#15257A#15257A

#15257A is a dark, vivid blue. Relative luminance 0.029; OKLCH L 31.8% C 0.145 H 268.0°. Best body text is #FFFFFF at 13.31:1 contrast (WCAG AA passes).

Color values

HEX	#15257A
RGB	rgb(21, 37, 122)
HSL	hsl(230, 71%, 28%)
HSV	hsv(230, 83%, 48%)
CMYK	cmyk(82.8%, 69.7%, 0%, 52.2%)
CIE-LAB	lab(19.59, 27.26, -49.87)
CIE-LCH	lch(19.59, 56.84, 298.66°)
OKLab	oklab(31.76% -0.005 -0.1444)
OKLCH	oklch(31.76% 0.145 268)
XYZ	xyz(4.4825, 2.8872, 18.7296)
Luminance	0.0289 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#15257A #7A6A15

analogous

#15577A #15257A #37157A

triadic

#15257A #7A1525 #257A15

tetradic

#15257A #7A1557 #7A6A15 #157A37

square

#15257A #7A1557 #7A6A15 #157A37

split-complementary

#15257A #7A3715 #577A15

monochromatic

#04081A #0C1546 #15257A #1E35AE #2E4ADB

Accessibility & contrast

On white

13.31

#15257A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#15257A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #15257A

13.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##15257A	#FFFFFF	#000000	##FFFFFF
##15257A	1.00	13.31	1.58	13.31
#FFFFFF	13.31	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00347D

Deuteranopia (green-blind)

#002B78

Tritanopia (blue-blind)

#003C4C

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #15257a;
/* rgb */ color: rgb(21, 37, 122);
/* oklch */ color: oklch(31.8% 0.145 268.0);

Tailwind

colors: {
  custom: {
    50: '#665fa1',
    500: '#15257a',
    950: '#000000',
  },
}

SCSS

$custom: #15257a;
$custom-light: #665fa1;
$custom-dark: #000000;

JSON

{
  "hex": "#15257a",
  "rgb": {
    "r": 21,
    "g": 37,
    "b": 122
  },
  "hsl": {
    "h": 230.495,
    "s": 70.629,
    "l": 28.039
  },
  "oklch": {
    "l": 0.31762,
    "c": 0.14451,
    "h": 268
  },
  "luminance": 0.02888
}

Semantic roles & 50–950 ramp

primary

#15257A

secondary

#AF9D3B

accent

#D13AED

background

#F6F5FA

surface

#EBE9F3

border

#C6C5CD

text

#07040F

muted

#7A797F

Preview Lab

Preview with #15257A

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

Preview Lab → · Contrast checker → · Palette generator →