#256D99#256D99

#256D99 is a mid, moderate cyan. Relative luminance 0.136; OKLCH L 51.1% C 0.099 H 240.0°. Best body text is #FFFFFF at 5.64:1 contrast (WCAG AA passes).

Color values

HEX	#256D99
RGB	rgb(37, 109, 153)
HSL	hsl(203, 61%, 37%)
HSV	hsv(203, 76%, 60%)
CMYK	cmyk(75.8%, 28.8%, 0%, 40%)
CIE-LAB	lab(43.70, -6.62, -30.23)
CIE-LCH	lch(43.70, 30.94, 257.64°)
OKLab	oklab(51.13% -0.0494 -0.0854)
OKLCH	oklch(51.13% 0.099 240)
XYZ	xyz(11.9791, 13.6291, 32.1302)
Luminance	0.1363 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#256D99 #995125

analogous

#25998B #256D99 #253399

triadic

#256D99 #99256D #6D9925

tetradic

#256D99 #8B2599 #995125 #339925

square

#256D99 #8B2599 #995125 #339925

split-complementary

#256D99 #992533 #998B25

monochromatic

#0D2736 #194A68 #256D99 #3190CA #60ABD9

Accessibility & contrast

On white

5.64

#256D99 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.73

#256D99 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #256D99

5.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##256D99	#FFFFFF	#000000	##FFFFFF
##256D99	1.00	5.64	3.73	5.64
#FFFFFF	5.64	1.00	21.00	1.00
#000000	3.73	21.00	1.00	21.00
##FFFFFF	5.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#586D9B

Deuteranopia (green-blind)

#496298

Tritanopia (blue-blind)

#00787C

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #256d99;
/* rgb */ color: rgb(37, 109, 153);
/* oklch */ color: oklch(51.1% 0.099 240.0);

Tailwind

colors: {
  custom: {
    50: '#7096b7',
    500: '#256d99',
    950: '#000000',
  },
}

SCSS

$custom: #256d99;
$custom-light: #7096b7;
$custom-dark: #000000;

JSON

{
  "hex": "#256d99",
  "rgb": {
    "r": 37,
    "g": 109,
    "b": 153
  },
  "hsl": {
    "h": 202.759,
    "s": 61.053,
    "l": 37.255
  },
  "oklch": {
    "l": 0.51132,
    "c": 0.09868,
    "h": 240
  },
  "luminance": 0.13631
}

Semantic roles & 50–950 ramp

primary

#256D99

secondary

#BE815C

accent

#8144E4

background

#F7F9FB

surface

#EDF2F6

border

#C8CCD0

text

#090D11

muted

#7B7E80

Preview Lab

Preview with #256D99

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

Preview Lab → · Contrast checker → · Palette generator →