#257FB1#257FB1

#257FB1 is a mid, moderate cyan. Relative luminance 0.187; OKLCH L 56.8% C 0.112 H 238.4°. Best body text is #000000 at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#257FB1
RGB	rgb(37, 127, 177)
HSL	hsl(201, 65%, 42%)
HSV	hsv(201, 79%, 69%)
CMYK	cmyk(79.1%, 28.2%, 0%, 30.6%)
CIE-LAB	lab(50.39, -8.44, -33.79)
CIE-LCH	lch(50.39, 34.83, 255.97°)
OKLab	oklab(56.82% -0.0588 -0.0956)
OKLCH	oklch(56.82% 0.112 238.4)
XYZ	xyz(16.2850, 18.7444, 44.3462)
Luminance	0.1875 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#257FB1 #B15725

analogous

#25B19D #257FB1 #2539B1

triadic

#257FB1 #B1257F #7FB125

tetradic

#257FB1 #9D25B1 #B15725 #39B125

square

#257FB1 #9D25B1 #B15725 #39B125

split-complementary

#257FB1 #B12539 #B19D25

monochromatic

#10364C #1A5B7E #257FB1 #3DA0D6 #6FB8E1

Accessibility & contrast

On white

4.42

#257FB1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.75

#257FB1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #257FB1

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##257FB1	#FFFFFF	#000000	##000000
##257FB1	1.00	4.42	4.75	4.75
#FFFFFF	4.42	1.00	21.00	21.00
#000000	4.75	21.00	1.00	1.00
##000000	4.75	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#677FB3

Deuteranopia (green-blind)

#5472B0

Tritanopia (blue-blind)

#008C90

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #257fb1;
/* rgb */ color: rgb(37, 127, 177);
/* oklch */ color: oklch(56.8% 0.112 238.4);

Tailwind

colors: {
  custom: {
    50: '#76a4c8',
    500: '#257fb1',
    950: '#000000',
  },
}

SCSS

$custom: #257fb1;
$custom-light: #76a4c8;
$custom-dark: #000000;

JSON

{
  "hex": "#257fb1",
  "rgb": {
    "r": 37,
    "g": 127,
    "b": 177
  },
  "hsl": {
    "h": 201.429,
    "s": 65.421,
    "l": 41.961
  },
  "oklch": {
    "l": 0.56817,
    "c": 0.11222,
    "h": 238.4
  },
  "luminance": 0.18746
}

Semantic roles & 50–950 ramp

primary

#257FB1

secondary

#C88C6A

accent

#7C3FE8

background

#F7FAFC

surface

#EEF3F8

border

#C9CDD1

text

#0A0F13

muted

#7C7F82

Preview Lab

Preview with #257FB1

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

Preview Lab → · Contrast checker → · Palette generator →