#151B53#151B53

#151B53 is a dark, moderate blue. Relative luminance 0.016; OKLCH L 25.8% C 0.101 H 272.4°. Best body text is #FFFFFF at 15.99:1 contrast (WCAG AA passes).

Color values

HEX	#151B53
RGB	rgb(21, 27, 83)
HSL	hsl(234, 60%, 20%)
HSV	hsv(234, 75%, 33%)
CMYK	cmyk(74.7%, 67.5%, 0%, 67.5%)
CIE-LAB	lab(13.03, 18.68, -34.97)
CIE-LCH	lch(13.03, 39.65, 298.12°)
OKLab	oklab(25.77% 0.0043 -0.1009)
OKLCH	oklch(25.77% 0.101 272.4)
XYZ	xyz(2.2620, 1.5676, 8.3653)
Luminance	0.0157 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151B53 #534D15

analogous

#153A53 #151B53 #2E1553

triadic

#151B53 #53151B #1B5315

tetradic

#151B53 #53153A #534D15 #15532E

square

#151B53 #53153A #534D15 #15532E

split-complementary

#151B53 #532E15 #3A5315

monochromatic

#060818 #090B22 #151B53 #212B84 #2E3BB5

Accessibility & contrast

On white

15.99

#151B53 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.31

#151B53 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151B53

15.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151B53	#FFFFFF	#000000	##FFFFFF
##151B53	1.00	15.99	1.31	15.99
#FFFFFF	15.99	1.00	21.00	1.00
#000000	1.31	21.00	1.00	21.00
##FFFFFF	15.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002455

Deuteranopia (green-blind)

#001F52

Tritanopia (blue-blind)

#002934

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #151b53;
/* rgb */ color: rgb(21, 27, 83);
/* oklch */ color: oklch(25.8% 0.101 272.4);

Tailwind

colors: {
  custom: {
    50: '#5c5784',
    500: '#151b53',
    950: '#000000',
  },
}

SCSS

$custom: #151b53;
$custom-light: #5c5784;
$custom-dark: #000000;

JSON

{
  "hex": "#151b53",
  "rgb": {
    "r": 21,
    "g": 27,
    "b": 83
  },
  "hsl": {
    "h": 234.194,
    "s": 59.615,
    "l": 20.392
  },
  "oklch": {
    "l": 0.25772,
    "c": 0.10097,
    "h": 272.4
  },
  "luminance": 0.01568
}

Semantic roles & 50–950 ramp

primary

#151B53

secondary

#8B8339

accent

#D445E3

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#04030B

muted

#79787C

Preview Lab

Preview with #151B53

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

Preview Lab → · Contrast checker → · Palette generator →