#15377B#15377B

#15377B is a dark, vivid blue. Relative luminance 0.043; OKLCH L 35.6% C 0.123 H 262.2°. Best body text is #FFFFFF at 11.26:1 contrast (WCAG AA passes).

Color values

HEX#15377B
RGBrgb(21, 55, 123)
HSLhsl(220, 71%, 28%)
HSVhsv(220, 83%, 48%)
CMYKcmyk(82.9%, 55.3%, 0%, 51.8%)
CIE-LABlab(24.71, 14.95, -42.15)
CIE-LCHlch(24.71, 44.72, 289.53°)
OKLaboklab(35.61% -0.0167 -0.1215)
OKLCHoklch(35.61% 0.123 262.2)
XYZxyz(5.2493, 4.3212, 19.2925)
Luminance0.0432 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#15377B #7B5915
analogous
#156A7B #15377B #26157B
triadic
#15377B #7B1537 #377B15
tetradic
#15377B #7B156A #7B5915 #157B26
square
#15377B #7B156A #7B5915 #157B26
split-complementary
#15377B #7B2615 #6A7B15
monochromatic
#040C1A #0C2047 #15377B #1E4EAF #2F68DB

Accessibility & contrast

On white

11.26
#15377B on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.86
#15377B on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #15377B
11.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##15377B#FFFFFF#000000##FFFFFF
##15377B1.0011.261.8611.26
#FFFFFF11.261.0021.001.00
#0000001.8621.001.0021.00
##FFFFFF11.261.0021.001.00

Color blindness preview

Protanopia (red-blind)
#03407D
Deuteranopia (green-blind)
#00367A
Tritanopia (blue-blind)
#004853
Achromatopsia (no color)
#3B3B3B

Design tokens & code

CSS
--color: #15377b;
/* rgb */ color: rgb(21, 55, 123);
/* oklch */ color: oklch(35.6% 0.123 262.2);
Tailwind
colors: {
  custom: {
    50: '#656da2',
    500: '#15377b',
    950: '#000000',
  },
}
SCSS
$custom: #15377b;
$custom-light: #656da2;
$custom-dark: #000000;
JSON
{
  "hex": "#15377b",
  "rgb": {
    "r": 21,
    "g": 55,
    "b": 123
  },
  "hsl": {
    "h": 220,
    "s": 70.833,
    "l": 28.235
  },
  "oklch": {
    "l": 0.35608,
    "c": 0.12266,
    "h": 262.2
  },
  "luminance": 0.04322
}

Semantic roles & 50–950 ramp

primary
#15377B
secondary
#B0893B
accent
#B23AEE
background
#F6F6FA
surface
#EBEBF3
border
#C6C6CD
text
#06070F
muted
#7A7A7F

Preview Lab

Preview with #15377B

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

Preview Lab → · Contrast checker → · Palette generator →

#15377B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva