#256D9B#256D9B

#256D9B is a mid, moderate cyan. Relative luminance 0.137; OKLCH L 51.2% C 0.101 H 241.1°. Best body text is #FFFFFF at 5.62:1 contrast (WCAG AA passes).

Color values

HEX	#256D9B
RGB	rgb(37, 109, 155)
HSL	hsl(203, 61%, 38%)
HSV	hsv(203, 76%, 61%)
CMYK	cmyk(76.1%, 29.7%, 0%, 39.2%)
CIE-LAB	lab(43.79, -5.89, -31.26)
CIE-LCH	lch(43.79, 31.81, 259.34°)
OKLab	oklab(51.24% -0.0487 -0.0884)
OKLCH	oklch(51.24% 0.101 241.1)
XYZ	xyz(12.1457, 13.6957, 33.0074)
Luminance	0.1370 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#256D9B #9B5325

analogous

#259B8E #256D9B #25329B

triadic

#256D9B #9B256D #6D9B25

tetradic

#256D9B #8E259B #9B5325 #329B25

square

#256D9B #8E259B #9B5325 #329B25

split-complementary

#256D9B #9B2532 #9B8E25

monochromatic

#0D2838 #194A6A #256D9B #3190CC #61AAD9

Accessibility & contrast

On white

5.62

#256D9B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.74

#256D9B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #256D9B

5.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##256D9B	#FFFFFF	#000000	##FFFFFF
##256D9B	1.00	5.62	3.74	5.62
#FFFFFF	5.62	1.00	21.00	1.00
#000000	3.74	21.00	1.00	21.00
##FFFFFF	5.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#586E9D

Deuteranopia (green-blind)

#47639A

Tritanopia (blue-blind)

#00787D

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #256d9b;
/* rgb */ color: rgb(37, 109, 155);
/* oklch */ color: oklch(51.2% 0.101 241.1);

Tailwind

colors: {
  custom: {
    50: '#7196b8',
    500: '#256d9b',
    950: '#000000',
  },
}

SCSS

$custom: #256d9b;
$custom-light: #7196b8;
$custom-dark: #000000;

JSON

{
  "hex": "#256d9b",
  "rgb": {
    "r": 37,
    "g": 109,
    "b": 155
  },
  "hsl": {
    "h": 203.39,
    "s": 61.458,
    "l": 37.647
  },
  "oklch": {
    "l": 0.51241,
    "c": 0.10096,
    "h": 241.1
  },
  "luminance": 0.13697
}

Semantic roles & 50–950 ramp

primary

#256D9B

secondary

#BF835D

accent

#8243E5

background

#F7F9FB

surface

#EDF2F6

border

#C8CCD0

text

#090D11

muted

#7B7E80

Preview Lab

Preview with #256D9B

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

Preview Lab → · Contrast checker → · Palette generator →