#2539BC#2539BC
#2539BC is a dark, highly saturated blue. Relative luminance 0.070; OKLCH L 42.7% C 0.204 H 268.5°. Best body text is #FFFFFF at 8.79:1 contrast (WCAG AA passes).
Color values
| HEX | #2539BC |
|---|---|
| RGB | rgb(37, 57, 188) |
| HSL | hsl(232, 67%, 44%) |
| HSV | hsv(232, 80%, 74%) |
| CMYK | cmyk(80.3%, 69.7%, 0%, 26.3%) |
| CIE-LAB | lab(31.69, 40.29, -70.32) |
| CIE-LCH | lch(31.69, 81.05, 299.81°) |
| OKLab | oklab(42.74% -0.0055 -0.2037) |
| OKLCH | oklch(42.74% 0.204 268.5) |
| XYZ | xyz(11.3000, 6.9491, 48.3130) |
| Luminance | 0.0695 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire (survey)
#2138AB
ΔE00 2.45
Blue Blue
#2242C7
ΔE00 2.90
Ocean Blue
#4F42B5
ΔE00 5.07
Blue (survey)
#0343DF
ΔE00 5.14
Blue With A Hint Of Purple
#533CC6
ΔE00 5.50
Blurple
#5539CC
ΔE00 6.05
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#2539BC #BCA825
analogous
#2585BC #2539BC #5D25BC
triadic
#2539BC #BC2539 #39BC25
tetradic
#2539BC #BC2585 #BCA825 #25BC5D
square
#2539BC #BC2585 #BCA825 #25BC5D
split-complementary
#2539BC #BC5D25 #85BC25
monochromatic
#111A56 #1B2989 #2539BC #4458DA #7786E4
Accessibility & contrast
On white
8.79
#2539BC on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.39
#2539BC on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #2539BC
8.79:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##2539BC | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##2539BC | 1.00 | 8.79 | 2.39 | 8.79 |
| #FFFFFF | 8.79 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.39 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.79 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0052C0
Deuteranopia (green-blind)
#0043BA
Tritanopia (blue-blind)
#005E76
Achromatopsia (no color)
#4B4B4B
Design tokens & code
CSS
--color: #2539bc; /* rgb */ color: rgb(37, 57, 188); /* oklch */ color: oklch(42.7% 0.204 268.5);
Tailwind
colors: {
custom: {
50: '#7b70d1',
500: '#2539bc',
950: '#000000',
},
}SCSS
$custom: #2539bc; $custom-light: #7b70d1; $custom-dark: #000000;
JSON
{
"hex": "#2539bc",
"rgb": {
"r": 37,
"g": 57,
"b": 188
},
"hsl": {
"h": 232.053,
"s": 67.111,
"l": 44.118
},
"oklch": {
"l": 0.42744,
"c": 0.20378,
"h": 268.5
},
"luminance": 0.0695
}Semantic roles & 50–950 ramp
primary
#2539BC
secondary
#CCC071
accent
#D33EEA
background
#F8F6FD
surface
#EFECFA
border
#CAC7D3
text
#0B0714
muted
#7C7A83