#155A7E#155A7E

#155A7E is a dark, moderate cyan. Relative luminance 0.090; OKLCH L 44.4% C 0.088 H 237.2°. Best body text is #FFFFFF at 7.51:1 contrast (WCAG AA passes).

Color values

HEX#155A7E
RGBrgb(21, 90, 126)
HSLhsl(201, 71%, 29%)
HSVhsv(201, 83%, 49%)
CMYKcmyk(83.3%, 28.6%, 0%, 50.6%)
CIE-LABlab(35.94, -7.25, -26.11)
CIE-LCHlch(35.94, 27.10, 254.47°)
OKLaboklab(44.43% -0.0476 -0.0738)
OKLCHoklch(44.43% 0.088 237.2)
XYZxyz(7.7298, 8.9772, 21.0600)
Luminance0.0898 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#155A7E #7E3915
analogous
#157E6E #155A7E #15267E
triadic
#155A7E #7E155A #5A7E15
tetradic
#155A7E #6E157E #7E3915 #267E15
square
#155A7E #6E157E #7E3915 #267E15
split-complementary
#155A7E #7E1526 #7E6E15
monochromatic
#04131A #0C354A #155A7E #1E7FB2 #31A2DD

Accessibility & contrast

On white

7.51
#155A7E on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.80
#155A7E on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #155A7E
7.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##155A7E#FFFFFF#000000##FFFFFF
##155A7E1.007.512.807.51
#FFFFFF7.511.0021.001.00
#0000002.8021.001.0021.00
##FFFFFF7.511.0021.001.00

Color blindness preview

Protanopia (red-blind)
#495A80
Deuteranopia (green-blind)
#3B507D
Tritanopia (blue-blind)
#006366
Achromatopsia (no color)
#555555

Design tokens & code

CSS
--color: #155a7e;
/* rgb */ color: rgb(21, 90, 126);
/* oklch */ color: oklch(44.4% 0.088 237.2);
Tailwind
colors: {
  custom: {
    50: '#6588a3',
    500: '#155a7e',
    950: '#000000',
  },
}
SCSS
$custom: #155a7e;
$custom-light: #6588a3;
$custom-dark: #000000;
JSON
{
  "hex": "#155a7e",
  "rgb": {
    "r": 21,
    "g": 90,
    "b": 126
  },
  "hsl": {
    "h": 200.571,
    "s": 71.429,
    "l": 28.824
  },
  "oklch": {
    "l": 0.44428,
    "c": 0.08786,
    "h": 237.2
  },
  "luminance": 0.08978
}

Semantic roles & 50–950 ramp

primary
#155A7E
secondary
#B3653C
accent
#783AEE
background
#F6F8FA
surface
#EBEFF4
border
#C6CACE
text
#070B0F
muted
#7A7C7F

Preview Lab

Preview with #155A7E

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

Preview Lab → · Contrast checker → · Palette generator →

#155A7E Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva