#15297B#15297B

#15297B is a dark, vivid blue. Relative luminance 0.032; OKLCH L 32.6% C 0.141 H 267.1°. Best body text is #FFFFFF at 12.84:1 contrast (WCAG AA passes).

Color values

HEX	#15297B
RGB	rgb(21, 41, 123)
HSL	hsl(228, 71%, 28%)
HSV	hsv(228, 83%, 48%)
CMYK	cmyk(82.9%, 66.7%, 0%, 51.8%)
CIE-LAB	lab(20.73, 24.89, -48.63)
CIE-LCH	lch(20.73, 54.63, 297.10°)
OKLab	oklab(32.63% -0.0072 -0.1408)
OKLCH	oklch(32.63% 0.141 267.1)
XYZ	xyz(4.6761, 3.1748, 19.1014)
Luminance	0.0318 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#15297B #7B6715

analogous

#155C7B #15297B #34157B

triadic

#15297B #7B1529 #297B15

tetradic

#15297B #7B155C #7B6715 #157B34

square

#15297B #7B155C #7B6715 #157B34

split-complementary

#15297B #7B3415 #5C7B15

monochromatic

#04091A #0C1847 #15297B #1E3AAF #2F51DB

Accessibility & contrast

On white

12.84

#15297B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#15297B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #15297B

12.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##15297B	#FFFFFF	#000000	##FFFFFF
##15297B	1.00	12.84	1.64	12.84
#FFFFFF	12.84	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00377E

Deuteranopia (green-blind)

#002D79

Tritanopia (blue-blind)

#003F4E

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #15297b;
/* rgb */ color: rgb(21, 41, 123);
/* oklch */ color: oklch(32.6% 0.141 267.1);

Tailwind

colors: {
  custom: {
    50: '#6662a2',
    500: '#15297b',
    950: '#000000',
  },
}

SCSS

$custom: #15297b;
$custom-light: #6662a2;
$custom-dark: #000000;

JSON

{
  "hex": "#15297b",
  "rgb": {
    "r": 21,
    "g": 41,
    "b": 123
  },
  "hsl": {
    "h": 228.235,
    "s": 70.833,
    "l": 28.235
  },
  "oklch": {
    "l": 0.32631,
    "c": 0.14095,
    "h": 267.1
  },
  "luminance": 0.03175
}

Semantic roles & 50–950 ramp

primary

#15297B

secondary

#B0993B

accent

#CA3AEE

background

#F6F5FA

surface

#EBEAF4

border

#C6C6CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #15297B

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

Preview Lab → · Contrast checker → · Palette generator →