#2523B0#2523B0
#2523B0 is a dark, highly saturated blue. Relative luminance 0.047; OKLCH L 38.3% C 0.210 H 271.2°. Best body text is #FFFFFF at 10.79:1 contrast (WCAG AA passes).
Color values
| HEX | #2523B0 |
|---|---|
| RGB | rgb(37, 35, 176) |
| HSL | hsl(241, 67%, 41%) |
| HSV | hsv(241, 80%, 69%) |
| CMYK | cmyk(79%, 80.1%, 0%, 31%) |
| CIE-LAB | lab(25.95, 48.74, -72.68) |
| CIE-LCH | lch(25.95, 87.51, 303.85°) |
| OKLab | oklab(38.28% 0.0042 -0.2104) |
| OKLCH | oklch(38.28% 0.21 271.2) |
| XYZ | xyz(9.1978, 4.7289, 41.4939) |
| Luminance | 0.0473 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Indigo Blue
#3A18B1
ΔE00 2.76
True Blue
#010FCC
ΔE00 3.99
Ultramarine
#2000B1
ΔE00 4.48
Cobalt Blue
#030AA7
ΔE00 4.52
Mediumblue
#0000CD
ΔE00 4.76
Royal Blue (survey)
#0504AA
ΔE00 4.82
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#2523B0 #AEB023
analogous
#2368B0 #2523B0 #6C23B0
triadic
#2523B0 #B02523 #23B025
tetradic
#2523B0 #B02368 #AEB023 #23B06C
square
#2523B0 #B02368 #AEB023 #23B06C
split-complementary
#2523B0 #B06C23 #68B023
monochromatic
#100F4A #1A197D #2523B0 #3B39D8 #6D6CE2
Accessibility & contrast
On white
10.79
#2523B0 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
1.95
#2523B0 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #2523B0
10.79:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##2523B0 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##2523B0 | 1.00 | 10.79 | 1.95 | 10.79 |
| #FFFFFF | 10.79 | 1.00 | 21.00 | 1.00 |
| #000000 | 1.95 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 10.79 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0044B4
Deuteranopia (green-blind)
#0036AE
Tritanopia (blue-blind)
#004F6A
Achromatopsia (no color)
#3D3D3D
Design tokens & code
CSS
--color: #2523b0; /* rgb */ color: rgb(37, 35, 176); /* oklch */ color: oklch(38.3% 0.210 271.2);
Tailwind
colors: {
custom: {
50: '#7a61c9',
500: '#2523b0',
950: '#000000',
},
}SCSS
$custom: #2523b0; $custom-light: #7a61c9; $custom-dark: #000000;
JSON
{
"hex": "#2523b0",
"rgb": {
"r": 37,
"g": 35,
"b": 176
},
"hsl": {
"h": 240.851,
"s": 66.825,
"l": 41.373
},
"oklch": {
"l": 0.38278,
"c": 0.21043,
"h": 271.2
},
"luminance": 0.0473
}Semantic roles & 50–950 ramp
primary
#2523B0
secondary
#C6C867
accent
#EA3EE7
background
#F8F5FC
surface
#EFEAF8
border
#CAC6D1
text
#0B0513
muted
#7C7982