#257DC4#257DC4

#257DC4 is a mid, vivid cyan. Relative luminance 0.190; OKLCH L 57.4% C 0.136 H 247.8°. Best body text is #000000 at 4.81:1 contrast (WCAG AA passes).

Color values

HEX#257DC4
RGBrgb(37, 125, 196)
HSLhsl(207, 68%, 46%)
HSVhsv(207, 81%, 77%)
CMYKcmyk(81.1%, 36.2%, 0%, 23.1%)
CIE-LABlab(50.74, -0.23, -44.16)
CIE-LCHlch(50.74, 44.16, 269.70°)
OKLaboklab(57.41% -0.0513 -0.1258)
OKLCHoklch(57.41% 0.136 247.8)
XYZxyz(18.0565, 19.0438, 54.9380)
Luminance0.1905 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#257DC4 #C46C25
analogous
#25C4BB #257DC4 #252EC4
triadic
#257DC4 #C4257D #7DC425
tetradic
#257DC4 #BB25C4 #C46C25 #2EC425
square
#257DC4 #BB25C4 #C46C25 #2EC425
split-complementary
#257DC4 #C4252E #C4BB25
monochromatic
#123B5D #1B5C91 #257DC4 #499BDD #7DB7E6

Accessibility & contrast

On white

4.37
#257DC4 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

4.81
#257DC4 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #257DC4
4.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##257DC4#FFFFFF#000000##000000
##257DC41.004.374.814.81
#FFFFFF4.371.0021.0021.00
#0000004.8121.001.001.00
##0000004.8121.001.001.00

Color blindness preview

Protanopia (red-blind)
#5B81C7
Deuteranopia (green-blind)
#4472C3
Tritanopia (blue-blind)
#008E97
Achromatopsia (no color)
#797979

Design tokens & code

CSS
--color: #257dc4;
/* rgb */ color: rgb(37, 125, 196);
/* oklch */ color: oklch(57.4% 0.136 247.8);
Tailwind
colors: {
  custom: {
    50: '#79a2d6',
    500: '#257dc4',
    950: '#000000',
  },
}
SCSS
$custom: #257dc4;
$custom-light: #79a2d6;
$custom-dark: #000000;
JSON
{
  "hex": "#257dc4",
  "rgb": {
    "r": 37,
    "g": 125,
    "b": 196
  },
  "hsl": {
    "h": 206.792,
    "s": 68.24,
    "l": 45.686
  },
  "oklch": {
    "l": 0.57407,
    "c": 0.13589,
    "h": 247.8
  },
  "luminance": 0.19046
}

Semantic roles & 50–950 ramp

primary
#257DC4
secondary
#CF9E76
accent
#8B3DEB
background
#F8F9FD
surface
#EFF2FA
border
#CACCD3
text
#0B0F14
muted
#7C7E83

Preview Lab

Preview with #257DC4

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

Preview Lab → · Contrast checker → · Palette generator →

#257DC4 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva