#151B6F#151B6F

#151B6F is a dark, vivid blue. Relative luminance 0.021; OKLCH L 28.8% C 0.141 H 270.5°. Best body text is #FFFFFF at 14.81:1 contrast (WCAG AA passes).

Color values

HEX	#151B6F
RGB	rgb(21, 27, 111)
HSL	hsl(236, 68%, 26%)
HSV	hsv(236, 81%, 44%)
CMYK	cmyk(81.1%, 75.7%, 0%, 56.5%)
CIE-LAB	lab(15.96, 29.70, -48.77)
CIE-LCH	lch(15.96, 57.10, 301.34°)
OKLab	oklab(28.78% 0.0013 -0.1412)
OKLCH	oklch(28.78% 0.141 270.5)
XYZ	xyz(3.5695, 2.0906, 15.2512)
Luminance	0.0209 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151B6F #6F6915

analogous

#15486F #151B6F #3C156F

triadic

#151B6F #6F151B #1B6F15

tetradic

#151B6F #6F1548 #6F6915 #156F3C

square

#151B6F #6F1548 #6F6915 #156F3C

split-complementary

#151B6F #6F3C15 #486F15

monochromatic

#05061A #0B0E3C #151B6F #1F28A2 #2834D6

Accessibility & contrast

On white

14.81

#151B6F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.42

#151B6F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151B6F

14.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151B6F	#FFFFFF	#000000	##FFFFFF
##151B6F	1.00	14.81	1.42	14.81
#FFFFFF	14.81	1.00	21.00	1.00
#000000	1.42	21.00	1.00	21.00
##FFFFFF	14.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002C71

Deuteranopia (green-blind)

#00236D

Tritanopia (blue-blind)

#003343

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #151b6f;
/* rgb */ color: rgb(21, 27, 111);
/* oklch */ color: oklch(28.8% 0.141 270.5);

Tailwind

colors: {
  custom: {
    50: '#645899',
    500: '#151b6f',
    950: '#000000',
  },
}

SCSS

$custom: #151b6f;
$custom-light: #645899;
$custom-dark: #000000;

JSON

{
  "hex": "#151b6f",
  "rgb": {
    "r": 21,
    "g": 27,
    "b": 111
  },
  "hsl": {
    "h": 236,
    "s": 68.182,
    "l": 25.882
  },
  "oklch": {
    "l": 0.28783,
    "c": 0.14124,
    "h": 270.5
  },
  "luminance": 0.02091
}

Semantic roles & 50–950 ramp

primary

#151B6F

secondary

#A59E3A

accent

#DF3DEB

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06030E

muted

#7A787E

Preview Lab

Preview with #151B6F

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

Preview Lab → · Contrast checker → · Palette generator →