
CIE-LAB	lab(18.11, 32.06, -51.66)
CIE-LCH	lch(18.11, 60.80, 301.83°)
OKLab	oklab(30.75% 0.0052 -0.1495)
OKLCH	oklch(30.75% 0.15 272)
XYZ	xyz(4.3663, 2.5416, 18.3459)
Luminance	0.0254 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1E79 #79761B

analogous

#1B4D79 #1B1E79 #471B79

triadic

#1B1E79 #791B1E #1E791B

tetradic

#1B1E79 #791B4D #79761B #1B7947

square

#1B1E79 #791B4D #79761B #1B7947

split-complementary

#1B1E79 #79471B #4D791B

monochromatic

#060619 #101247 #1B1E79 #262AAB #3B40D3

Accessibility & contrast

On white

13.92

#1B1E79 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#1B1E79 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1E79

13.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1E79	#FFFFFF	#000000	##FFFFFF
##1B1E79	1.00	13.92	1.51	13.92
#FFFFFF	13.92	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00317C

Deuteranopia (green-blind)

#002877

Tritanopia (blue-blind)

#003849

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #1b1e79;
/* rgb */ color: rgb(27, 30, 121);
/* oklch */ color: oklch(30.7% 0.150 272.0);

Tailwind

colors: {
  custom: {
    50: '#685ba1',
    500: '#1b1e79',
    950: '#000000',
  },
}

SCSS

$custom: #1b1e79;
$custom-light: #685ba1;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1e79",
  "rgb": {
    "r": 27,
    "g": 30,
    "b": 121
  },
  "hsl": {
    "h": 238.085,
    "s": 63.514,
    "l": 29.02
  },
  "oklch": {
    "l": 0.30747,
    "c": 0.14961,
    "h": 272
  },
  "luminance": 0.02542
}

Semantic roles & 50–950 ramp

primary

#1B1E79

secondary

#ADAA43

accent

#E141E7

background

#F6F5FA

surface

#ECE9F3

border

#C7C5CD

text

#07040F

muted

#7A797F

Preview Lab

Preview with #1B1E79

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

Preview Lab → · Contrast checker → · Palette generator →