#15387B#15387B

#15387B is a dark, vivid blue. Relative luminance 0.044; OKLCH L 35.8% C 0.121 H 261.7°. Best body text is #FFFFFF at 11.15:1 contrast (WCAG AA passes).

Color values

HEX	#15387B
RGB	rgb(21, 56, 123)
HSL	hsl(219, 71%, 28%)
HSV	hsv(219, 83%, 48%)
CMYK	cmyk(82.9%, 54.5%, 0%, 51.8%)
CIE-LAB	lab(25.01, 14.24, -41.66)
CIE-LCH	lch(25.01, 44.03, 288.87°)
OKLab	oklab(35.84% -0.0175 -0.1201)
OKLCH	oklch(35.84% 0.121 261.7)
XYZ	xyz(5.2973, 4.4172, 19.3085)
Luminance	0.0442 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#15387B #7B5815

analogous

#156B7B #15387B #25157B

triadic

#15387B #7B1538 #387B15

tetradic

#15387B #7B156B #7B5815 #157B25

square

#15387B #7B156B #7B5815 #157B25

split-complementary

#15387B #7B2515 #6B7B15

monochromatic

#040C1A #0C2047 #15387B #1E50AF #2F6ADB

Accessibility & contrast

On white

11.15

#15387B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#15387B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #15387B

11.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##15387B	#FFFFFF	#000000	##FFFFFF
##15387B	1.00	11.15	1.88	11.15
#FFFFFF	11.15	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#07407D

Deuteranopia (green-blind)

#00377A

Tritanopia (blue-blind)

#004853

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #15387b;
/* rgb */ color: rgb(21, 56, 123);
/* oklch */ color: oklch(35.8% 0.121 261.7);

Tailwind

colors: {
  custom: {
    50: '#656ea2',
    500: '#15387b',
    950: '#000000',
  },
}

SCSS

$custom: #15387b;
$custom-light: #656ea2;
$custom-dark: #000000;

JSON

{
  "hex": "#15387b",
  "rgb": {
    "r": 21,
    "g": 56,
    "b": 123
  },
  "hsl": {
    "h": 219.412,
    "s": 70.833,
    "l": 28.235
  },
  "oklch": {
    "l": 0.35835,
    "c": 0.12134,
    "h": 261.7
  },
  "luminance": 0.04418
}

Semantic roles & 50–950 ramp

primary

#15387B

secondary

#B0883B

accent

#B03AEE

background

#F6F6FA

surface

#EBEBF3

border

#C6C6CD

text

#06070F

muted

#7A7A7F

Preview Lab

Preview with #15387B

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

Preview Lab → · Contrast checker → · Palette generator →