#1B1B60#1B1B60

#1B1B60 is a dark, moderate blue. Relative luminance 0.019; OKLCH L 27.5% C 0.119 H 275.3°. Best body text is #FFFFFF at 15.30:1 contrast (WCAG AA passes).

Color values

HEX	#1B1B60
RGB	rgb(27, 27, 96)
HSL	hsl(240, 56%, 24%)
HSV	hsv(240, 72%, 38%)
CMYK	cmyk(71.9%, 71.9%, 0%, 62.4%)
CIE-LAB	lab(14.74, 24.71, -40.90)
CIE-LCH	lch(14.74, 47.78, 301.14°)
OKLab	oklab(27.53% 0.011 -0.1181)
OKLCH	oklch(27.53% 0.119 275.3)
XYZ	xyz(2.9546, 1.8611, 11.2676)
Luminance	0.0186 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1B60 #60601B

analogous

#1B3E60 #1B1B60 #3E1B60

triadic

#1B1B60 #601B1B #1B601B

tetradic

#1B1B60 #601B3E #60601B #1B603E

square

#1B1B60 #601B3E #60601B #1B603E

split-complementary

#1B1B60 #603E1B #3E601B

monochromatic

#070718 #0E0E30 #1B1B60 #282890 #3636C0

Accessibility & contrast

On white

15.30

#1B1B60 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.37

#1B1B60 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1B60

15.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1B60	#FFFFFF	#000000	##FFFFFF
##1B1B60	1.00	15.30	1.37	15.30
#FFFFFF	15.30	1.00	21.00	1.00
#000000	1.37	21.00	1.00	21.00
##FFFFFF	15.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002862

Deuteranopia (green-blind)

#00225F

Tritanopia (blue-blind)

#002D3B

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #1b1b60;
/* rgb */ color: rgb(27, 27, 96);
/* oklch */ color: oklch(27.5% 0.119 275.3);

Tailwind

colors: {
  custom: {
    50: '#62578e',
    500: '#1b1b60',
    950: '#000000',
  },
}

SCSS

$custom: #1b1b60;
$custom-light: #62578e;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1b60",
  "rgb": {
    "r": 27,
    "g": 27,
    "b": 96
  },
  "hsl": {
    "h": 240,
    "s": 56.098,
    "l": 24.118
  },
  "oklch": {
    "l": 0.27528,
    "c": 0.11859,
    "h": 275.3
  },
  "luminance": 0.01861
}

Semantic roles & 50–950 ramp

primary

#1B1B60

secondary

#969641

accent

#DF48DF

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#06030C

muted

#7A787D

Preview Lab

Preview with #1B1B60

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

Preview Lab → · Contrast checker → · Palette generator →