#257DA7#257DA7

#257DA7 is a mid, moderate cyan. Relative luminance 0.179; OKLCH L 55.8% C 0.103 H 234.2°. Best body text is #FFFFFF at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#257DA7
RGB	rgb(37, 125, 167)
HSL	hsl(199, 64%, 40%)
HSV	hsv(199, 78%, 65%)
CMYK	cmyk(77.8%, 25.1%, 0%, 34.5%)
CIE-LAB	lab(49.31, -10.90, -29.67)
CIE-LCH	lch(49.31, 31.61, 249.82°)
OKLab	oklab(55.81% -0.0603 -0.0836)
OKLCH	oklch(55.81% 0.103 234.2)
XYZ	xyz(15.0688, 17.8488, 39.2027)
Luminance	0.1785 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#257DA7 #A74F25

analogous

#25A790 #257DA7 #253CA7

triadic

#257DA7 #A7257D #7DA725

tetradic

#257DA7 #9025A7 #A74F25 #3CA725

square

#257DA7 #9025A7 #A74F25 #3CA725

split-complementary

#257DA7 #A7253C #A79025

monochromatic

#0F3243 #1A5775 #257DA7 #37A0D3 #69B8DE

Accessibility & contrast

On white

4.59

#257DA7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.57

#257DA7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #257DA7

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##257DA7	#FFFFFF	#000000	##FFFFFF
##257DA7	1.00	4.59	4.57	4.59
#FFFFFF	4.59	1.00	21.00	1.00
#000000	4.57	21.00	1.00	21.00
##FFFFFF	4.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#687CA9

Deuteranopia (green-blind)

#5770A6

Tritanopia (blue-blind)

#00888B

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #257da7;
/* rgb */ color: rgb(37, 125, 167);
/* oklch */ color: oklch(55.8% 0.103 234.2);

Tailwind

colors: {
  custom: {
    50: '#74a2c1',
    500: '#257da7',
    950: '#000000',
  },
}

SCSS

$custom: #257da7;
$custom-light: #74a2c1;
$custom-dark: #000000;

JSON

{
  "hex": "#257da7",
  "rgb": {
    "r": 37,
    "g": 125,
    "b": 167
  },
  "hsl": {
    "h": 199.385,
    "s": 63.725,
    "l": 40
  },
  "oklch": {
    "l": 0.55811,
    "c": 0.10315,
    "h": 234.2
  },
  "luminance": 0.17851
}

Semantic roles & 50–950 ramp

primary

#257DA7

secondary

#C48364

accent

#7741E7

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#090F12

muted

#7B7E81

Preview Lab

Preview with #257DA7

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

Preview Lab → · Contrast checker → · Palette generator →