#257BC5#257BC5

#257BC5 is a mid, vivid cyan. Relative luminance 0.186; OKLCH L 57.0% C 0.139 H 249.2°. Best body text is #000000 at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#257BC5
RGB	rgb(37, 123, 197)
HSL	hsl(208, 68%, 46%)
HSV	hsv(208, 81%, 77%)
CMYK	cmyk(81.2%, 37.6%, 0%, 22.7%)
CIE-LAB	lab(50.20, 1.35, -45.58)
CIE-LCH	lch(50.20, 45.60, 271.70°)
OKLab	oklab(57% -0.0493 -0.13)
OKLCH	oklch(57% 0.139 249.2)
XYZ	xyz(17.9201, 18.5882, 55.4559)
Luminance	0.1859 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#257BC5 #C56F25

analogous

#25C5BF #257BC5 #252BC5

triadic

#257BC5 #C5257B #7BC525

tetradic

#257BC5 #BF25C5 #C56F25 #2BC525

square

#257BC5 #BF25C5 #C56F25 #2BC525

split-complementary

#257BC5 #C5252B #C5BF25

monochromatic

#123B5E #1B5B91 #257BC5 #4A99DD #7EB6E7

Accessibility & contrast

On white

4.45

#257BC5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.72

#257BC5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #257BC5

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##257BC5	#FFFFFF	#000000	##000000
##257BC5	1.00	4.45	4.72	4.72
#FFFFFF	4.45	1.00	21.00	21.00
#000000	4.72	21.00	1.00	1.00
##000000	4.72	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#587FC8

Deuteranopia (green-blind)

#3F71C4

Tritanopia (blue-blind)

#008D96

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #257bc5;
/* rgb */ color: rgb(37, 123, 197);
/* oklch */ color: oklch(57.0% 0.139 249.2);

Tailwind

colors: {
  custom: {
    50: '#79a0d7',
    500: '#257bc5',
    950: '#000000',
  },
}

SCSS

$custom: #257bc5;
$custom-light: #79a0d7;
$custom-dark: #000000;

JSON

{
  "hex": "#257bc5",
  "rgb": {
    "r": 37,
    "g": 123,
    "b": 197
  },
  "hsl": {
    "h": 207.75,
    "s": 68.376,
    "l": 45.882
  },
  "oklch": {
    "l": 0.57003,
    "c": 0.13908,
    "h": 249.2
  },
  "luminance": 0.1859
}

Semantic roles & 50–950 ramp

primary

#257BC5

secondary

#CFA077

accent

#8D3DEB

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #257BC5

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

Preview Lab → · Contrast checker → · Palette generator →