#151D51#151D51

#151D51 is a dark, moderate blue. Relative luminance 0.016; OKLCH L 26.0% C 0.095 H 271.5°. Best body text is #FFFFFF at 15.83:1 contrast (WCAG AA passes).

Color values

HEX	#151D51
RGB	rgb(21, 29, 81)
HSL	hsl(232, 59%, 20%)
HSV	hsv(232, 74%, 32%)
CMYK	cmyk(74.1%, 64.2%, 0%, 68.2%)
CIE-LAB	lab(13.42, 16.38, -32.97)
CIE-LCH	lch(13.42, 36.81, 296.43°)
OKLab	oklab(26% 0.0025 -0.095)
OKLCH	oklch(26% 0.095 271.5)
XYZ	xyz(2.2333, 1.6320, 7.9803)
Luminance	0.0163 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.89

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151D51 #514915

analogous

#153B51 #151D51 #2B1551

triadic

#151D51 #51151D #1D5115

tetradic

#151D51 #51153B #514915 #15512B

square

#151D51 #51153B #514915 #15512B

split-complementary

#151D51 #512B15 #3B5115

monochromatic

#060918 #080C20 #151D51 #222E82 #2E40B2

Accessibility & contrast

On white

15.83

#151D51 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.33

#151D51 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151D51

15.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151D51	#FFFFFF	#000000	##FFFFFF
##151D51	1.00	15.83	1.33	15.83
#FFFFFF	15.83	1.00	21.00	1.00
#000000	1.33	21.00	1.00	21.00
##FFFFFF	15.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002553

Deuteranopia (green-blind)

#002050

Tritanopia (blue-blind)

#002A33

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #151d51;
/* rgb */ color: rgb(21, 29, 81);
/* oklch */ color: oklch(26.0% 0.095 271.5);

Tailwind

colors: {
  custom: {
    50: '#5b5882',
    500: '#151d51',
    950: '#000000',
  },
}

SCSS

$custom: #151d51;
$custom-light: #5b5882;
$custom-dark: #000000;

JSON

{
  "hex": "#151d51",
  "rgb": {
    "r": 21,
    "g": 29,
    "b": 81
  },
  "hsl": {
    "h": 232,
    "s": 58.824,
    "l": 20
  },
  "oklch": {
    "l": 0.26004,
    "c": 0.09501,
    "h": 271.5
  },
  "luminance": 0.01632
}

Semantic roles & 50–950 ramp

primary

#151D51

secondary

#897E39

accent

#CD46E2

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#04030A

muted

#79787C

Preview Lab

Preview with #151D51

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

Preview Lab → · Contrast checker → · Palette generator →