#2558A6#2558A6

#2558A6 is a mid, vivid blue. Relative luminance 0.101; OKLCH L 47.0% C 0.137 H 258.9°. Best body text is #FFFFFF at 6.94:1 contrast (WCAG AA passes).

Color values

HEX	#2558A6
RGB	rgb(37, 88, 166)
HSL	hsl(216, 64%, 40%)
HSV	hsv(216, 78%, 65%)
CMYK	cmyk(77.7%, 47%, 0%, 34.9%)
CIE-LAB	lab(38.07, 11.60, -46.90)
CIE-LCH	lch(38.07, 48.31, 283.89°)
OKLab	oklab(46.96% -0.0264 -0.1346)
OKLCH	oklch(46.96% 0.137 258.9)
XYZ	xyz(11.1331, 10.1247, 37.4365)
Luminance	0.1013 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2558A6 #A67325

analogous

#2599A6 #2558A6 #3225A6

triadic

#2558A6 #A62558 #58A625

tetradic

#2558A6 #A62599 #A67325 #25A632

square

#2558A6 #A62599 #A67325 #25A632

split-complementary

#2558A6 #A63225 #99A625

monochromatic

#0F2342 #1A3D74 #2558A6 #3674D2 #6896DD

Accessibility & contrast

On white

6.94

#2558A6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.03

#2558A6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2558A6

6.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2558A6	#FFFFFF	#000000	##FFFFFF
##2558A6	1.00	6.94	3.03	6.94
#FFFFFF	6.94	1.00	21.00	1.00
#000000	3.03	21.00	1.00	21.00
##FFFFFF	6.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E60A9

Deuteranopia (green-blind)

#0D54A4

Tritanopia (blue-blind)

#006B77

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #2558a6;
/* rgb */ color: rgb(37, 88, 166);
/* oklch */ color: oklch(47.0% 0.137 258.9);

Tailwind

colors: {
  custom: {
    50: '#7386c1',
    500: '#2558a6',
    950: '#000000',
  },
}

SCSS

$custom: #2558a6;
$custom-light: #7386c1;
$custom-dark: #000000;

JSON

{
  "hex": "#2558a6",
  "rgb": {
    "r": 37,
    "g": 88,
    "b": 166
  },
  "hsl": {
    "h": 216.279,
    "s": 63.547,
    "l": 39.804
  },
  "oklch": {
    "l": 0.46964,
    "c": 0.13714,
    "h": 258.9
  },
  "luminance": 0.10126
}

Semantic roles & 50–950 ramp

primary

#2558A6

secondary

#C39D64

accent

#A541E7

background

#F7F8FB

surface

#EEEFF7

border

#C9CAD0

text

#090B12

muted

#7B7C81

Preview Lab

Preview with #2558A6

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

Preview Lab → · Contrast checker → · Palette generator →