#151D4E#151D4E

#151D4E is a dark, moderate blue. Relative luminance 0.016; OKLCH L 25.7% C 0.090 H 271.5°. Best body text is #FFFFFF at 15.94:1 contrast (WCAG AA passes).

Color values

HEX	#151D4E
RGB	rgb(21, 29, 78)
HSL	hsl(232, 58%, 19%)
HSV	hsv(232, 73%, 31%)
CMYK	cmyk(73.1%, 62.8%, 0%, 69.4%)
CIE-LAB	lab(13.16, 15.14, -31.35)
CIE-LCH	lch(13.16, 34.82, 295.78°)
OKLab	oklab(25.72% 0.0024 -0.0902)
OKLCH	oklch(25.72% 0.09 271.5)
XYZ	xyz(2.1233, 1.5880, 7.4009)
Luminance	0.0159 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.70

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151D4E #4E4615

analogous

#153A4E #151D4E #2A154E

triadic

#151D4E #4E151D #1D4E15

tetradic

#151D4E #4E153A #4E4615 #154E2A

square

#151D4E #4E153A #4E4615 #154E2A

split-complementary

#151D4E #4E2A15 #3A4E15

monochromatic

#060918 #080B1E #151D4E #222F7E #2F41AE

Accessibility & contrast

On white

15.94

#151D4E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.32

#151D4E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151D4E

15.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151D4E	#FFFFFF	#000000	##FFFFFF
##151D4E	1.00	15.94	1.32	15.94
#FFFFFF	15.94	1.00	21.00	1.00
#000000	1.32	21.00	1.00	21.00
##FFFFFF	15.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002550

Deuteranopia (green-blind)

#001F4D

Tritanopia (blue-blind)

#002932

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #151d4e;
/* rgb */ color: rgb(21, 29, 78);
/* oklch */ color: oklch(25.7% 0.090 271.5);

Tailwind

colors: {
  custom: {
    50: '#5b5880',
    500: '#151d4e',
    950: '#000000',
  },
}

SCSS

$custom: #151d4e;
$custom-light: #5b5880;
$custom-dark: #000000;

JSON

{
  "hex": "#151d4e",
  "rgb": {
    "r": 21,
    "g": 29,
    "b": 78
  },
  "hsl": {
    "h": 231.579,
    "s": 57.576,
    "l": 19.412
  },
  "oklch": {
    "l": 0.25722,
    "c": 0.09026,
    "h": 271.5
  },
  "luminance": 0.01588
}

Semantic roles & 50–950 ramp

primary

#151D4E

secondary

#867B39

accent

#CB47E1

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #151D4E

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

Preview Lab → · Contrast checker → · Palette generator →