#257BA4#257BA4

#257BA4 is a mid, moderate cyan. Relative luminance 0.172; OKLCH L 55.2% C 0.101 H 234.1°. Best body text is #FFFFFF at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#257BA4
RGB	rgb(37, 123, 164)
HSL	hsl(199, 63%, 39%)
HSV	hsv(199, 77%, 64%)
CMYK	cmyk(77.4%, 25%, 0%, 35.7%)
CIE-LAB	lab(48.56, -10.83, -29.10)
CIE-LCH	lch(48.56, 31.05, 249.58°)
OKLab	oklab(55.17% -0.0595 -0.082)
OKLCH	oklch(55.17% 0.101 234.1)
XYZ	xyz(14.5441, 17.2378, 37.6755)
Luminance	0.1724 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#257BA4 #A44E25

analogous

#25A48E #257BA4 #253CA4

triadic

#257BA4 #A4257B #7BA425

tetradic

#257BA4 #8E25A4 #A44E25 #3CA425

square

#257BA4 #8E25A4 #A44E25 #3CA425

split-complementary

#257BA4 #A4253C #A48E25

monochromatic

#0E3040 #1A5672 #257BA4 #359FD1 #67B7DD

Accessibility & contrast

On white

4.72

#257BA4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.45

#257BA4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #257BA4

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##257BA4	#FFFFFF	#000000	##FFFFFF
##257BA4	1.00	4.72	4.45	4.72
#FFFFFF	4.72	1.00	21.00	1.00
#000000	4.45	21.00	1.00	21.00
##FFFFFF	4.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#677AA6

Deuteranopia (green-blind)

#566EA3

Tritanopia (blue-blind)

#008689

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #257ba4;
/* rgb */ color: rgb(37, 123, 164);
/* oklch */ color: oklch(55.2% 0.101 234.1);

Tailwind

colors: {
  custom: {
    50: '#73a1bf',
    500: '#257ba4',
    950: '#000000',
  },
}

SCSS

$custom: #257ba4;
$custom-light: #73a1bf;
$custom-dark: #000000;

JSON

{
  "hex": "#257ba4",
  "rgb": {
    "r": 37,
    "g": 123,
    "b": 164
  },
  "hsl": {
    "h": 199.37,
    "s": 63.184,
    "l": 39.412
  },
  "oklch": {
    "l": 0.55166,
    "c": 0.10131,
    "h": 234.1
  },
  "luminance": 0.1724
}

Semantic roles & 50–950 ramp

primary

#257BA4

secondary

#C28162

accent

#7742E6

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#090E12

muted

#7B7E81

Preview Lab

Preview with #257BA4

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

Preview Lab → · Contrast checker → · Palette generator →