#2559AF#2559AF

#2559AF is a mid, vivid blue. Relative luminance 0.106; OKLCH L 47.8% C 0.148 H 260.0°. Best body text is #FFFFFF at 6.72:1 contrast (WCAG AA passes).

Color values

HEX	#2559AF
RGB	rgb(37, 89, 175)
HSL	hsl(217, 65%, 42%)
HSV	hsv(217, 79%, 69%)
CMYK	cmyk(78.9%, 49.1%, 0%, 31.4%)
CIE-LAB	lab(38.95, 14.45, -50.80)
CIE-LCH	lch(38.95, 52.82, 285.88°)
OKLab	oklab(47.84% -0.0258 -0.1461)
OKLCH	oklch(47.84% 0.148 260)
XYZ	xyz(12.0704, 10.6318, 41.9651)
Luminance	0.1063 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2559AF #AF7B25

analogous

#259EAF #2559AF #3625AF

triadic

#2559AF #AF2559 #59AF25

tetradic

#2559AF #AF259E #AF7B25 #25AF36

square

#2559AF #AF259E #AF7B25 #25AF36

split-complementary

#2559AF #AF3625 #9EAF25

monochromatic

#10264A #1A3F7C #2559AF #3C76D6 #6E99E0

Accessibility & contrast

On white

6.72

#2559AF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.13

#2559AF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2559AF

6.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2559AF	#FFFFFF	#000000	##FFFFFF
##2559AF	1.00	6.72	3.13	6.72
#FFFFFF	6.72	1.00	21.00	1.00
#000000	3.13	21.00	1.00	21.00
##FFFFFF	6.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2762B2

Deuteranopia (green-blind)

#0056AD

Tritanopia (blue-blind)

#006E7B

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #2559af;
/* rgb */ color: rgb(37, 89, 175);
/* oklch */ color: oklch(47.8% 0.148 260.0);

Tailwind

colors: {
  custom: {
    50: '#7587c7',
    500: '#2559af',
    950: '#000000',
  },
}

SCSS

$custom: #2559af;
$custom-light: #7587c7;
$custom-dark: #000000;

JSON

{
  "hex": "#2559af",
  "rgb": {
    "r": 37,
    "g": 89,
    "b": 175
  },
  "hsl": {
    "h": 217.391,
    "s": 65.094,
    "l": 41.569
  },
  "oklch": {
    "l": 0.47839,
    "c": 0.1483,
    "h": 260
  },
  "luminance": 0.10633
}

Semantic roles & 50–950 ramp

primary

#2559AF

secondary

#C7A369

accent

#A940E8

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #2559AF

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

Preview Lab → · Contrast checker → · Palette generator →