#2559A6#2559A6

#2559A6 is a mid, vivid blue. Relative luminance 0.103; OKLCH L 47.2% C 0.136 H 258.4°. Best body text is #FFFFFF at 6.87:1 contrast (WCAG AA passes).

Color values

HEX	#2559A6
RGB	rgb(37, 89, 166)
HSL	hsl(216, 64%, 40%)
HSV	hsv(216, 78%, 65%)
CMYK	cmyk(77.7%, 46.4%, 0%, 34.9%)
CIE-LAB	lab(38.36, 10.94, -46.43)
CIE-LCH	lch(38.36, 47.70, 283.26°)
OKLab	oklab(47.19% -0.0272 -0.1332)
OKLCH	oklch(47.19% 0.136 258.4)
XYZ	xyz(11.2157, 10.2899, 37.4640)
Luminance	0.1029 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2559A6 #A67225

analogous

#259AA6 #2559A6 #3225A6

triadic

#2559A6 #A62559 #59A625

tetradic

#2559A6 #A6259A #A67225 #25A632

square

#2559A6 #A6259A #A67225 #25A632

split-complementary

#2559A6 #A63225 #9AA625

monochromatic

#0F2342 #1A3E74 #2559A6 #3675D2 #6897DD

Accessibility & contrast

On white

6.87

#2559A6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.06

#2559A6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2559A6

6.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2559A6	#FFFFFF	#000000	##FFFFFF
##2559A6	1.00	6.87	3.06	6.87
#FFFFFF	6.87	1.00	21.00	1.00
#000000	3.06	21.00	1.00	21.00
##FFFFFF	6.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3061A9

Deuteranopia (green-blind)

#1255A4

Tritanopia (blue-blind)

#006B77

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #2559a6;
/* rgb */ color: rgb(37, 89, 166);
/* oklch */ color: oklch(47.2% 0.136 258.4);

Tailwind

colors: {
  custom: {
    50: '#7387c1',
    500: '#2559a6',
    950: '#000000',
  },
}

SCSS

$custom: #2559a6;
$custom-light: #7387c1;
$custom-dark: #000000;

JSON

{
  "hex": "#2559a6",
  "rgb": {
    "r": 37,
    "g": 89,
    "b": 166
  },
  "hsl": {
    "h": 215.814,
    "s": 63.547,
    "l": 39.804
  },
  "oklch": {
    "l": 0.4719,
    "c": 0.13594,
    "h": 258.4
  },
  "luminance": 0.10291
}

Semantic roles & 50–950 ramp

primary

#2559A6

secondary

#C39D64

accent

#A441E7

background

#F7F8FB

surface

#EEEFF7

border

#C9CAD0

text

#090B12

muted

#7B7C81

Preview Lab

Preview with #2559A6

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

Preview Lab → · Contrast checker → · Palette generator →