#153D7B#153D7B

#153D7B is a dark, moderate blue. Relative luminance 0.049; OKLCH L 37.0% C 0.115 H 259.2°. Best body text is #FFFFFF at 10.58:1 contrast (WCAG AA passes).

Color values

HEX#153D7B
RGBrgb(21, 61, 123)
HSLhsl(216, 71%, 28%)
HSVhsv(216, 83%, 48%)
CMYKcmyk(82.9%, 50.4%, 0%, 51.8%)
CIE-LABlab(26.52, 10.71, -39.21)
CIE-LCHlch(26.52, 40.65, 285.27°)
OKLaboklab(37% -0.0215 -0.1127)
OKLCHoklch(37% 0.115 259.2)
XYZxyz(5.5518, 4.9263, 19.3933)
Luminance0.0493 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#153D7B #7B5315
analogous
#15707B #153D7B #20157B
triadic
#153D7B #7B153D #3D7B15
tetradic
#153D7B #7B1570 #7B5315 #157B20
square
#153D7B #7B1570 #7B5315 #157B20
split-complementary
#153D7B #7B2015 #707B15
monochromatic
#040D1A #0C2347 #153D7B #1E57AF #2F73DB

Accessibility & contrast

On white

10.58
#153D7B on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.99
#153D7B on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #153D7B
10.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##153D7B#FFFFFF#000000##FFFFFF
##153D7B1.0010.581.9910.58
#FFFFFF10.581.0021.001.00
#0000001.9921.001.0021.00
##FFFFFF10.581.0021.001.00

Color blindness preview

Protanopia (red-blind)
#19447D
Deuteranopia (green-blind)
#003A7A
Tritanopia (blue-blind)
#004C56
Achromatopsia (no color)
#3F3F3F

Design tokens & code

CSS
--color: #153d7b;
/* rgb */ color: rgb(21, 61, 123);
/* oklch */ color: oklch(37.0% 0.115 259.2);
Tailwind
colors: {
  custom: {
    50: '#6571a2',
    500: '#153d7b',
    950: '#000000',
  },
}
SCSS
$custom: #153d7b;
$custom-light: #6571a2;
$custom-dark: #000000;
JSON
{
  "hex": "#153d7b",
  "rgb": {
    "r": 21,
    "g": 61,
    "b": 123
  },
  "hsl": {
    "h": 216.471,
    "s": 70.833,
    "l": 28.235
  },
  "oklch": {
    "l": 0.36996,
    "c": 0.11478,
    "h": 259.2
  },
  "luminance": 0.04927
}

Semantic roles & 50–950 ramp

primary
#153D7B
secondary
#B0833B
accent
#A73AEE
background
#F6F6FA
surface
#EBECF3
border
#C6C7CD
text
#06070F
muted
#7A7A7F

Preview Lab

Preview with #153D7B

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

Preview Lab → · Contrast checker → · Palette generator →

#153D7B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva