#1B0F5F#1B0F5F

#1B0F5F is a dark, vivid blue. Relative luminance 0.014; OKLCH L 25.5% C 0.131 H 278.5°. Best body text is #FFFFFF at 16.40:1 contrast (WCAG AA passes).

Color values

HEX	#1B0F5F
RGB	rgb(27, 15, 95)
HSL	hsl(249, 73%, 22%)
HSV	hsv(249, 84%, 37%)
CMYK	cmyk(71.6%, 84.2%, 0%, 62.7%)
CIE-LAB	lab(11.96, 31.80, -44.80)
CIE-LCH	lch(11.96, 54.94, 305.37°)
OKLab	oklab(25.52% 0.0194 -0.1294)
OKLCH	oklch(25.52% 0.131 278.5)
XYZ	xyz(2.6877, 1.4007, 10.9530)
Luminance	0.0140 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B0F5F #535F0F

analogous

#0F2B5F #1B0F5F #430F5F

triadic

#1B0F5F #5F1B0F #0F5F1B

tetradic

#1B0F5F #5F0F2B #535F0F #0F5F43

square

#1B0F5F #5F0F2B #535F0F #0F5F43

split-complementary

#1B0F5F #5F430F #2B5F0F

monochromatic

#08041A #0C072A #1B0F5F #2A1794 #3920C9

Accessibility & contrast

On white

16.40

#1B0F5F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.28

#1B0F5F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B0F5F

16.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B0F5F	#FFFFFF	#000000	##FFFFFF
##1B0F5F	1.00	16.40	1.28	16.40
#FFFFFF	16.40	1.00	21.00	1.00
#000000	1.28	21.00	1.00	21.00
##FFFFFF	16.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002261

Deuteranopia (green-blind)

#001C5E

Tritanopia (blue-blind)

#002737

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #1b0f5f;
/* rgb */ color: rgb(27, 15, 95);
/* oklch */ color: oklch(25.5% 0.131 278.5);

Tailwind

colors: {
  custom: {
    50: '#63508d',
    500: '#1b0f5f',
    950: '#000000',
  },
}

SCSS

$custom: #1b0f5f;
$custom-light: #63508d;
$custom-dark: #000000;

JSON

{
  "hex": "#1b0f5f",
  "rgb": {
    "r": 27,
    "g": 15,
    "b": 95
  },
  "hsl": {
    "h": 249,
    "s": 72.727,
    "l": 21.569
  },
  "oklch": {
    "l": 0.25519,
    "c": 0.13086,
    "h": 278.5
  },
  "luminance": 0.01401
}

Semantic roles & 50–950 ramp

primary

#1B0F5F

secondary

#899832

accent

#EF38D4

background

#F6F4F8

surface

#EBE7F0

border

#C6C3CB

text

#06020C

muted

#7A787D

Preview Lab

Preview with #1B0F5F

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

Preview Lab → · Contrast checker → · Palette generator →