#257BA5#257BA5

#257BA5 is a mid, moderate cyan. Relative luminance 0.173; OKLCH L 55.2% C 0.102 H 234.7°. Best body text is #FFFFFF at 4.71:1 contrast (WCAG AA passes).

Color values

HEX	#257BA5
RGB	rgb(37, 123, 165)
HSL	hsl(200, 63%, 40%)
HSV	hsv(200, 78%, 65%)
CMYK	cmyk(77.6%, 25.5%, 0%, 35.3%)
CIE-LAB	lab(48.60, -10.47, -29.61)
CIE-LCH	lch(48.60, 31.41, 250.52°)
OKLab	oklab(55.22% -0.0591 -0.0835)
OKLCH	oklch(55.22% 0.102 234.7)
XYZ	xyz(14.6347, 17.2741, 38.1529)
Luminance	0.1728 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#257BA5 #A54F25

analogous

#25A58F #257BA5 #253BA5

triadic

#257BA5 #A5257B #7BA525

tetradic

#257BA5 #8F25A5 #A54F25 #3BA525

square

#257BA5 #8F25A5 #A54F25 #3BA525

split-complementary

#257BA5 #A5253B #A58F25

monochromatic

#0F3041 #1A5673 #257BA5 #359ED2 #67B6DD

Accessibility & contrast

On white

4.71

#257BA5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.46

#257BA5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #257BA5

4.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##257BA5	#FFFFFF	#000000	##FFFFFF
##257BA5	1.00	4.71	4.46	4.71
#FFFFFF	4.71	1.00	21.00	1.00
#000000	4.46	21.00	1.00	21.00
##FFFFFF	4.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#667AA7

Deuteranopia (green-blind)

#556EA4

Tritanopia (blue-blind)

#008689

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #257ba5;
/* rgb */ color: rgb(37, 123, 165);
/* oklch */ color: oklch(55.2% 0.102 234.7);

Tailwind

colors: {
  custom: {
    50: '#73a1c0',
    500: '#257ba5',
    950: '#000000',
  },
}

SCSS

$custom: #257ba5;
$custom-light: #73a1c0;
$custom-dark: #000000;

JSON

{
  "hex": "#257ba5",
  "rgb": {
    "r": 37,
    "g": 123,
    "b": 165
  },
  "hsl": {
    "h": 199.688,
    "s": 63.366,
    "l": 39.608
  },
  "oklch": {
    "l": 0.55217,
    "c": 0.1023,
    "h": 234.7
  },
  "luminance": 0.17276
}

Semantic roles & 50–950 ramp

primary

#257BA5

secondary

#C38263

accent

#7841E6

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#090E12

muted

#7B7E81

Preview Lab

Preview with #257BA5

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

Preview Lab → · Contrast checker → · Palette generator →