#15397D#15397D

#15397D is a dark, vivid blue. Relative luminance 0.046; OKLCH L 36.2% C 0.123 H 261.6°. Best body text is #FFFFFF at 10.98:1 contrast (WCAG AA passes).

Color values

HEX	#15397D
RGB	rgb(21, 57, 125)
HSL	hsl(219, 71%, 29%)
HSV	hsv(219, 83%, 49%)
CMYK	cmyk(83.2%, 54.4%, 0%, 51%)
CIE-LAB	lab(25.46, 14.37, -42.19)
CIE-LCH	lch(25.46, 44.57, 288.81°)
OKLab	oklab(36.23% -0.018 -0.1216)
OKLCH	oklch(36.23% 0.123 261.6)
XYZ	xyz(5.4727, 4.5657, 19.9909)
Luminance	0.0457 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#15397D #7D5915

analogous

#156D7D #15397D #25157D

triadic

#15397D #7D1539 #397D15

tetradic

#15397D #7D156D #7D5915 #157D25

square

#15397D #7D156D #7D5915 #157D25

split-complementary

#15397D #7D2515 #6D7D15

monochromatic

#040C1A #0C2149 #15397D #1E51B1 #306CDC

Accessibility & contrast

On white

10.98

#15397D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#15397D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #15397D

10.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##15397D	#FFFFFF	#000000	##FFFFFF
##15397D	1.00	10.98	1.91	10.98
#FFFFFF	10.98	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	10.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#07417F

Deuteranopia (green-blind)

#00387C

Tritanopia (blue-blind)

#004A55

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #15397d;
/* rgb */ color: rgb(21, 57, 125);
/* oklch */ color: oklch(36.2% 0.123 261.6);

Tailwind

colors: {
  custom: {
    50: '#656ea3',
    500: '#15397d',
    950: '#000000',
  },
}

SCSS

$custom: #15397d;
$custom-light: #656ea3;
$custom-dark: #000000;

JSON

{
  "hex": "#15397d",
  "rgb": {
    "r": 21,
    "g": 57,
    "b": 125
  },
  "hsl": {
    "h": 219.231,
    "s": 71.233,
    "l": 28.627
  },
  "oklch": {
    "l": 0.3623,
    "c": 0.12293,
    "h": 261.6
  },
  "luminance": 0.04566
}

Semantic roles & 50–950 ramp

primary

#15397D

secondary

#B2893C

accent

#B03AEE

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #15397D

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

Preview Lab → · Contrast checker → · Palette generator →