#15237B#15237B

#15237B is a dark, vivid blue. Relative luminance 0.028; OKLCH L 31.5% C 0.148 H 268.5°. Best body text is #FFFFFF at 13.48:1 contrast (WCAG AA passes).

Color values

HEX	#15237B
RGB	rgb(21, 35, 123)
HSL	hsl(232, 71%, 28%)
HSV	hsv(232, 83%, 48%)
CMYK	cmyk(82.9%, 71.5%, 0%, 51.8%)
CIE-LAB	lab(19.19, 29.00, -51.17)
CIE-LCH	lch(19.19, 58.82, 299.55°)
OKLab	oklab(31.5% -0.004 -0.1482)
OKLCH	oklch(31.5% 0.148 268.5)
XYZ	xyz(4.4842, 2.7910, 19.0374)
Luminance	0.0279 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#15237B #7B6D15

analogous

#15567B #15237B #3A157B

triadic

#15237B #7B1523 #237B15

tetradic

#15237B #7B1556 #7B6D15 #157B3A

square

#15237B #7B1556 #7B6D15 #157B3A

split-complementary

#15237B #7B3A15 #567B15

monochromatic

#04071A #0C1447 #15237B #1E32AF #2F47DB

Accessibility & contrast

On white

13.48

#15237B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#15237B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #15237B

13.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##15237B	#FFFFFF	#000000	##FFFFFF
##15237B	1.00	13.48	1.56	13.48
#FFFFFF	13.48	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00347E

Deuteranopia (green-blind)

#002A79

Tritanopia (blue-blind)

#003B4C

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #15237b;
/* rgb */ color: rgb(21, 35, 123);
/* oklch */ color: oklch(31.5% 0.148 268.5);

Tailwind

colors: {
  custom: {
    50: '#675ea2',
    500: '#15237b',
    950: '#000000',
  },
}

SCSS

$custom: #15237b;
$custom-light: #675ea2;
$custom-dark: #000000;

JSON

{
  "hex": "#15237b",
  "rgb": {
    "r": 21,
    "g": 35,
    "b": 123
  },
  "hsl": {
    "h": 231.765,
    "s": 70.833,
    "l": 28.235
  },
  "oklch": {
    "l": 0.31503,
    "c": 0.14827,
    "h": 268.5
  },
  "luminance": 0.02792
}

Semantic roles & 50–950 ramp

primary

#15237B

secondary

#B0A03B

accent

#D53AEE

background

#F6F5FA

surface

#EBE9F4

border

#C6C5CE

text

#07040F

muted

#7A797F

Preview Lab

Preview with #15237B

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

Preview Lab → · Contrast checker → · Palette generator →