#151B58#151B58

#151B58 is a dark, moderate blue. Relative luminance 0.016; OKLCH L 26.3% C 0.109 H 272.1°. Best body text is #FFFFFF at 15.79:1 contrast (WCAG AA passes).

Color values

HEX	#151B58
RGB	rgb(21, 27, 88)
HSL	hsl(235, 61%, 21%)
HSV	hsv(235, 76%, 35%)
CMYK	cmyk(76.1%, 69.3%, 0%, 65.5%)
CIE-LAB	lab(13.52, 20.71, -37.56)
CIE-LCH	lch(13.52, 42.89, 298.87°)
OKLab	oklab(26.28% 0.004 -0.1085)
OKLCH	oklch(26.28% 0.109 272.1)
XYZ	xyz(2.4621, 1.6476, 9.4189)
Luminance	0.0165 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151B58 #585215

analogous

#153D58 #151B58 #311558

triadic

#151B58 #58151B #1B5815

tetradic

#151B58 #58153D #585215 #155831

square

#151B58 #58153D #585215 #155831

split-complementary

#151B58 #583115 #3D5815

monochromatic

#060819 #090C27 #151B58 #212A89 #2D39BB

Accessibility & contrast

On white

15.79

#151B58 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.33

#151B58 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151B58

15.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151B58	#FFFFFF	#000000	##FFFFFF
##151B58	1.00	15.79	1.33	15.79
#FFFFFF	15.79	1.00	21.00	1.00
#000000	1.33	21.00	1.00	21.00
##FFFFFF	15.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00265A

Deuteranopia (green-blind)

#002057

Tritanopia (blue-blind)

#002B36

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #151b58;
/* rgb */ color: rgb(21, 27, 88);
/* oklch */ color: oklch(26.3% 0.109 272.1);

Tailwind

colors: {
  custom: {
    50: '#5e5788',
    500: '#151b58',
    950: '#000000',
  },
}

SCSS

$custom: #151b58;
$custom-light: #5e5788;
$custom-dark: #000000;

JSON

{
  "hex": "#151b58",
  "rgb": {
    "r": 21,
    "g": 27,
    "b": 88
  },
  "hsl": {
    "h": 234.627,
    "s": 61.468,
    "l": 21.373
  },
  "oklch": {
    "l": 0.26279,
    "c": 0.10855,
    "h": 272.1
  },
  "luminance": 0.01648
}

Semantic roles & 50–950 ramp

primary

#151B58

secondary

#908839

accent

#D643E5

background

#F5F5F8

surface

#EAE9F0

border

#C6C5CB

text

#05030B

muted

#79787C

Preview Lab

Preview with #151B58

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

Preview Lab → · Contrast checker → · Palette generator →