#257CA9#257CA9

#257CA9 is a mid, moderate cyan. Relative luminance 0.177; OKLCH L 55.7% C 0.106 H 236.3°. Best body text is #FFFFFF at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#257CA9
RGB	rgb(37, 124, 169)
HSL	hsl(200, 64%, 40%)
HSV	hsv(200, 78%, 66%)
CMYK	cmyk(78.1%, 26.6%, 0%, 33.7%)
CIE-LAB	lab(49.10, -9.61, -31.18)
CIE-LCH	lch(49.10, 32.62, 252.87°)
OKLab	oklab(55.67% -0.0587 -0.088)
OKLCH	oklch(55.67% 0.106 236.3)
XYZ	xyz(15.1292, 17.6714, 40.1420)
Luminance	0.1767 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#257CA9 #A95225

analogous

#25A994 #257CA9 #253AA9

triadic

#257CA9 #A9257C #7CA925

tetradic

#257CA9 #9425A9 #A95225 #3AA925

square

#257CA9 #9425A9 #A95225 #3AA925

split-complementary

#257CA9 #A9253A #A99425

monochromatic

#0F3245 #1A5777 #257CA9 #389ED3 #6AB7DE

Accessibility & contrast

On white

4.63

#257CA9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.53

#257CA9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #257CA9

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##257CA9	#FFFFFF	#000000	##FFFFFF
##257CA9	1.00	4.63	4.53	4.63
#FFFFFF	4.63	1.00	21.00	1.00
#000000	4.53	21.00	1.00	21.00
##FFFFFF	4.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#667CAB

Deuteranopia (green-blind)

#556FA8

Tritanopia (blue-blind)

#00888B

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #257ca9;
/* rgb */ color: rgb(37, 124, 169);
/* oklch */ color: oklch(55.7% 0.106 236.3);

Tailwind

colors: {
  custom: {
    50: '#74a1c2',
    500: '#257ca9',
    950: '#000000',
  },
}

SCSS

$custom: #257ca9;
$custom-light: #74a1c2;
$custom-dark: #000000;

JSON

{
  "hex": "#257ca9",
  "rgb": {
    "r": 37,
    "g": 124,
    "b": 169
  },
  "hsl": {
    "h": 200.455,
    "s": 64.078,
    "l": 40.392
  },
  "oklch": {
    "l": 0.55668,
    "c": 0.10578,
    "h": 236.3
  },
  "luminance": 0.17673
}

Semantic roles & 50–950 ramp

primary

#257CA9

secondary

#C48665

accent

#7941E7

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#090F12

muted

#7B7E81

Preview Lab

Preview with #257CA9

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

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