#151C5B#151C5B

#151C5B is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.8% C 0.112 H 271.5°. Best body text is #FFFFFF at 15.57:1 contrast (WCAG AA passes).

Color values

HEX	#151C5B
RGB	rgb(21, 28, 91)
HSL	hsl(234, 63%, 22%)
HSV	hsv(234, 77%, 36%)
CMYK	cmyk(76.9%, 69.2%, 0%, 64.3%)
CIE-LAB	lab(14.09, 21.20, -38.64)
CIE-LCH	lch(14.09, 44.08, 298.75°)
OKLab	oklab(26.79% 0.003 -0.1116)
OKLCH	oklch(26.79% 0.112 271.5)
XYZ	xyz(2.6122, 1.7450, 10.0947)
Luminance	0.0175 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151C5B #5B5415

analogous

#153F5B #151C5B #31155B

triadic

#151C5B #5B151C #1C5B15

tetradic

#151C5B #5B153F #5B5415 #155B31

square

#151C5B #5B153F #5B5415 #155B31

split-complementary

#151C5B #5B3115 #3F5B15

monochromatic

#060819 #0A0D29 #151C5B #202B8D #2C3BBE

Accessibility & contrast

On white

15.57

#151C5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.35

#151C5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151C5B

15.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151C5B	#FFFFFF	#000000	##FFFFFF
##151C5B	1.00	15.57	1.35	15.57
#FFFFFF	15.57	1.00	21.00	1.00
#000000	1.35	21.00	1.00	21.00
##FFFFFF	15.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00275D

Deuteranopia (green-blind)

#00215A

Tritanopia (blue-blind)

#002C38

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #151c5b;
/* rgb */ color: rgb(21, 28, 91);
/* oklch */ color: oklch(26.8% 0.112 271.5);

Tailwind

colors: {
  custom: {
    50: '#5e588a',
    500: '#151c5b',
    950: '#000000',
  },
}

SCSS

$custom: #151c5b;
$custom-light: #5e588a;
$custom-dark: #000000;

JSON

{
  "hex": "#151c5b",
  "rgb": {
    "r": 21,
    "g": 28,
    "b": 91
  },
  "hsl": {
    "h": 234,
    "s": 62.5,
    "l": 21.961
  },
  "oklch": {
    "l": 0.26789,
    "c": 0.11169,
    "h": 271.5
  },
  "luminance": 0.01745
}

Semantic roles & 50–950 ramp

primary

#151C5B

secondary

#928A39

accent

#D542E6

background

#F5F5F8

surface

#EAE9F0

border

#C6C5CB

text

#05030C

muted

#79787D

Preview Lab

Preview with #151C5B

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

Preview Lab → · Contrast checker → · Palette generator →