#256E9B#256E9B

#256E9B is a mid, moderate cyan. Relative luminance 0.139; OKLCH L 51.5% C 0.100 H 240.3°. Best body text is #FFFFFF at 5.55:1 contrast (WCAG AA passes).

Color values

HEX	#256E9B
RGB	rgb(37, 110, 155)
HSL	hsl(203, 61%, 38%)
HSV	hsv(203, 76%, 61%)
CMYK	cmyk(76.1%, 29%, 0%, 39.2%)
CIE-LAB	lab(44.10, -6.49, -30.77)
CIE-LCH	lch(44.10, 31.45, 258.10°)
OKLab	oklab(51.49% -0.0497 -0.087)
OKLCH	oklch(51.49% 0.1 240.3)
XYZ	xyz(12.2530, 13.9103, 33.0432)
Luminance	0.1391 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#256E9B #9B5225

analogous

#259B8D #256E9B #25339B

triadic

#256E9B #9B256E #6E9B25

tetradic

#256E9B #8D259B #9B5225 #339B25

square

#256E9B #8D259B #9B5225 #339B25

split-complementary

#256E9B #9B2533 #9B8D25

monochromatic

#0D2838 #194B6A #256E9B #3191CC #61ABD9

Accessibility & contrast

On white

5.55

#256E9B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.78

#256E9B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #256E9B

5.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##256E9B	#FFFFFF	#000000	##FFFFFF
##256E9B	1.00	5.55	3.78	5.55
#FFFFFF	5.55	1.00	21.00	1.00
#000000	3.78	21.00	1.00	21.00
##FFFFFF	5.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#596E9D

Deuteranopia (green-blind)

#49639A

Tritanopia (blue-blind)

#00797E

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #256e9b;
/* rgb */ color: rgb(37, 110, 155);
/* oklch */ color: oklch(51.5% 0.100 240.3);

Tailwind

colors: {
  custom: {
    50: '#7197b8',
    500: '#256e9b',
    950: '#000000',
  },
}

SCSS

$custom: #256e9b;
$custom-light: #7197b8;
$custom-dark: #000000;

JSON

{
  "hex": "#256e9b",
  "rgb": {
    "r": 37,
    "g": 110,
    "b": 155
  },
  "hsl": {
    "h": 202.881,
    "s": 61.458,
    "l": 37.647
  },
  "oklch": {
    "l": 0.51487,
    "c": 0.1002,
    "h": 240.3
  },
  "luminance": 0.13912
}

Semantic roles & 50–950 ramp

primary

#256E9B

secondary

#BF825D

accent

#8143E5

background

#F7F9FB

surface

#EDF2F6

border

#C8CCD0

text

#090D11

muted

#7B7E80

Preview Lab

Preview with #256E9B

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

Preview Lab → · Contrast checker → · Palette generator →