#257DC6#257DC6

#257DC6 is a mid, vivid cyan. Relative luminance 0.191; OKLCH L 57.5% C 0.138 H 248.5°. Best body text is #000000 at 4.83:1 contrast (WCAG AA passes).

Color values

HEX	#257DC6
RGB	rgb(37, 125, 198)
HSL	hsl(207, 69%, 46%)
HSV	hsv(207, 81%, 78%)
CMYK	cmyk(81.3%, 36.9%, 0%, 22.4%)
CIE-LAB	lab(50.85, 0.52, -45.13)
CIE-LCH	lch(50.85, 45.13, 270.66°)
OKLab	oklab(57.53% -0.0508 -0.1287)
OKLCH	oklch(57.53% 0.138 248.5)
XYZ	xyz(18.2857, 19.1355, 56.1449)
Luminance	0.1914 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#257DC6 #C66E25

analogous

#25C6BE #257DC6 #252CC6

triadic

#257DC6 #C6257D #7DC625

tetradic

#257DC6 #BE25C6 #C66E25 #2CC625

square

#257DC6 #BE25C6 #C66E25 #2CC625

split-complementary

#257DC6 #C6252C #C6BE25

monochromatic

#123C5F #1B5C92 #257DC6 #4B9BDD #7EB8E7

Accessibility & contrast

On white

4.35

#257DC6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.83

#257DC6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #257DC6

4.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##257DC6	#FFFFFF	#000000	##000000
##257DC6	1.00	4.35	4.83	4.83
#FFFFFF	4.35	1.00	21.00	21.00
#000000	4.83	21.00	1.00	1.00
##000000	4.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A81C9

Deuteranopia (green-blind)

#4273C5

Tritanopia (blue-blind)

#008F98

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #257dc6;
/* rgb */ color: rgb(37, 125, 198);
/* oklch */ color: oklch(57.5% 0.138 248.5);

Tailwind

colors: {
  custom: {
    50: '#7aa2d7',
    500: '#257dc6',
    950: '#000000',
  },
}

SCSS

$custom: #257dc6;
$custom-light: #7aa2d7;
$custom-dark: #000000;

JSON

{
  "hex": "#257dc6",
  "rgb": {
    "r": 37,
    "g": 125,
    "b": 198
  },
  "hsl": {
    "h": 207.205,
    "s": 68.511,
    "l": 46.078
  },
  "oklch": {
    "l": 0.57526,
    "c": 0.13834,
    "h": 248.5
  },
  "luminance": 0.19138
}

Semantic roles & 50–950 ramp

primary

#257DC6

secondary

#CF9F77

accent

#8C3CEB

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0F14

muted

#7C7E83

Preview Lab

Preview with #257DC6

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

Preview Lab → · Contrast checker → · Palette generator →