#15399E#15399E

#15399E is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.2% C 0.169 H 264.5°. Best body text is #FFFFFF at 9.95:1 contrast (WCAG AA passes).

Color values

HEX	#15399E
RGB	rgb(21, 57, 158)
HSL	hsl(224, 77%, 35%)
HSV	hsv(224, 87%, 62%)
CMYK	cmyk(86.7%, 63.9%, 0%, 38%)
CIE-LAB	lab(28.26, 27.83, -58.03)
CIE-LCH	lch(28.26, 64.36, 295.62°)
OKLab	oklab(39.2% -0.0162 -0.1681)
OKLCH	oklch(39.2% 0.169 264.5)
XYZ	xyz(7.9418, 5.5533, 32.9944)
Luminance	0.0555 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#15399E #9E7A15

analogous

#157D9E #15399E #36159E

triadic

#15399E #9E1539 #399E15

tetradic

#15399E #9E157D #9E7A15 #159E36

square

#15399E #9E157D #9E7A15 #159E36

split-complementary

#15399E #9E3615 #7D9E15

monochromatic

#071232 #0E2668 #15399E #1C4CD4 #4771E7

Accessibility & contrast

On white

9.95

#15399E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#15399E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #15399E

9.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##15399E	#FFFFFF	#000000	##FFFFFF
##15399E	1.00	9.95	2.11	9.95
#FFFFFF	9.95	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049A1

Deuteranopia (green-blind)

#003C9C

Tritanopia (blue-blind)

#005466

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #15399e;
/* rgb */ color: rgb(21, 57, 158);
/* oklch */ color: oklch(39.2% 0.169 264.5);

Tailwind

colors: {
  custom: {
    50: '#6e6fbc',
    500: '#15399e',
    950: '#000000',
  },
}

SCSS

$custom: #15399e;
$custom-light: #6e6fbc;
$custom-dark: #000000;

JSON

{
  "hex": "#15399e",
  "rgb": {
    "r": 21,
    "g": 57,
    "b": 158
  },
  "hsl": {
    "h": 224.234,
    "s": 76.536,
    "l": 35.098
  },
  "oklch": {
    "l": 0.39201,
    "c": 0.16887,
    "h": 264.5
  },
  "luminance": 0.05554
}

Semantic roles & 50–950 ramp

primary

#15399E

secondary

#C7A647

accent

#C135F3

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #15399E

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

Preview Lab → · Contrast checker → · Palette generator →