#256D8A#256D8A

#256D8A is a mid, moderate cyan. Relative luminance 0.132; OKLCH L 50.4% C 0.083 H 228.8°. Best body text is #FFFFFF at 5.78:1 contrast (WCAG AA passes).

Color values

HEX	#256D8A
RGB	rgb(37, 109, 138)
HSL	hsl(197, 58%, 34%)
HSV	hsv(197, 73%, 54%)
CMYK	cmyk(73.2%, 21%, 0%, 45.9%)
CIE-LAB	lab(43.01, -12.05, -22.36)
CIE-LCH	lch(43.01, 25.40, 241.68°)
OKLab	oklab(50.36% -0.0548 -0.0627)
OKLCH	oklch(50.36% 0.083 228.8)
XYZ	xyz(10.8172, 13.1643, 26.0107)
Luminance	0.1317 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#256D8A #8A4225

analogous

#258A75 #256D8A #253B8A

triadic

#256D8A #8A256D #6D8A25

tetradic

#256D8A #75258A #8A4225 #3B8A25

square

#256D8A #75258A #8A4225 #3B8A25

split-complementary

#256D8A #8A253B #8A7525

monochromatic

#0B2129 #18475A #256D8A #3293BA #57AFD2

Accessibility & contrast

On white

5.78

#256D8A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.63

#256D8A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #256D8A

5.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##256D8A	#FFFFFF	#000000	##FFFFFF
##256D8A	1.00	5.78	3.63	5.78
#FFFFFF	5.78	1.00	21.00	1.00
#000000	3.63	21.00	1.00	21.00
##FFFFFF	5.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E6B8B

Deuteranopia (green-blind)

#50618A

Tritanopia (blue-blind)

#007577

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #256d8a;
/* rgb */ color: rgb(37, 109, 138);
/* oklch */ color: oklch(50.4% 0.083 228.8);

Tailwind

colors: {
  custom: {
    50: '#6e96ac',
    500: '#256d8a',
    950: '#000000',
  },
}

SCSS

$custom: #256d8a;
$custom-light: #6e96ac;
$custom-dark: #000000;

JSON

{
  "hex": "#256d8a",
  "rgb": {
    "r": 37,
    "g": 109,
    "b": 138
  },
  "hsl": {
    "h": 197.228,
    "s": 57.714,
    "l": 34.314
  },
  "oklch": {
    "l": 0.5036,
    "c": 0.08329,
    "h": 228.8
  },
  "luminance": 0.13166
}

Semantic roles & 50–950 ramp

primary

#256D8A

secondary

#B77054

accent

#7347E1

background

#F7F9FA

surface

#EDF2F4

border

#C8CCCE

text

#080D10

muted

#7B7E7F

Preview Lab

Preview with #256D8A

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

Preview Lab → · Contrast checker → · Palette generator →