#2537B2#2537B2
#2537B2 is a dark, vivid blue. Relative luminance 0.063; OKLCH L 41.4% C 0.193 H 268.9°. Best body text is #FFFFFF at 9.26:1 contrast (WCAG AA passes).
Color values
| HEX | #2537B2 |
|---|---|
| RGB | rgb(37, 55, 178) |
| HSL | hsl(232, 66%, 42%) |
| HSV | hsv(232, 79%, 70%) |
| CMYK | cmyk(79.2%, 69.1%, 0%, 30.2%) |
| CIE-LAB | lab(30.25, 37.95, -66.76) |
| CIE-LCH | lch(30.25, 76.79, 299.62°) |
| OKLab | oklab(41.41% -0.0036 -0.1933) |
| OKLCH | oklch(41.41% 0.193 268.9) |
| XYZ | xyz(10.1622, 6.3389, 42.7988) |
| Luminance | 0.0634 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire (survey)
#2138AB
ΔE00 1.23
Blue Blue
#2242C7
ΔE00 4.07
Ocean Blue
#4F42B5
ΔE00 5.48
Blueberry
#464196
ΔE00 6.31
Blue With A Hint Of Purple
#533CC6
ΔE00 6.32
Blue (survey)
#0343DF
ΔE00 6.51
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#2537B2 #B2A025
analogous
#257EB2 #2537B2 #5925B2
triadic
#2537B2 #B22537 #37B225
tetradic
#2537B2 #B2257E #B2A025 #25B259
square
#2537B2 #B2257E #B2A025 #25B259
split-complementary
#2537B2 #B25925 #7EB225
monochromatic
#10184D #1A277F #2537B2 #3D51D7 #707FE1
Accessibility & contrast
On white
9.26
#2537B2 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.27
#2537B2 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #2537B2
9.26:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##2537B2 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##2537B2 | 1.00 | 9.26 | 2.27 | 9.26 |
| #FFFFFF | 9.26 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.27 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 9.26 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#004EB6
Deuteranopia (green-blind)
#0040B0
Tritanopia (blue-blind)
#005970
Achromatopsia (no color)
#474747
Design tokens & code
CSS
--color: #2537b2; /* rgb */ color: rgb(37, 55, 178); /* oklch */ color: oklch(41.4% 0.193 268.9);
Tailwind
colors: {
custom: {
50: '#786eca',
500: '#2537b2',
950: '#000000',
},
}SCSS
$custom: #2537b2; $custom-light: #786eca; $custom-dark: #000000;
JSON
{
"hex": "#2537b2",
"rgb": {
"r": 37,
"g": 55,
"b": 178
},
"hsl": {
"h": 232.34,
"s": 65.581,
"l": 42.157
},
"oklch": {
"l": 0.41406,
"c": 0.19337,
"h": 268.9
},
"luminance": 0.0634
}Semantic roles & 50–950 ramp
primary
#2537B2
secondary
#C8BC6B
accent
#D33FE9
background
#F8F6FC
surface
#EFECF9
border
#CAC7D2
text
#0B0713
muted
#7C7A82