#2559A5#2559A5

#2559A5 is a mid, vivid blue. Relative luminance 0.103; OKLCH L 47.1% C 0.135 H 258.2°. Best body text is #FFFFFF at 6.88:1 contrast (WCAG AA passes).

Color values

HEX	#2559A5
RGB	rgb(37, 89, 165)
HSL	hsl(216, 63%, 40%)
HSV	hsv(216, 78%, 65%)
CMYK	cmyk(77.6%, 46.1%, 0%, 35.3%)
CIE-LAB	lab(38.29, 10.55, -45.93)
CIE-LCH	lch(38.29, 47.13, 282.94°)
OKLab	oklab(47.12% -0.0274 -0.1317)
OKLCH	oklch(47.12% 0.135 258.2)
XYZ	xyz(11.1244, 10.2534, 36.9828)
Luminance	0.1026 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2559A5 #A57125

analogous

#2599A5 #2559A5 #3125A5

triadic

#2559A5 #A52559 #59A525

tetradic

#2559A5 #A52599 #A57125 #25A531

square

#2559A5 #A52599 #A57125 #25A531

split-complementary

#2559A5 #A53125 #99A525

monochromatic

#0F2341 #1A3E73 #2559A5 #3575D2 #6797DD

Accessibility & contrast

On white

6.88

#2559A5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.05

#2559A5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2559A5

6.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2559A5	#FFFFFF	#000000	##FFFFFF
##2559A5	1.00	6.88	3.05	6.88
#FFFFFF	6.88	1.00	21.00	1.00
#000000	3.05	21.00	1.00	21.00
##FFFFFF	6.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3160A8

Deuteranopia (green-blind)

#1455A3

Tritanopia (blue-blind)

#006B77

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #2559a5;
/* rgb */ color: rgb(37, 89, 165);
/* oklch */ color: oklch(47.1% 0.135 258.2);

Tailwind

colors: {
  custom: {
    50: '#7387c0',
    500: '#2559a5',
    950: '#000000',
  },
}

SCSS

$custom: #2559a5;
$custom-light: #7387c0;
$custom-dark: #000000;

JSON

{
  "hex": "#2559a5",
  "rgb": {
    "r": 37,
    "g": 89,
    "b": 165
  },
  "hsl": {
    "h": 215.625,
    "s": 63.366,
    "l": 39.608
  },
  "oklch": {
    "l": 0.47119,
    "c": 0.13456,
    "h": 258.2
  },
  "luminance": 0.10255
}

Semantic roles & 50–950 ramp

primary

#2559A5

secondary

#C39C63

accent

#A341E6

background

#F7F8FB

surface

#EDEFF7

border

#C8CAD0

text

#090B12

muted

#7B7C81

Preview Lab

Preview with #2559A5

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

Preview Lab → · Contrast checker → · Palette generator →