#257FA6#257FA6

#257FA6 is a mid, moderate cyan. Relative luminance 0.183; OKLCH L 56.3% C 0.101 H 231.7°. Best body text is #000000 at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#257FA6
RGB	rgb(37, 127, 166)
HSL	hsl(198, 64%, 40%)
HSV	hsv(198, 78%, 65%)
CMYK	cmyk(77.7%, 23.5%, 0%, 34.9%)
CIE-LAB	lab(49.89, -12.40, -28.20)
CIE-LCH	lch(49.89, 30.81, 246.26°)
OKLab	oklab(56.25% -0.0627 -0.0794)
OKLCH	oklch(56.25% 0.101 231.7)
XYZ	xyz(15.2325, 18.3234, 38.8030)
Luminance	0.1832 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#257FA6 #A64C25

analogous

#25A68D #257FA6 #253EA6

triadic

#257FA6 #A6257F #7FA625

tetradic

#257FA6 #8D25A6 #A64C25 #3EA625

square

#257FA6 #8D25A6 #A64C25 #3EA625

split-complementary

#257FA6 #A6253E #A68D25

monochromatic

#0F3242 #1A5974 #257FA6 #36A3D2 #68BADD

Accessibility & contrast

On white

4.50

#257FA6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.67

#257FA6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #257FA6

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##257FA6	#FFFFFF	#000000	##000000
##257FA6	1.00	4.50	4.67	4.67
#FFFFFF	4.50	1.00	21.00	21.00
#000000	4.67	21.00	1.00	1.00
##000000	4.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B7DA8

Deuteranopia (green-blind)

#5A71A5

Tritanopia (blue-blind)

#008A8C

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #257fa6;
/* rgb */ color: rgb(37, 127, 166);
/* oklch */ color: oklch(56.3% 0.101 231.7);

Tailwind

colors: {
  custom: {
    50: '#74a4c0',
    500: '#257fa6',
    950: '#000000',
  },
}

SCSS

$custom: #257fa6;
$custom-light: #74a4c0;
$custom-dark: #000000;

JSON

{
  "hex": "#257fa6",
  "rgb": {
    "r": 37,
    "g": 127,
    "b": 166
  },
  "hsl": {
    "h": 198.14,
    "s": 63.547,
    "l": 39.804
  },
  "oklch": {
    "l": 0.56254,
    "c": 0.10114,
    "h": 231.7
  },
  "luminance": 0.18325
}

Semantic roles & 50–950 ramp

primary

#257FA6

secondary

#C38064

accent

#7341E7

background

#F7FAFB

surface

#EEF4F7

border

#C9CED0

text

#090F12

muted

#7B7F81

Preview Lab

Preview with #257FA6

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

Preview Lab → · Contrast checker → · Palette generator →