#151C51#151C51

#151C51 is a dark, moderate blue. Relative luminance 0.016; OKLCH L 25.8% C 0.096 H 272.0°. Best body text is #FFFFFF at 15.95:1 contrast (WCAG AA passes).

Color values

HEX	#151C51
RGB	rgb(21, 28, 81)
HSL	hsl(233, 59%, 20%)
HSV	hsv(233, 74%, 32%)
CMYK	cmyk(74.1%, 65.4%, 0%, 68.2%)
CIE-LAB	lab(13.13, 17.13, -33.44)
CIE-LCH	lch(13.13, 37.57, 297.12°)
OKLab	oklab(25.79% 0.0034 -0.0964)
OKLCH	oklch(25.79% 0.096 272)
XYZ	xyz(2.2092, 1.5838, 7.9723)
Luminance	0.0158 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.69

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151C51 #514A15

analogous

#153A51 #151C51 #2C1551

triadic

#151C51 #51151C #1C5115

tetradic

#151C51 #51153A #514A15 #15512C

square

#151C51 #51153A #514A15 #15512C

split-complementary

#151C51 #512C15 #3A5115

monochromatic

#060818 #080B20 #151C51 #222D82 #2E3EB2

Accessibility & contrast

On white

15.95

#151C51 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.32

#151C51 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151C51

15.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151C51	#FFFFFF	#000000	##FFFFFF
##151C51	1.00	15.95	1.32	15.95
#FFFFFF	15.95	1.00	21.00	1.00
#000000	1.32	21.00	1.00	21.00
##FFFFFF	15.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002553

Deuteranopia (green-blind)

#001F50

Tritanopia (blue-blind)

#002933

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #151c51;
/* rgb */ color: rgb(21, 28, 81);
/* oklch */ color: oklch(25.8% 0.096 272.0);

Tailwind

colors: {
  custom: {
    50: '#5b5882',
    500: '#151c51',
    950: '#000000',
  },
}

SCSS

$custom: #151c51;
$custom-light: #5b5882;
$custom-dark: #000000;

JSON

{
  "hex": "#151c51",
  "rgb": {
    "r": 21,
    "g": 28,
    "b": 81
  },
  "hsl": {
    "h": 233,
    "s": 58.824,
    "l": 20
  },
  "oklch": {
    "l": 0.25787,
    "c": 0.09646,
    "h": 272
  },
  "luminance": 0.01584
}

Semantic roles & 50–950 ramp

primary

#151C51

secondary

#897F39

accent

#D046E2

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#04030A

muted

#79787C

Preview Lab

Preview with #151C51

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

Preview Lab → · Contrast checker → · Palette generator →