#1B106F#1B106F

#1B106F is a dark, vivid blue. Relative luminance 0.018; OKLCH L 27.6% C 0.150 H 275.3°. Best body text is #FFFFFF at 15.55:1 contrast (WCAG AA passes).

Color values

HEX	#1B106F
RGB	rgb(27, 16, 111)
HSL	hsl(247, 75%, 25%)
HSV	hsv(247, 86%, 44%)
CMYK	cmyk(75.7%, 85.6%, 0%, 56.5%)
CIE-LAB	lab(14.12, 36.60, -51.79)
CIE-LCH	lch(14.12, 63.42, 305.25°)
OKLab	oklab(27.6% 0.014 -0.1497)
OKLCH	oklch(27.6% 0.15 275.3)
XYZ	xyz(3.5056, 1.7509, 15.1891)
Luminance	0.0175 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B106F #646F10

analogous

#10356F #1B106F #4A106F

triadic

#1B106F #6F1B10 #106F1B

tetradic

#1B106F #6F1035 #646F10 #106F4A

square

#1B106F #6F1035 #646F10 #106F4A

split-complementary

#1B106F #6F4A10 #356F10

monochromatic

#07041B #0E083A #1B106F #2818A4 #351FDA

Accessibility & contrast

On white

15.55

#1B106F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.35

#1B106F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B106F

15.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B106F	#FFFFFF	#000000	##FFFFFF
##1B106F	1.00	15.55	1.35	15.55
#FFFFFF	15.55	1.00	21.00	1.00
#000000	1.35	21.00	1.00	21.00
##FFFFFF	15.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002872

Deuteranopia (green-blind)

#00206D

Tritanopia (blue-blind)

#002E40

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #1b106f;
/* rgb */ color: rgb(27, 16, 111);
/* oklch */ color: oklch(27.6% 0.150 275.3);

Tailwind

colors: {
  custom: {
    50: '#675299',
    500: '#1b106f',
    950: '#000000',
  },
}

SCSS

$custom: #1b106f;
$custom-light: #675299;
$custom-dark: #000000;

JSON

{
  "hex": "#1b106f",
  "rgb": {
    "r": 27,
    "g": 16,
    "b": 111
  },
  "hsl": {
    "h": 246.947,
    "s": 74.803,
    "l": 24.902
  },
  "oklch": {
    "l": 0.27598,
    "c": 0.15038,
    "h": 275.3
  },
  "luminance": 0.01751
}

Semantic roles & 50–950 ramp

primary

#1B106F

secondary

#99A734

accent

#F136DC

background

#F6F4F9

surface

#EBE7F2

border

#C6C3CC

text

#07020E

muted

#7A787E

Preview Lab

Preview with #1B106F

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

Preview Lab → · Contrast checker → · Palette generator →