#151C4F#151C4F

#151C4F is a dark, moderate blue. Relative luminance 0.016; OKLCH L 25.6% C 0.093 H 272.1°. Best body text is #FFFFFF at 16.02:1 contrast (WCAG AA passes).

Color values

HEX	#151C4F
RGB	rgb(21, 28, 79)
HSL	hsl(233, 58%, 20%)
HSV	hsv(233, 73%, 31%)
CMYK	cmyk(73.4%, 64.6%, 0%, 69%)
CIE-LAB	lab(12.95, 16.30, -32.37)
CIE-LCH	lch(12.95, 36.25, 296.73°)
OKLab	oklab(25.6% 0.0034 -0.0932)
OKLCH	oklch(25.6% 0.093 272.1)
XYZ	xyz(2.1353, 1.5543, 7.5831)
Luminance	0.0155 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151C4F #4F4815

analogous

#15394F #151C4F #2B154F

triadic

#151C4F #4F151C #1C4F15

tetradic

#151C4F #4F1539 #4F4815 #154F2B

square

#151C4F #4F1539 #4F4815 #154F2B

split-complementary

#151C4F #4F2B15 #394F15

monochromatic

#060918 #080B1F #151C4F #222D7F #2F3EB0

Accessibility & contrast

On white

16.02

#151C4F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.31

#151C4F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151C4F

16.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151C4F	#FFFFFF	#000000	##FFFFFF
##151C4F	1.00	16.02	1.31	16.02
#FFFFFF	16.02	1.00	21.00	1.00
#000000	1.31	21.00	1.00	21.00
##FFFFFF	16.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002451

Deuteranopia (green-blind)

#001F4E

Tritanopia (blue-blind)

#002932

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #151c4f;
/* rgb */ color: rgb(21, 28, 79);
/* oklch */ color: oklch(25.6% 0.093 272.1);

Tailwind

colors: {
  custom: {
    50: '#5b5781',
    500: '#151c4f',
    950: '#000000',
  },
}

SCSS

$custom: #151c4f;
$custom-light: #5b5781;
$custom-dark: #000000;

JSON

{
  "hex": "#151c4f",
  "rgb": {
    "r": 21,
    "g": 28,
    "b": 79
  },
  "hsl": {
    "h": 232.759,
    "s": 58,
    "l": 19.608
  },
  "oklch": {
    "l": 0.25595,
    "c": 0.09331,
    "h": 272.1
  },
  "luminance": 0.01554
}

Semantic roles & 50–950 ramp

primary

#151C4F

secondary

#877D39

accent

#CF47E1

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #151C4F

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

Preview Lab → · Contrast checker → · Palette generator →