#15397B#15397B

#15397B is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.1% C 0.120 H 261.2°. Best body text is #FFFFFF at 11.03:1 contrast (WCAG AA passes).

Color values

HEX	#15397B
RGB	rgb(21, 57, 123)
HSL	hsl(219, 71%, 28%)
HSV	hsv(219, 83%, 48%)
CMYK	cmyk(82.9%, 53.7%, 0%, 51.8%)
CIE-LAB	lab(25.31, 13.53, -41.18)
CIE-LCH	lch(25.31, 43.34, 288.19°)
OKLab	oklab(36.06% -0.0183 -0.1186)
OKLCH	oklch(36.06% 0.12 261.2)
XYZ	xyz(5.3462, 4.5151, 19.3248)
Luminance	0.0452 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#15397B #7B5715

analogous

#156C7B #15397B #24157B

triadic

#15397B #7B1539 #397B15

tetradic

#15397B #7B156C #7B5715 #157B24

square

#15397B #7B156C #7B5715 #157B24

split-complementary

#15397B #7B2415 #6C7B15

monochromatic

#040C1A #0C2147 #15397B #1E51AF #2F6CDB

Accessibility & contrast

On white

11.03

#15397B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#15397B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #15397B

11.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##15397B	#FFFFFF	#000000	##FFFFFF
##15397B	1.00	11.03	1.90	11.03
#FFFFFF	11.03	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C417D

Deuteranopia (green-blind)

#00387A

Tritanopia (blue-blind)

#004954

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #15397b;
/* rgb */ color: rgb(21, 57, 123);
/* oklch */ color: oklch(36.1% 0.120 261.2);

Tailwind

colors: {
  custom: {
    50: '#656ea2',
    500: '#15397b',
    950: '#000000',
  },
}

SCSS

$custom: #15397b;
$custom-light: #656ea2;
$custom-dark: #000000;

JSON

{
  "hex": "#15397b",
  "rgb": {
    "r": 21,
    "g": 57,
    "b": 123
  },
  "hsl": {
    "h": 218.824,
    "s": 70.833,
    "l": 28.235
  },
  "oklch": {
    "l": 0.36064,
    "c": 0.12002,
    "h": 261.2
  },
  "luminance": 0.04516
}

Semantic roles & 50–950 ramp

primary

#15397B

secondary

#B0873B

accent

#AE3AEE

background

#F6F6FA

surface

#EBEBF3

border

#C6C6CD

text

#06070F

muted

#7A7A7F

Preview Lab

Preview with #15397B

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

Preview Lab → · Contrast checker → · Palette generator →