#1B1D76#1B1D76

#1B1D76 is a dark, vivid blue. Relative luminance 0.024; OKLCH L 30.3% C 0.147 H 272.4°. Best body text is #FFFFFF at 14.15:1 contrast (WCAG AA passes).

Color values

HEX	#1B1D76
RGB	rgb(27, 29, 118)
HSL	hsl(239, 63%, 28%)
HSV	hsv(239, 77%, 46%)
CMYK	cmyk(77.1%, 75.4%, 0%, 53.7%)
CIE-LAB	lab(17.55, 31.60, -50.65)
CIE-LCH	lch(17.55, 59.70, 301.96°)
OKLab	oklab(30.25% 0.0063 -0.1466)
OKLCH	oklch(30.25% 0.147 272.4)
XYZ	xyz(4.1603, 2.4193, 17.3837)
Luminance	0.0242 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1D76 #76741B

analogous

#1B4A76 #1B1D76 #461B76

triadic

#1B1D76 #761B1D #1D761B

tetradic

#1B1D76 #761B4A #76741B #1B7646

square

#1B1D76 #761B4A #76741B #1B7646

split-complementary

#1B1D76 #76461B #4A761B

monochromatic

#060619 #101144 #1B1D76 #2629A8 #3A3DD2

Accessibility & contrast

On white

14.15

#1B1D76 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.48

#1B1D76 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1D76

14.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1D76	#FFFFFF	#000000	##FFFFFF
##1B1D76	1.00	14.15	1.48	14.15
#FFFFFF	14.15	1.00	21.00	1.00
#000000	1.48	21.00	1.00	21.00
##FFFFFF	14.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F79

Deuteranopia (green-blind)

#002774

Tritanopia (blue-blind)

#003647

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #1b1d76;
/* rgb */ color: rgb(27, 29, 118);
/* oklch */ color: oklch(30.3% 0.147 272.4);

Tailwind

colors: {
  custom: {
    50: '#685a9f',
    500: '#1b1d76',
    950: '#000000',
  },
}

SCSS

$custom: #1b1d76;
$custom-light: #685a9f;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1d76",
  "rgb": {
    "r": 27,
    "g": 29,
    "b": 118
  },
  "hsl": {
    "h": 238.681,
    "s": 62.759,
    "l": 28.431
  },
  "oklch": {
    "l": 0.30252,
    "c": 0.14671,
    "h": 272.4
  },
  "luminance": 0.0242
}

Semantic roles & 50–950 ramp

primary

#1B1D76

secondary

#AAA842

accent

#E242E6

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#07040F

muted

#7A797E

Preview Lab

Preview with #1B1D76

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

Preview Lab → · Contrast checker → · Palette generator →