#256A8B#256A8B

#256A8B is a mid, moderate cyan. Relative luminance 0.126; OKLCH L 49.6% C 0.086 H 233.2°. Best body text is #FFFFFF at 5.98:1 contrast (WCAG AA passes).

Color values

HEX#256A8B
RGBrgb(37, 106, 139)
HSLhsl(199, 58%, 35%)
HSVhsv(199, 73%, 55%)
CMYKcmyk(73.4%, 23.7%, 0%, 45.5%)
CIE-LABlab(42.10, -9.94, -24.37)
CIE-LCHlch(42.10, 26.32, 247.80°)
OKLaboklab(49.65% -0.0513 -0.0685)
OKLCHoklch(49.65% 0.086 233.2)
XYZxyz(10.5753, 12.5643, 26.2889)
Luminance0.1257 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#256A8B #8B4625
analogous
#258B79 #256A8B #25378B
triadic
#256A8B #8B256A #6A8B25
tetradic
#256A8B #79258B #8B4625 #378B25
square
#256A8B #79258B #8B4625 #378B25
split-complementary
#256A8B #8B2537 #8B7925
monochromatic
#0B202A #18455B #256A8B #328FBB #58ABD3

Accessibility & contrast

On white

5.98
#256A8B on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.51
#256A8B on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #256A8B
5.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##256A8B#FFFFFF#000000##FFFFFF
##256A8B1.005.983.515.98
#FFFFFF5.981.0021.001.00
#0000003.5121.001.0021.00
##FFFFFF5.981.0021.001.00

Color blindness preview

Protanopia (red-blind)
#5A698D
Deuteranopia (green-blind)
#4C5F8A
Tritanopia (blue-blind)
#007375
Achromatopsia (no color)
#636363

Design tokens & code

CSS
--color: #256a8b;
/* rgb */ color: rgb(37, 106, 139);
/* oklch */ color: oklch(49.6% 0.086 233.2);
Tailwind
colors: {
  custom: {
    50: '#6e94ad',
    500: '#256a8b',
    950: '#000000',
  },
}
SCSS
$custom: #256a8b;
$custom-light: #6e94ad;
$custom-dark: #000000;
JSON
{
  "hex": "#256a8b",
  "rgb": {
    "r": 37,
    "g": 106,
    "b": 139
  },
  "hsl": {
    "h": 199.412,
    "s": 57.955,
    "l": 34.51
  },
  "oklch": {
    "l": 0.49648,
    "c": 0.08557,
    "h": 233.2
  },
  "luminance": 0.12565
}

Semantic roles & 50–950 ramp

primary
#256A8B
secondary
#B77555
accent
#7947E1
background
#F7F9FA
surface
#EDF1F4
border
#C8CBCE
text
#080D10
muted
#7B7E7F

Preview Lab

Preview with #256A8B

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

Preview Lab → · Contrast checker → · Palette generator →

#256A8B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva