#2559BD#2559BD

#2559BD is a mid, vivid blue. Relative luminance 0.112; OKLCH L 48.9% C 0.167 H 261.8°. Best body text is #FFFFFF at 6.48:1 contrast (WCAG AA passes).

Color values

HEX	#2559BD
RGB	rgb(37, 89, 189)
HSL	hsl(219, 67%, 44%)
HSV	hsv(219, 80%, 74%)
CMYK	cmyk(80.4%, 52.9%, 0%, 25.9%)
CIE-LAB	lab(39.93, 19.90, -57.44)
CIE-LCH	lch(39.93, 60.79, 289.11°)
OKLab	oklab(48.9% -0.024 -0.1656)
OKLCH	oklch(48.9% 0.167 261.8)
XYZ	xyz(13.5173, 11.2106, 49.5857)
Luminance	0.1121 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2559BD #BD8925

analogous

#25A5BD #2559BD #3D25BD

triadic

#2559BD #BD2559 #59BD25

tetradic

#2559BD #BD25A5 #BD8925 #25BD3D

square

#2559BD #BD25A5 #BD8925 #25BD3D

split-complementary

#2559BD #BD3D25 #A5BD25

monochromatic

#112957 #1B418A #2559BD #4578DB #789DE5

Accessibility & contrast

On white

6.48

#2559BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.24

#2559BD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2559BD

6.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2559BD	#FFFFFF	#000000	##FFFFFF
##2559BD	1.00	6.48	3.24	6.48
#FFFFFF	6.48	1.00	21.00	1.00
#000000	3.24	21.00	1.00	21.00
##FFFFFF	6.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C65C1

Deuteranopia (green-blind)

#0058BB

Tritanopia (blue-blind)

#007182

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #2559bd;
/* rgb */ color: rgb(37, 89, 189);
/* oklch */ color: oklch(48.9% 0.167 261.8);

Tailwind

colors: {
  custom: {
    50: '#7887d2',
    500: '#2559bd',
    950: '#000000',
  },
}

SCSS

$custom: #2559bd;
$custom-light: #7887d2;
$custom-dark: #000000;

JSON

{
  "hex": "#2559bd",
  "rgb": {
    "r": 37,
    "g": 89,
    "b": 189
  },
  "hsl": {
    "h": 219.474,
    "s": 67.257,
    "l": 44.314
  },
  "oklch": {
    "l": 0.48899,
    "c": 0.1673,
    "h": 261.8
  },
  "luminance": 0.11212
}

Semantic roles & 50–950 ramp

primary

#2559BD

secondary

#CCAD72

accent

#AF3EEA

background

#F8F8FD

surface

#EFEFFA

border

#CACAD3

text

#0B0B14

muted

#7C7C83

Preview Lab

Preview with #2559BD

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

Preview Lab → · Contrast checker → · Palette generator →