#15178D#15178D

#15178D is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.8% C 0.183 H 269.1°. Best body text is #FFFFFF at 13.65:1 contrast (WCAG AA passes).

Color values

HEX	#15178D
RGB	rgb(21, 23, 141)
HSL	hsl(239, 74%, 32%)
HSV	hsv(239, 85%, 55%)
CMYK	cmyk(85.1%, 83.7%, 0%, 44.7%)
CIE-LAB	lab(18.78, 42.57, -63.20)
CIE-LCH	lch(18.78, 76.20, 303.96°)
OKLab	oklab(31.83% -0.003 -0.183)
OKLCH	oklch(31.83% 0.183 269.1)
XYZ	xyz(5.4217, 2.6947, 25.4285)
Luminance	0.0270 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#15178D #8D8B15

analogous

#15538D #15178D #4F158D

triadic

#15178D #8D1517 #178D15

tetradic

#15178D #8D1553 #8D8B15 #158D4F

square

#15178D #8D1553 #8D8B15 #158D4F

split-complementary

#15178D #8D4F15 #538D15

monochromatic

#050622 #0D0E58 #15178D #1D20C2 #3B3DE2

Accessibility & contrast

On white

13.65

#15178D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#15178D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #15178D

13.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##15178D	#FFFFFF	#000000	##FFFFFF
##15178D	1.00	13.65	1.54	13.65
#FFFFFF	13.65	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003490

Deuteranopia (green-blind)

#00278B

Tritanopia (blue-blind)

#003D53

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #15178d;
/* rgb */ color: rgb(21, 23, 141);
/* oklch */ color: oklch(31.8% 0.183 269.1);

Tailwind

colors: {
  custom: {
    50: '#6d57b0',
    500: '#15178d',
    950: '#000000',
  },
}

SCSS

$custom: #15178d;
$custom-light: #6d57b0;
$custom-dark: #000000;

JSON

{
  "hex": "#15178d",
  "rgb": {
    "r": 21,
    "g": 23,
    "b": 141
  },
  "hsl": {
    "h": 239,
    "s": 74.074,
    "l": 31.765
  },
  "oklch": {
    "l": 0.31827,
    "c": 0.18304,
    "h": 269.1
  },
  "luminance": 0.02695
}

Semantic roles & 50–950 ramp

primary

#15178D

secondary

#C1BF3D

accent

#EE37F1

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090311

muted

#7B7880

Preview Lab

Preview with #15178D

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

Preview Lab → · Contrast checker → · Palette generator →