#1B0F70#1B0F70

#1B0F70 is a dark, vivid blue. Relative luminance 0.017; OKLCH L 27.6% C 0.152 H 275.3°. Best body text is #FFFFFF at 15.57:1 contrast (WCAG AA passes).

Color values

HEX	#1B0F70
RGB	rgb(27, 15, 112)
HSL	hsl(247, 76%, 25%)
HSV	hsv(247, 87%, 44%)
CMYK	cmyk(75.9%, 86.6%, 0%, 56.1%)
CIE-LAB	lab(14.08, 37.41, -52.51)
CIE-LCH	lch(14.08, 64.47, 305.47°)
OKLab	oklab(27.61% 0.014 -0.1518)
OKLCH	oklch(27.61% 0.152 275.3)
XYZ	xyz(3.5465, 1.7442, 15.4758)
Luminance	0.0175 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B0F70 #64700F

analogous

#0F3370 #1B0F70 #4C0F70

triadic

#1B0F70 #701B0F #0F701B

tetradic

#1B0F70 #700F33 #64700F #0F704C

square

#1B0F70 #700F33 #64700F #0F704C

split-complementary

#1B0F70 #704C0F #33700F

monochromatic

#07041B #0E083A #1B0F70 #2816A6 #351DDC

Accessibility & contrast

On white

15.57

#1B0F70 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.35

#1B0F70 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B0F70

15.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B0F70	#FFFFFF	#000000	##FFFFFF
##1B0F70	1.00	15.57	1.35	15.57
#FFFFFF	15.57	1.00	21.00	1.00
#000000	1.35	21.00	1.00	21.00
##FFFFFF	15.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002873

Deuteranopia (green-blind)

#001F6E

Tritanopia (blue-blind)

#002E41

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #1b0f70;
/* rgb */ color: rgb(27, 15, 112);
/* oklch */ color: oklch(27.6% 0.152 275.3);

Tailwind

colors: {
  custom: {
    50: '#68519a',
    500: '#1b0f70',
    950: '#000000',
  },
}

SCSS

$custom: #1b0f70;
$custom-light: #68519a;
$custom-dark: #000000;

JSON

{
  "hex": "#1b0f70",
  "rgb": {
    "r": 27,
    "g": 15,
    "b": 112
  },
  "hsl": {
    "h": 247.423,
    "s": 76.378,
    "l": 24.902
  },
  "oklch": {
    "l": 0.27607,
    "c": 0.15244,
    "h": 275.3
  },
  "luminance": 0.01745
}

Semantic roles & 50–950 ramp

primary

#1B0F70

secondary

#99A833

accent

#F335DB

background

#F6F4F9

surface

#ECE7F2

border

#C7C3CC

text

#07020E

muted

#7A787E

Preview Lab

Preview with #1B0F70

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

Preview Lab → · Contrast checker → · Palette generator →