#1B0F8D#1B0F8D

#1B0F8D is a dark, vivid blue. Relative luminance 0.025; OKLCH L 31.3% C 0.187 H 271.6°. Best body text is #FFFFFF at 14.00:1 contrast (WCAG AA passes).

Color values

HEX	#1B0F8D
RGB	rgb(27, 15, 141)
HSL	hsl(246, 81%, 31%)
HSV	hsv(246, 89%, 55%)
CMYK	cmyk(80.9%, 89.4%, 0%, 44.7%)
CIE-LAB	lab(17.91, 46.41, -64.64)
CIE-LCH	lch(17.91, 79.58, 305.68°)
OKLab	oklab(31.32% 0.0053 -0.1869)
OKLCH	oklch(31.32% 0.187 271.6)
XYZ	xyz(5.4289, 2.4971, 25.3900)
Luminance	0.0250 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B0F8D #818D0F

analogous

#0F428D #1B0F8D #5A0F8D

triadic

#1B0F8D #8D1B0F #0F8D1B

tetradic

#1B0F8D #8D0F42 #818D0F #0F8D5A

square

#1B0F8D #8D0F42 #818D0F #0F8D5A

split-complementary

#1B0F8D #8D5A0F #428D0F

monochromatic

#06031E #100956 #1B0F8D #2615C4 #3F2EE9

Accessibility & contrast

On white

14.00

#1B0F8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.50

#1B0F8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B0F8D

14.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B0F8D	#FFFFFF	#000000	##FFFFFF
##1B0F8D	1.00	14.00	1.50	14.00
#FFFFFF	14.00	1.00	21.00	1.00
#000000	1.50	21.00	1.00	21.00
##FFFFFF	14.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003290

Deuteranopia (green-blind)

#00258B

Tritanopia (blue-blind)

#003A52

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #1b0f8d;
/* rgb */ color: rgb(27, 15, 141);
/* oklch */ color: oklch(31.3% 0.187 271.6);

Tailwind

colors: {
  custom: {
    50: '#6f54b0',
    500: '#1b0f8d',
    950: '#000000',
  },
}

SCSS

$custom: #1b0f8d;
$custom-light: #6f54b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1b0f8d",
  "rgb": {
    "r": 27,
    "g": 15,
    "b": 141
  },
  "hsl": {
    "h": 245.714,
    "s": 80.769,
    "l": 30.588
  },
  "oklch": {
    "l": 0.31316,
    "c": 0.187,
    "h": 271.6
  },
  "luminance": 0.02498
}

Semantic roles & 50–950 ramp

primary

#1B0F8D

secondary

#B5C236

accent

#F731E4

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090311

muted

#7B7880

Preview Lab

Preview with #1B0F8D

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

Preview Lab → · Contrast checker → · Palette generator →