#151B5F#151B5F

#151B5F is a dark, moderate blue. Relative luminance 0.018; OKLCH L 27.0% C 0.119 H 271.6°. Best body text is #FFFFFF at 15.51:1 contrast (WCAG AA passes).

Color values

HEX	#151B5F
RGB	rgb(21, 27, 95)
HSL	hsl(235, 64%, 23%)
HSV	hsv(235, 78%, 37%)
CMYK	cmyk(77.9%, 71.6%, 0%, 62.7%)
CIE-LAB	lab(14.23, 23.51, -41.09)
CIE-LCH	lch(14.23, 47.34, 299.78°)
OKLab	oklab(27.01% 0.0034 -0.1188)
OKLCH	oklch(27.01% 0.119 271.6)
XYZ	xyz(2.7661, 1.7692, 11.0200)
Luminance	0.0177 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151B5F #5F5915

analogous

#15405F #151B5F #34155F

triadic

#151B5F #5F151B #1B5F15

tetradic

#151B5F #5F1540 #5F5915 #155F34

square

#151B5F #5F1540 #5F5915 #155F34

split-complementary

#151B5F #5F3415 #405F15

monochromatic

#060719 #0A0D2D #151B5F #202991 #2B37C3

Accessibility & contrast

On white

15.51

#151B5F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.35

#151B5F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151B5F

15.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151B5F	#FFFFFF	#000000	##FFFFFF
##151B5F	1.00	15.51	1.35	15.51
#FFFFFF	15.51	1.00	21.00	1.00
#000000	1.35	21.00	1.00	21.00
##FFFFFF	15.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002861

Deuteranopia (green-blind)

#00215E

Tritanopia (blue-blind)

#002D3A

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #151b5f;
/* rgb */ color: rgb(21, 27, 95);
/* oklch */ color: oklch(27.0% 0.119 271.6);

Tailwind

colors: {
  custom: {
    50: '#5f578d',
    500: '#151b5f',
    950: '#000000',
  },
}

SCSS

$custom: #151b5f;
$custom-light: #5f578d;
$custom-dark: #000000;

JSON

{
  "hex": "#151b5f",
  "rgb": {
    "r": 21,
    "g": 27,
    "b": 95
  },
  "hsl": {
    "h": 235.135,
    "s": 63.793,
    "l": 22.745
  },
  "oklch": {
    "l": 0.27014,
    "c": 0.11887,
    "h": 271.6
  },
  "luminance": 0.0177
}

Semantic roles & 50–950 ramp

primary

#151B5F

secondary

#968F3A

accent

#D941E7

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#05030C

muted

#7A787D

Preview Lab

Preview with #151B5F

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

Preview Lab → · Contrast checker → · Palette generator →