#153C7B#153C7B

#153C7B is a dark, moderate blue. Relative luminance 0.048; OKLCH L 36.8% C 0.116 H 259.7°. Best body text is #FFFFFF at 10.69:1 contrast (WCAG AA passes).

Color values

HEX#153C7B
RGBrgb(21, 60, 123)
HSLhsl(217, 71%, 28%)
HSVhsv(217, 83%, 48%)
CMYKcmyk(82.9%, 51.2%, 0%, 51.8%)
CIE-LABlab(26.22, 11.41, -39.71)
CIE-LCHlch(26.22, 41.31, 286.03°)
OKLaboklab(36.76% -0.0207 -0.1142)
OKLCHoklch(36.76% 0.116 259.7)
XYZxyz(5.4990, 4.8206, 19.3757)
Luminance0.0482 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#153C7B #7B5415
analogous
#156F7B #153C7B #21157B
triadic
#153C7B #7B153C #3C7B15
tetradic
#153C7B #7B156F #7B5415 #157B21
square
#153C7B #7B156F #7B5415 #157B21
split-complementary
#153C7B #7B2115 #6F7B15
monochromatic
#040D1A #0C2247 #153C7B #1E55AF #2F71DB

Accessibility & contrast

On white

10.69
#153C7B on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.96
#153C7B on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #153C7B
10.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##153C7B#FFFFFF#000000##FFFFFF
##153C7B1.0010.691.9610.69
#FFFFFF10.691.0021.001.00
#0000001.9621.001.0021.00
##FFFFFF10.691.0021.001.00

Color blindness preview

Protanopia (red-blind)
#16437D
Deuteranopia (green-blind)
#003A7A
Tritanopia (blue-blind)
#004B55
Achromatopsia (no color)
#3E3E3E

Design tokens & code

CSS
--color: #153c7b;
/* rgb */ color: rgb(21, 60, 123);
/* oklch */ color: oklch(36.8% 0.116 259.7);
Tailwind
colors: {
  custom: {
    50: '#6571a2',
    500: '#153c7b',
    950: '#000000',
  },
}
SCSS
$custom: #153c7b;
$custom-light: #6571a2;
$custom-dark: #000000;
JSON
{
  "hex": "#153c7b",
  "rgb": {
    "r": 21,
    "g": 60,
    "b": 123
  },
  "hsl": {
    "h": 217.059,
    "s": 70.833,
    "l": 28.235
  },
  "oklch": {
    "l": 0.36761,
    "c": 0.11608,
    "h": 259.7
  },
  "luminance": 0.04821
}

Semantic roles & 50–950 ramp

primary
#153C7B
secondary
#B0843B
accent
#A93AEE
background
#F6F6FA
surface
#EBECF3
border
#C6C7CD
text
#06070F
muted
#7A7A7F

Preview Lab

Preview with #153C7B

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

Preview Lab → · Contrast checker → · Palette generator →

#153C7B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva