#151B5C#151B5C

#151B5C is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.7% C 0.114 H 271.8°. Best body text is #FFFFFF at 15.63:1 contrast (WCAG AA passes).

Color values

HEX	#151B5C
RGB	rgb(21, 27, 92)
HSL	hsl(235, 63%, 22%)
HSV	hsv(235, 77%, 36%)
CMYK	cmyk(77.2%, 70.7%, 0%, 63.9%)
CIE-LAB	lab(13.92, 22.32, -39.59)
CIE-LCH	lch(13.92, 45.45, 299.41°)
OKLab	oklab(26.7% 0.0037 -0.1144)
OKLCH	oklch(26.7% 0.114 271.8)
XYZ	xyz(2.6323, 1.7157, 10.3156)
Luminance	0.0172 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151B5C #5C5615

analogous

#153E5C #151B5C #33155C

triadic

#151B5C #5C151B #1B5C15

tetradic

#151B5C #5C153E #5C5615 #155C33

square

#151B5C #5C153E #5C5615 #155C33

split-complementary

#151B5C #5C3315 #3E5C15

monochromatic

#060719 #0A0C2A #151B5C #202A8E #2C38C0

Accessibility & contrast

On white

15.63

#151B5C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.34

#151B5C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151B5C

15.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151B5C	#FFFFFF	#000000	##FFFFFF
##151B5C	1.00	15.63	1.34	15.63
#FFFFFF	15.63	1.00	21.00	1.00
#000000	1.34	21.00	1.00	21.00
##FFFFFF	15.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00275E

Deuteranopia (green-blind)

#00205B

Tritanopia (blue-blind)

#002C38

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #151b5c;
/* rgb */ color: rgb(21, 27, 92);
/* oklch */ color: oklch(26.7% 0.114 271.8);

Tailwind

colors: {
  custom: {
    50: '#5f578b',
    500: '#151b5c',
    950: '#000000',
  },
}

SCSS

$custom: #151b5c;
$custom-light: #5f578b;
$custom-dark: #000000;

JSON

{
  "hex": "#151b5c",
  "rgb": {
    "r": 21,
    "g": 27,
    "b": 92
  },
  "hsl": {
    "h": 234.93,
    "s": 62.832,
    "l": 22.157
  },
  "oklch": {
    "l": 0.26696,
    "c": 0.11449,
    "h": 271.8
  },
  "luminance": 0.01716
}

Semantic roles & 50–950 ramp

primary

#151B5C

secondary

#938C39

accent

#D842E6

background

#F5F5F8

surface

#EAE9F0

border

#C6C5CB

text

#05030C

muted

#79787D

Preview Lab

Preview with #151B5C

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

Preview Lab → · Contrast checker → · Palette generator →