#1B155F#1B155F

#1B155F is a dark, vivid blue. Relative luminance 0.016; OKLCH L 26.4% C 0.124 H 277.2°. Best body text is #FFFFFF at 15.92:1 contrast (WCAG AA passes).

Color values

HEX	#1B155F
RGB	rgb(27, 21, 95)
HSL	hsl(245, 64%, 23%)
HSV	hsv(245, 78%, 37%)
CMYK	cmyk(71.6%, 77.9%, 0%, 62.7%)
CIE-LAB	lab(13.20, 28.28, -42.76)
CIE-LCH	lch(13.20, 51.26, 303.48°)
OKLab	oklab(26.39% 0.0156 -0.1235)
OKLCH	oklch(26.39% 0.125 277.2)
XYZ	xyz(2.7850, 1.5953, 10.9854)
Luminance	0.0160 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B155F #595F15

analogous

#15345F #1B155F #40155F

triadic

#1B155F #5F1B15 #155F1B

tetradic

#1B155F #5F1534 #595F15 #155F40

square

#1B155F #5F1534 #595F15 #155F40

split-complementary

#1B155F #5F4015 #345F15

monochromatic

#070619 #0D0A2D #1B155F #292091 #372BC3

Accessibility & contrast

On white

15.92

#1B155F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.32

#1B155F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B155F

15.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B155F	#FFFFFF	#000000	##FFFFFF
##1B155F	1.00	15.92	1.32	15.92
#FFFFFF	15.92	1.00	21.00	1.00
#000000	1.32	21.00	1.00	21.00
##FFFFFF	15.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002561

Deuteranopia (green-blind)

#001F5E

Tritanopia (blue-blind)

#002A38

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #1b155f;
/* rgb */ color: rgb(27, 21, 95);
/* oklch */ color: oklch(26.4% 0.124 277.2);

Tailwind

colors: {
  custom: {
    50: '#63538d',
    500: '#1b155f',
    950: '#000000',
  },
}

SCSS

$custom: #1b155f;
$custom-light: #63538d;
$custom-dark: #000000;

JSON

{
  "hex": "#1b155f",
  "rgb": {
    "r": 27,
    "g": 21,
    "b": 95
  },
  "hsl": {
    "h": 244.865,
    "s": 63.793,
    "l": 22.745
  },
  "oklch": {
    "l": 0.26392,
    "c": 0.1245,
    "h": 277.2
  },
  "luminance": 0.01596
}

Semantic roles & 50–950 ramp

primary

#1B155F

secondary

#8F963A

accent

#E741D9

background

#F6F4F8

surface

#EBE7F0

border

#C6C3CB

text

#06020C

muted

#7A787D

Preview Lab

Preview with #1B155F

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

Preview Lab → · Contrast checker → · Palette generator →