#15337C#15337C

#15337C is a dark, vivid blue. Relative luminance 0.040; OKLCH L 34.8% C 0.129 H 263.9°. Best body text is #FFFFFF at 11.69:1 contrast (WCAG AA passes).

Color values

HEX	#15337C
RGB	rgb(21, 51, 124)
HSL	hsl(223, 71%, 28%)
HSV	hsv(223, 83%, 49%)
CMYK	cmyk(83.1%, 58.9%, 0%, 51.4%)
CIE-LAB	lab(23.61, 18.22, -44.56)
CIE-LCH	lch(23.61, 48.14, 292.24°)
OKLab	oklab(34.81% -0.0136 -0.1287)
OKLCH	oklch(34.81% 0.129 263.9)
XYZ	xyz(5.1299, 3.9817, 19.5631)
Luminance	0.0398 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#15337C #7C5E15

analogous

#15667C #15337C #2A157C

triadic

#15337C #7C1533 #337C15

tetradic

#15337C #7C1566 #7C5E15 #157C2A

square

#15337C #7C1566 #7C5E15 #157C2A

split-complementary

#15337C #7C2A15 #667C15

monochromatic

#040B1A #0C1D48 #15337C #1E49B0 #3062DC

Accessibility & contrast

On white

11.69

#15337C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#15337C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #15337C

11.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##15337C	#FFFFFF	#000000	##FFFFFF
##15337C	1.00	11.69	1.80	11.69
#FFFFFF	11.69	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D7E

Deuteranopia (green-blind)

#00347B

Tritanopia (blue-blind)

#004552

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #15337c;
/* rgb */ color: rgb(21, 51, 124);
/* oklch */ color: oklch(34.8% 0.129 263.9);

Tailwind

colors: {
  custom: {
    50: '#656aa3',
    500: '#15337c',
    950: '#000000',
  },
}

SCSS

$custom: #15337c;
$custom-light: #656aa3;
$custom-dark: #000000;

JSON

{
  "hex": "#15337c",
  "rgb": {
    "r": 21,
    "g": 51,
    "b": 124
  },
  "hsl": {
    "h": 222.524,
    "s": 71.034,
    "l": 28.431
  },
  "oklch": {
    "l": 0.34805,
    "c": 0.12941,
    "h": 263.9
  },
  "luminance": 0.03982
}

Semantic roles & 50–950 ramp

primary

#15337C

secondary

#B18F3C

accent

#B93AEE

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #15337C

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

Preview Lab → · Contrast checker → · Palette generator →