#256DB0#256DB0

#256DB0 is a mid, vivid cyan. Relative luminance 0.145; OKLCH L 52.5% C 0.127 H 250.4°. Best body text is #FFFFFF at 5.39:1 contrast (WCAG AA passes).

Color values

HEX#256DB0
RGBrgb(37, 109, 176)
HSLhsl(209, 65%, 42%)
HSVhsv(209, 79%, 69%)
CMYKcmyk(79%, 38.1%, 0%, 31%)
CIE-LABlab(44.89, 2.01, -41.88)
CIE-LCHlch(44.89, 41.93, 272.75°)
OKLaboklab(52.46% -0.0425 -0.1195)
OKLCHoklch(52.46% 0.127 250.4)
XYZxyz(14.0651, 14.4635, 43.1163)
Luminance0.1447 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#256DB0 #B06825
analogous
#25B0AE #256DB0 #2528B0
triadic
#256DB0 #B0256D #6DB025
tetradic
#256DB0 #AE25B0 #B06825 #28B025
square
#256DB0 #AE25B0 #B06825 #28B025
split-complementary
#256DB0 #B02528 #B0AE25
monochromatic
#102E4B #1A4E7D #256DB0 #3C8CD6 #6FAAE1

Accessibility & contrast

On white

5.39
#256DB0 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.89
#256DB0 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #256DB0
5.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##256DB0#FFFFFF#000000##FFFFFF
##256DB01.005.393.895.39
#FFFFFF5.391.0021.001.00
#0000003.8921.001.0021.00
##FFFFFF5.391.0021.001.00

Color blindness preview

Protanopia (red-blind)
#4D71B3
Deuteranopia (green-blind)
#3864AF
Tritanopia (blue-blind)
#007D86
Achromatopsia (no color)
#6A6A6A

Design tokens & code

CSS
--color: #256db0;
/* rgb */ color: rgb(37, 109, 176);
/* oklch */ color: oklch(52.5% 0.127 250.4);
Tailwind
colors: {
  custom: {
    50: '#7596c8',
    500: '#256db0',
    950: '#000000',
  },
}
SCSS
$custom: #256db0;
$custom-light: #7596c8;
$custom-dark: #000000;
JSON
{
  "hex": "#256db0",
  "rgb": {
    "r": 37,
    "g": 109,
    "b": 176
  },
  "hsl": {
    "h": 208.921,
    "s": 65.258,
    "l": 41.765
  },
  "oklch": {
    "l": 0.52464,
    "c": 0.12681,
    "h": 250.4
  },
  "luminance": 0.14465
}

Semantic roles & 50–950 ramp

primary
#256DB0
secondary
#C7976A
accent
#9140E8
background
#F7F9FC
surface
#EEF1F8
border
#C9CBD1
text
#0A0D13
muted
#7C7E82

Preview Lab

Preview with #256DB0

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

Preview Lab → · Contrast checker → · Palette generator →

#256DB0 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva