#1B1D64#1B1D64

#1B1D64 is a dark, vivid blue. Relative luminance 0.020; OKLCH L 28.3% C 0.122 H 274.2°. Best body text is #FFFFFF at 14.93:1 contrast (WCAG AA passes).

Color values

HEX	#1B1D64
RGB	rgb(27, 29, 100)
HSL	hsl(238, 57%, 25%)
HSV	hsv(238, 73%, 39%)
CMYK	cmyk(73%, 71%, 0%, 60.8%)
CIE-LAB	lab(15.65, 24.87, -42.05)
CIE-LCH	lch(15.65, 48.85, 300.60°)
OKLab	oklab(28.31% 0.0089 -0.1215)
OKLCH	oklch(28.31% 0.122 274.2)
XYZ	xyz(3.1908, 2.0315, 12.2781)
Luminance	0.0203 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1D64 #64621B

analogous

#1B4264 #1B1D64 #3D1B64

triadic

#1B1D64 #641B1D #1D641B

tetradic

#1B1D64 #641B42 #64621B #1B643D

square

#1B1D64 #641B42 #64621B #1B643D

split-complementary

#1B1D64 #643D1B #42641B

monochromatic

#070718 #0E0F34 #1B1D64 #282B94 #3539C4

Accessibility & contrast

On white

14.93

#1B1D64 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.41

#1B1D64 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1D64

14.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1D64	#FFFFFF	#000000	##FFFFFF
##1B1D64	1.00	14.93	1.41	14.93
#FFFFFF	14.93	1.00	21.00	1.00
#000000	1.41	21.00	1.00	21.00
##FFFFFF	14.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002A66

Deuteranopia (green-blind)

#002463

Tritanopia (blue-blind)

#00303D

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #1b1d64;
/* rgb */ color: rgb(27, 29, 100);
/* oklch */ color: oklch(28.3% 0.122 274.2);

Tailwind

colors: {
  custom: {
    50: '#635991',
    500: '#1b1d64',
    950: '#000000',
  },
}

SCSS

$custom: #1b1d64;
$custom-light: #635991;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1d64",
  "rgb": {
    "r": 27,
    "g": 29,
    "b": 100
  },
  "hsl": {
    "h": 238.356,
    "s": 57.48,
    "l": 24.902
  },
  "oklch": {
    "l": 0.28312,
    "c": 0.12179,
    "h": 274.2
  },
  "luminance": 0.02032
}

Semantic roles & 50–950 ramp

primary

#1B1D64

secondary

#999741

accent

#DD47E1

background

#F6F5F9

surface

#EBE9F1

border

#C6C5CB

text

#06030D

muted

#7A787E

Preview Lab

Preview with #1B1D64

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

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