#1B0F8E#1B0F8E

#1B0F8E is a dark, vivid blue. Relative luminance 0.025; OKLCH L 31.4% C 0.188 H 271.5°. Best body text is #FFFFFF at 13.95:1 contrast (WCAG AA passes).

Color values

HEX	#1B0F8E
RGB	rgb(27, 15, 142)
HSL	hsl(246, 81%, 31%)
HSV	hsv(246, 89%, 56%)
CMYK	cmyk(81%, 89.4%, 0%, 44.3%)
CIE-LAB	lab(18.04, 46.71, -65.04)
CIE-LCH	lch(18.04, 80.08, 305.68°)
OKLab	oklab(31.45% 0.0051 -0.1881)
OKLCH	oklch(31.45% 0.188 271.5)
XYZ	xyz(5.5037, 2.5270, 25.7836)
Luminance	0.0253 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B0F8E #828E0F

analogous

#0F428E #1B0F8E #5A0F8E

triadic

#1B0F8E #8E1B0F #0F8E1B

tetradic

#1B0F8E #8E0F42 #828E0F #0F8E5A

square

#1B0F8E #8E0F42 #828E0F #0F8E5A

split-complementary

#1B0F8E #8E5A0F #428E0F

monochromatic

#06031F #100957 #1B0F8E #2615C5 #402EE9

Accessibility & contrast

On white

13.95

#1B0F8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#1B0F8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B0F8E

13.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B0F8E	#FFFFFF	#000000	##FFFFFF
##1B0F8E	1.00	13.95	1.51	13.95
#FFFFFF	13.95	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003291

Deuteranopia (green-blind)

#00268C

Tritanopia (blue-blind)

#003B53

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #1b0f8e;
/* rgb */ color: rgb(27, 15, 142);
/* oklch */ color: oklch(31.4% 0.188 271.5);

Tailwind

colors: {
  custom: {
    50: '#7054b1',
    500: '#1b0f8e',
    950: '#000000',
  },
}

SCSS

$custom: #1b0f8e;
$custom-light: #7054b1;
$custom-dark: #000000;

JSON

{
  "hex": "#1b0f8e",
  "rgb": {
    "r": 27,
    "g": 15,
    "b": 142
  },
  "hsl": {
    "h": 245.669,
    "s": 80.892,
    "l": 30.784
  },
  "oklch": {
    "l": 0.31446,
    "c": 0.18815,
    "h": 271.5
  },
  "luminance": 0.02528
}

Semantic roles & 50–950 ramp

primary

#1B0F8E

secondary

#B6C336

accent

#F731E5

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090311

muted

#7B7880

Preview Lab

Preview with #1B0F8E

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

Preview Lab → · Contrast checker → · Palette generator →