#257ABC#257ABC

#257ABC is a mid, vivid cyan. Relative luminance 0.179; OKLCH L 56.2% C 0.129 H 246.8°. Best body text is #000000 at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#257ABC
RGB	rgb(37, 122, 188)
HSL	hsl(206, 67%, 44%)
HSV	hsv(206, 80%, 74%)
CMYK	cmyk(80.3%, 35.1%, 0%, 26.3%)
CIE-LAB	lab(49.42, -1.42, -41.65)
CIE-LCH	lch(49.42, 41.67, 268.05°)
OKLab	oklab(56.24% -0.0509 -0.1185)
OKLCH	oklch(56.24% 0.129 246.8)
XYZ	xyz(16.7961, 17.9412, 50.1450)
Luminance	0.1794 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#257ABC #BC6725

analogous

#25BCB3 #257ABC #252FBC

triadic

#257ABC #BC257A #7ABC25

tetradic

#257ABC #B325BC #BC6725 #2FBC25

square

#257ABC #B325BC #BC6725 #2FBC25

split-complementary

#257ABC #BC252F #BCB325

monochromatic

#113856 #1B5989 #257ABC #4499DA #77B5E4

Accessibility & contrast

On white

4.58

#257ABC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.59

#257ABC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #257ABC

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##257ABC	#FFFFFF	#000000	##000000
##257ABC	1.00	4.58	4.59	4.59
#FFFFFF	4.58	1.00	21.00	21.00
#000000	4.59	21.00	1.00	1.00
##000000	4.59	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B7DBF

Deuteranopia (green-blind)

#456FBB

Tritanopia (blue-blind)

#008A92

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #257abc;
/* rgb */ color: rgb(37, 122, 188);
/* oklch */ color: oklch(56.2% 0.129 246.8);

Tailwind

colors: {
  custom: {
    50: '#78a0d0',
    500: '#257abc',
    950: '#000000',
  },
}

SCSS

$custom: #257abc;
$custom-light: #78a0d0;
$custom-dark: #000000;

JSON

{
  "hex": "#257abc",
  "rgb": {
    "r": 37,
    "g": 122,
    "b": 188
  },
  "hsl": {
    "h": 206.225,
    "s": 67.111,
    "l": 44.118
  },
  "oklch": {
    "l": 0.56236,
    "c": 0.129,
    "h": 246.8
  },
  "luminance": 0.17943
}

Semantic roles & 50–950 ramp

primary

#257ABC

secondary

#CC9971

accent

#893EEA

background

#F7F9FC

surface

#EEF2F9

border

#C9CCD2

text

#0A0E14

muted

#7C7E82

Preview Lab

Preview with #257ABC

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

Preview Lab → · Contrast checker → · Palette generator →