#257DA4#257DA4

#257DA4 is a mid, moderate cyan. Relative luminance 0.177; OKLCH L 55.7% C 0.100 H 232.2°. Best body text is #FFFFFF at 4.62:1 contrast (WCAG AA passes).

Color values

HEX#257DA4
RGBrgb(37, 125, 164)
HSLhsl(198, 63%, 39%)
HSVhsv(198, 77%, 64%)
CMYKcmyk(77.4%, 23.8%, 0%, 35.7%)
CIE-LABlab(49.18, -11.98, -28.14)
CIE-LCHlch(49.18, 30.58, 246.94°)
OKLaboklab(55.66% -0.0614 -0.0792)
OKLCHoklch(55.66% 0.1 232.2)
XYZxyz(14.7947, 17.7391, 37.7590)
Luminance0.1774 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#257DA4 #A44C25
analogous
#25A48C #257DA4 #253EA4
triadic
#257DA4 #A4257D #7DA425
tetradic
#257DA4 #8C25A4 #A44C25 #3EA425
square
#257DA4 #8C25A4 #A44C25 #3EA425
split-complementary
#257DA4 #A4253E #A48C25
monochromatic
#0E3140 #1A5772 #257DA4 #35A1D1 #67B8DD

Accessibility & contrast

On white

4.62
#257DA4 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

4.55
#257DA4 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #257DA4
4.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##257DA4#FFFFFF#000000##FFFFFF
##257DA41.004.624.554.62
#FFFFFF4.621.0021.001.00
#0000004.5521.001.0021.00
##FFFFFF4.621.0021.001.00

Color blindness preview

Protanopia (red-blind)
#697CA6
Deuteranopia (green-blind)
#5870A3
Tritanopia (blue-blind)
#00878A
Achromatopsia (no color)
#757575

Design tokens & code

CSS
--color: #257da4;
/* rgb */ color: rgb(37, 125, 164);
/* oklch */ color: oklch(55.7% 0.100 232.2);
Tailwind
colors: {
  custom: {
    50: '#73a2bf',
    500: '#257da4',
    950: '#000000',
  },
}
SCSS
$custom: #257da4;
$custom-light: #73a2bf;
$custom-dark: #000000;
JSON
{
  "hex": "#257da4",
  "rgb": {
    "r": 37,
    "g": 125,
    "b": 164
  },
  "hsl": {
    "h": 198.425,
    "s": 63.184,
    "l": 39.412
  },
  "oklch": {
    "l": 0.5566,
    "c": 0.10024,
    "h": 232.2
  },
  "luminance": 0.17741
}

Semantic roles & 50–950 ramp

primary
#257DA4
secondary
#C28062
accent
#7442E6
background
#F7FAFB
surface
#EEF3F7
border
#C9CDD0
text
#090F12
muted
#7B7F81

Preview Lab

Preview with #257DA4

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

Preview Lab → · Contrast checker → · Palette generator →

#257DA4 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva