#257E9F#257E9F

#257E9F is a mid, moderate cyan. Relative luminance 0.178; OKLCH L 55.7% C 0.095 H 227.6°. Best body text is #FFFFFF at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#257E9F
RGB	rgb(37, 126, 159)
HSL	hsl(196, 62%, 38%)
HSV	hsv(196, 77%, 62%)
CMYK	cmyk(76.7%, 20.8%, 0%, 37.6%)
CIE-LAB	lab(49.27, -14.31, -25.08)
CIE-LCH	lch(49.27, 28.87, 240.29°)
OKLab	oklab(55.66% -0.0643 -0.0704)
OKLCH	oklch(55.66% 0.095 227.6)
XYZ	xyz(14.4793, 17.8165, 35.4700)
Luminance	0.1782 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#257E9F #9F4625

analogous

#259F83 #257E9F #25419F

triadic

#257E9F #9F257E #7E9F25

tetradic

#257E9F #83259F #9F4625 #419F25

square

#257E9F #83259F #9F4625 #419F25

split-complementary

#257E9F #9F2541 #9F8325

monochromatic

#0E2F3C #19576D #257E9F #32A5CF #64BBDB

Accessibility & contrast

On white

4.60

#257E9F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.56

#257E9F on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #257E9F

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##257E9F	#FFFFFF	#000000	##FFFFFF
##257E9F	1.00	4.60	4.56	4.60
#FFFFFF	4.60	1.00	21.00	1.00
#000000	4.56	21.00	1.00	21.00
##FFFFFF	4.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6C7CA1

Deuteranopia (green-blind)

#5C709F

Tritanopia (blue-blind)

#008789

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #257e9f;
/* rgb */ color: rgb(37, 126, 159);
/* oklch */ color: oklch(55.7% 0.095 227.6);

Tailwind

colors: {
  custom: {
    50: '#72a3bb',
    500: '#257e9f',
    950: '#000000',
  },
}

SCSS

$custom: #257e9f;
$custom-light: #72a3bb;
$custom-dark: #000000;

JSON

{
  "hex": "#257e9f",
  "rgb": {
    "r": 37,
    "g": 126,
    "b": 159
  },
  "hsl": {
    "h": 196.23,
    "s": 62.245,
    "l": 38.431
  },
  "oklch": {
    "l": 0.55664,
    "c": 0.09534,
    "h": 227.6
  },
  "luminance": 0.17818
}

Semantic roles & 50–950 ramp

primary

#257E9F

secondary

#C07A5F

accent

#6F42E5

background

#F7FAFB

surface

#EDF3F6

border

#C8CDD0

text

#090F12

muted

#7B7F81

Preview Lab

Preview with #257E9F

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

Preview Lab → · Contrast checker → · Palette generator →