#2559B1#2559B1
#2559B1 is a mid, vivid blue. Relative luminance 0.107; OKLCH L 48.0% C 0.151 H 260.3°. Best body text is #FFFFFF at 6.68:1 contrast (WCAG AA passes).
Color values
| HEX | #2559B1 |
|---|---|
| RGB | rgb(37, 89, 177) |
| HSL | hsl(218, 65%, 42%) |
| HSV | hsv(218, 79%, 69%) |
| CMYK | cmyk(79.1%, 49.7%, 0%, 30.6%) |
| CIE-LAB | lab(39.09, 15.23, -51.76) |
| CIE-LCH | lch(39.09, 53.96, 286.40°) |
| OKLab | oklab(47.99% -0.0255 -0.1489) |
| OKLCH | oklch(47.99% 0.151 260.3) |
| XYZ | xyz(12.2683, 10.7110, 43.0073) |
| Luminance | 0.1071 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire
#0F52BA
ΔE00 2.60
Denim
#1560BD
ΔE00 3.05
Denim Blue
#3B5B92
ΔE00 4.18
Dusk Blue
#26538D
ΔE00 4.72
Light Navy Blue
#2E5A88
ΔE00 4.95
Denim (survey)
#3B638C
ΔE00 5.50
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#2559B1 #B17D25
analogous
#259FB1 #2559B1 #3725B1
triadic
#2559B1 #B12559 #59B125
tetradic
#2559B1 #B1259F #B17D25 #25B137
square
#2559B1 #B1259F #B17D25 #25B137
split-complementary
#2559B1 #B13725 #9FB125
monochromatic
#10264C #1A407E #2559B1 #3D76D6 #6F9AE1
Accessibility & contrast
On white
6.68
#2559B1 on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
3.14
#2559B1 on #000000
AA ✗AA large ✓AAA ✗
Best text color
#FFFFFF on #2559B1
6.68:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##2559B1 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##2559B1 | 1.00 | 6.68 | 3.14 | 6.68 |
| #FFFFFF | 6.68 | 1.00 | 21.00 | 1.00 |
| #000000 | 3.14 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 6.68 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#2463B4
Deuteranopia (green-blind)
#0056AF
Tritanopia (blue-blind)
#006E7C
Achromatopsia (no color)
#5C5C5C
Design tokens & code
CSS
--color: #2559b1; /* rgb */ color: rgb(37, 89, 177); /* oklch */ color: oklch(48.0% 0.151 260.3);
Tailwind
colors: {
custom: {
50: '#7587c9',
500: '#2559b1',
950: '#000000',
},
}SCSS
$custom: #2559b1; $custom-light: #7587c9; $custom-dark: #000000;
JSON
{
"hex": "#2559b1",
"rgb": {
"r": 37,
"g": 89,
"b": 177
},
"hsl": {
"h": 217.714,
"s": 65.421,
"l": 41.961
},
"oklch": {
"l": 0.47987,
"c": 0.15104,
"h": 260.3
},
"luminance": 0.10712
}Semantic roles & 50–950 ramp
primary
#2559B1
secondary
#C8A56A
accent
#AA3FE8
background
#F7F8FC
surface
#EEEFF8
border
#C9CAD1
text
#0A0B13
muted
#7C7C82