#257DA0#257DA0

#257DA0 is a mid, moderate cyan. Relative luminance 0.176; OKLCH L 55.5% C 0.097 H 229.4°. Best body text is #FFFFFF at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#257DA0
RGB	rgb(37, 125, 160)
HSL	hsl(197, 62%, 39%)
HSV	hsv(197, 77%, 63%)
CMYK	cmyk(76.9%, 21.9%, 0%, 37.3%)
CIE-LAB	lab(49.00, -13.40, -26.08)
CIE-LCH	lch(49.00, 29.32, 242.81°)
OKLab	oklab(55.46% -0.0629 -0.0733)
OKLCH	oklch(55.46% 0.097 229.4)
XYZ	xyz(14.4391, 17.5969, 35.8864)
Luminance	0.1760 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#257DA0 #A04825

analogous

#25A085 #257DA0 #253FA0

triadic

#257DA0 #A0257D #7DA025

tetradic

#257DA0 #8525A0 #A04825 #3FA025

square

#257DA0 #8525A0 #A04825 #3FA025

split-complementary

#257DA0 #A0253F #A08525

monochromatic

#0E2F3D #1A566E #257DA0 #32A3D0 #64B9DB

Accessibility & contrast

On white

4.65

#257DA0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.52

#257DA0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #257DA0

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##257DA0	#FFFFFF	#000000	##FFFFFF
##257DA0	1.00	4.65	4.52	4.65
#FFFFFF	4.65	1.00	21.00	1.00
#000000	4.52	21.00	1.00	21.00
##FFFFFF	4.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B7BA2

Deuteranopia (green-blind)

#5A6FA0

Tritanopia (blue-blind)

#008789

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #257da0;
/* rgb */ color: rgb(37, 125, 160);
/* oklch */ color: oklch(55.5% 0.097 229.4);

Tailwind

colors: {
  custom: {
    50: '#73a2bc',
    500: '#257da0',
    950: '#000000',
  },
}

SCSS

$custom: #257da0;
$custom-light: #73a2bc;
$custom-dark: #000000;

JSON

{
  "hex": "#257da0",
  "rgb": {
    "r": 37,
    "g": 125,
    "b": 160
  },
  "hsl": {
    "h": 197.073,
    "s": 62.437,
    "l": 38.627
  },
  "oklch": {
    "l": 0.55463,
    "c": 0.09657,
    "h": 229.4
  },
  "luminance": 0.17599
}

Semantic roles & 50–950 ramp

primary

#257DA0

secondary

#C17C60

accent

#7142E6

background

#F7FAFB

surface

#EDF3F6

border

#C8CDD0

text

#090F12

muted

#7B7F81

Preview Lab

Preview with #257DA0

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

Preview Lab → · Contrast checker → · Palette generator →