#258399#258399

#258399 is a mid, moderate cyan. Relative luminance 0.189; OKLCH L 56.6% C 0.090 H 217.2°. Best body text is #000000 at 4.79:1 contrast (WCAG AA passes).

Color values

HEX	#258399
RGB	rgb(37, 131, 153)
HSL	hsl(191, 61%, 37%)
HSV	hsv(191, 76%, 60%)
CMYK	cmyk(75.8%, 14.4%, 0%, 40%)
CIE-LAB	lab(50.60, -19.12, -19.54)
CIE-LCH	lch(50.60, 27.34, 225.61°)
OKLab	oklab(56.65% -0.0718 -0.0545)
OKLCH	oklch(56.65% 0.09 217.2)
XYZ	xyz(14.6266, 18.9241, 33.0127)
Luminance	0.1893 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#258399 #993B25

analogous

#259975 #258399 #254999

triadic

#258399 #992583 #839925

tetradic

#258399 #752599 #993B25 #499925

square

#258399 #752599 #993B25 #499925

split-complementary

#258399 #992549 #997525

monochromatic

#0D2F36 #195968 #258399 #31ADCA #60C2D9

Accessibility & contrast

On white

4.39

#258399 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.79

#258399 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #258399

4.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##258399	#FFFFFF	#000000	##000000
##258399	1.00	4.39	4.79	4.79
#FFFFFF	4.39	1.00	21.00	21.00
#000000	4.79	21.00	1.00	1.00
##000000	4.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#757F9A

Deuteranopia (green-blind)

#657399

Tritanopia (blue-blind)

#008B8A

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #258399;
/* rgb */ color: rgb(37, 131, 153);
/* oklch */ color: oklch(56.6% 0.090 217.2);

Tailwind

colors: {
  custom: {
    50: '#72a7b7',
    500: '#258399',
    950: '#000000',
  },
}

SCSS

$custom: #258399;
$custom-light: #72a7b7;
$custom-dark: #000000;

JSON

{
  "hex": "#258399",
  "rgb": {
    "r": 37,
    "g": 131,
    "b": 153
  },
  "hsl": {
    "h": 191.379,
    "s": 61.053,
    "l": 37.255
  },
  "oklch": {
    "l": 0.56647,
    "c": 0.09014,
    "h": 217.2
  },
  "luminance": 0.18926
}

Semantic roles & 50–950 ramp

primary

#258399

secondary

#BE6F5C

accent

#6244E4

background

#F7FAFB

surface

#EDF4F6

border

#C8CED0

text

#090F11

muted

#7B7F80

Preview Lab

Preview with #258399

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

Preview Lab → · Contrast checker → · Palette generator →