#257CB0#257CB0

#257CB0 is a mid, moderate cyan. Relative luminance 0.179; OKLCH L 56.0% C 0.113 H 240.2°. Best body text is #000000 at 4.59:1 contrast (WCAG AA passes).

Color values

HEX#257CB0
RGBrgb(37, 124, 176)
HSLhsl(202, 65%, 42%)
HSVhsv(202, 79%, 69%)
CMYKcmyk(79%, 29.5%, 0%, 31%)
CIE-LABlab(49.42, -7.06, -34.72)
CIE-LCHlch(49.42, 35.43, 258.51°)
OKLaboklab(56.04% -0.0563 -0.0983)
OKLCHoklch(56.04% 0.113 240.2)
XYZxyz(15.8040, 17.9413, 43.6960)
Luminance0.1794 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#257CB0 #B05925
analogous
#25B09F #257CB0 #2537B0
triadic
#257CB0 #B0257C #7CB025
tetradic
#257CB0 #9F25B0 #B05925 #37B025
square
#257CB0 #9F25B0 #B05925 #37B025
split-complementary
#257CB0 #B02537 #B09F25
monochromatic
#10354B #1A587D #257CB0 #3C9CD6 #6FB6E1

Accessibility & contrast

On white

4.58
#257CB0 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

4.59
#257CB0 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #257CB0
4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##257CB0#FFFFFF#000000##000000
##257CB01.004.584.594.59
#FFFFFF4.581.0021.0021.00
#0000004.5921.001.001.00
##0000004.5921.001.001.00

Color blindness preview

Protanopia (red-blind)
#637DB2
Deuteranopia (green-blind)
#5170AF
Tritanopia (blue-blind)
#00898E
Achromatopsia (no color)
#757575

Design tokens & code

CSS
--color: #257cb0;
/* rgb */ color: rgb(37, 124, 176);
/* oklch */ color: oklch(56.0% 0.113 240.2);
Tailwind
colors: {
  custom: {
    50: '#75a1c8',
    500: '#257cb0',
    950: '#000000',
  },
}
SCSS
$custom: #257cb0;
$custom-light: #75a1c8;
$custom-dark: #000000;
JSON
{
  "hex": "#257cb0",
  "rgb": {
    "r": 37,
    "g": 124,
    "b": 176
  },
  "hsl": {
    "h": 202.446,
    "s": 65.258,
    "l": 41.765
  },
  "oklch": {
    "l": 0.56038,
    "c": 0.1133,
    "h": 240.2
  },
  "luminance": 0.17943
}

Semantic roles & 50–950 ramp

primary
#257CB0
secondary
#C78D6A
accent
#7F40E8
background
#F7F9FC
surface
#EEF2F8
border
#C9CCD1
text
#0A0F13
muted
#7C7E82

Preview Lab

Preview with #257CB0

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

Preview Lab → · Contrast checker → · Palette generator →

#257CB0 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva