#256D8B#256D8B

#256D8B is a mid, moderate cyan. Relative luminance 0.132; OKLCH L 50.4% C 0.084 H 229.7°. Best body text is #FFFFFF at 5.77:1 contrast (WCAG AA passes).

Color values

HEX	#256D8B
RGB	rgb(37, 109, 139)
HSL	hsl(198, 58%, 35%)
HSV	hsv(198, 73%, 55%)
CMYK	cmyk(73.4%, 21.6%, 0%, 45.5%)
CIE-LAB	lab(43.05, -11.69, -22.89)
CIE-LCH	lch(43.05, 25.70, 242.94°)
OKLab	oklab(50.41% -0.0544 -0.0642)
OKLCH	oklch(50.41% 0.084 229.7)
XYZ	xyz(10.8899, 13.1934, 26.3937)
Luminance	0.1320 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#256D8B #8B4325

analogous

#258B76 #256D8B #253A8B

triadic

#256D8B #8B256D #6D8B25

tetradic

#256D8B #76258B #8B4325 #3A8B25

square

#256D8B #76258B #8B4325 #3A8B25

split-complementary

#256D8B #8B253A #8B7625

monochromatic

#0B212A #18475B #256D8B #3293BB #58AED3

Accessibility & contrast

On white

5.77

#256D8B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.64

#256D8B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #256D8B

5.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##256D8B	#FFFFFF	#000000	##FFFFFF
##256D8B	1.00	5.77	3.64	5.77
#FFFFFF	5.77	1.00	21.00	1.00
#000000	3.64	21.00	1.00	21.00
##FFFFFF	5.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E6B8C

Deuteranopia (green-blind)

#50618B

Tritanopia (blue-blind)

#007577

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #256d8b;
/* rgb */ color: rgb(37, 109, 139);
/* oklch */ color: oklch(50.4% 0.084 229.7);

Tailwind

colors: {
  custom: {
    50: '#6e96ad',
    500: '#256d8b',
    950: '#000000',
  },
}

SCSS

$custom: #256d8b;
$custom-light: #6e96ad;
$custom-dark: #000000;

JSON

{
  "hex": "#256d8b",
  "rgb": {
    "r": 37,
    "g": 109,
    "b": 139
  },
  "hsl": {
    "h": 197.647,
    "s": 57.955,
    "l": 34.51
  },
  "oklch": {
    "l": 0.50409,
    "c": 0.0842,
    "h": 229.7
  },
  "luminance": 0.13195
}

Semantic roles & 50–950 ramp

primary

#256D8B

secondary

#B77255

accent

#7447E1

background

#F7F9FA

surface

#EDF2F4

border

#C8CCCE

text

#080D10

muted

#7B7E7F

Preview Lab

Preview with #256D8B

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

Preview Lab → · Contrast checker → · Palette generator →