#257FAF#257FAF

#257FAF is a mid, moderate cyan. Relative luminance 0.187; OKLCH L 56.7% C 0.110 H 237.3°. Best body text is #000000 at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#257FAF
RGB	rgb(37, 127, 175)
HSL	hsl(201, 65%, 42%)
HSV	hsv(201, 79%, 69%)
CMYK	cmyk(78.9%, 27.4%, 0%, 31.4%)
CIE-LAB	lab(50.29, -9.17, -32.78)
CIE-LCH	lch(50.29, 34.04, 254.37°)
OKLab	oklab(56.71% -0.0595 -0.0926)
OKLCH	oklch(56.71% 0.11 237.3)
XYZ	xyz(16.0871, 18.6653, 43.3040)
Luminance	0.1867 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#257FAF #AF5525

analogous

#25AF9A #257FAF #253AAF

triadic

#257FAF #AF257F #7FAF25

tetradic

#257FAF #9A25AF #AF5525 #3AAF25

square

#257FAF #9A25AF #AF5525 #3AAF25

split-complementary

#257FAF #AF253A #AF9A25

monochromatic

#10364A #1A5A7C #257FAF #3CA0D6 #6EB9E0

Accessibility & contrast

On white

4.44

#257FAF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.73

#257FAF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #257FAF

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##257FAF	#FFFFFF	#000000	##000000
##257FAF	1.00	4.44	4.73	4.73
#FFFFFF	4.44	1.00	21.00	21.00
#000000	4.73	21.00	1.00	1.00
##000000	4.73	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#687FB1

Deuteranopia (green-blind)

#5572AE

Tritanopia (blue-blind)

#008B90

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #257faf;
/* rgb */ color: rgb(37, 127, 175);
/* oklch */ color: oklch(56.7% 0.110 237.3);

Tailwind

colors: {
  custom: {
    50: '#75a4c7',
    500: '#257faf',
    950: '#000000',
  },
}

SCSS

$custom: #257faf;
$custom-light: #75a4c7;
$custom-dark: #000000;

JSON

{
  "hex": "#257faf",
  "rgb": {
    "r": 37,
    "g": 127,
    "b": 175
  },
  "hsl": {
    "h": 200.87,
    "s": 65.094,
    "l": 41.569
  },
  "oklch": {
    "l": 0.56712,
    "c": 0.11009,
    "h": 237.3
  },
  "luminance": 0.18667
}

Semantic roles & 50–950 ramp

primary

#257FAF

secondary

#C78A69

accent

#7A40E8

background

#F7FAFC

surface

#EEF3F8

border

#C9CDD1

text

#0A0F13

muted

#7C7F82

Preview Lab

Preview with #257FAF

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

Preview Lab → · Contrast checker → · Palette generator →