#15378E#15378E

#15378E is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.3% C 0.150 H 264.1°. Best body text is #FFFFFF at 10.67:1 contrast (WCAG AA passes).

Color values

HEX	#15378E
RGB	rgb(21, 55, 142)
HSL	hsl(223, 74%, 32%)
HSV	hsv(223, 85%, 56%)
CMYK	cmyk(85.2%, 61.3%, 0%, 44.3%)
CIE-LAB	lab(26.29, 22.79, -51.45)
CIE-LCH	lch(26.29, 56.27, 293.89°)
OKLab	oklab(37.29% -0.0154 -0.1488)
OKLCH	oklch(37.29% 0.15 264.1)
XYZ	xyz(6.5562, 4.8440, 26.1754)
Luminance	0.0485 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#15378E #8E6C15

analogous

#15748E #15378E #2F158E

triadic

#15378E #8E1537 #378E15

tetradic

#15378E #8E1574 #8E6C15 #158E2F

square

#15378E #8E1574 #8E6C15 #158E2F

split-complementary

#15378E #8E2F15 #748E15

monochromatic

#050E23 #0D2259 #15378E #1D4CC3 #3B6AE2

Accessibility & contrast

On white

10.67

#15378E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#15378E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #15378E

10.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##15378E	#FFFFFF	#000000	##FFFFFF
##15378E	1.00	10.67	1.97	10.67
#FFFFFF	10.67	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004491

Deuteranopia (green-blind)

#00398C

Tritanopia (blue-blind)

#004D5D

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #15378e;
/* rgb */ color: rgb(21, 55, 142);
/* oklch */ color: oklch(37.3% 0.150 264.1);

Tailwind

colors: {
  custom: {
    50: '#6a6db0',
    500: '#15378e',
    950: '#000000',
  },
}

SCSS

$custom: #15378e;
$custom-light: #6a6db0;
$custom-dark: #000000;

JSON

{
  "hex": "#15378e",
  "rgb": {
    "r": 21,
    "g": 55,
    "b": 142
  },
  "hsl": {
    "h": 223.14,
    "s": 74.233,
    "l": 31.961
  },
  "oklch": {
    "l": 0.37292,
    "c": 0.14964,
    "h": 264.1
  },
  "luminance": 0.04845
}

Semantic roles & 50–950 ramp

primary

#15378E

secondary

#C29C3D

accent

#BD37F1

background

#F6F6FA

surface

#ECEBF5

border

#C7C6CF

text

#080711

muted

#7A7A80

Preview Lab

Preview with #15378E

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

Preview Lab → · Contrast checker → · Palette generator →