#255CB4#255CB4
#255CB4 is a mid, vivid blue. Relative luminance 0.113; OKLCH L 48.9% C 0.151 H 259.6°. Best body text is #FFFFFF at 6.42:1 contrast (WCAG AA passes).
Color values
| HEX | #255CB4 |
|---|---|
| RGB | rgb(37, 92, 180) |
| HSL | hsl(217, 66%, 43%) |
| HSV | hsv(217, 79%, 71%) |
| CMYK | cmyk(79.4%, 48.9%, 0%, 29.4%) |
| CIE-LAB | lab(40.15, 14.43, -51.82) |
| CIE-LCH | lch(40.15, 53.79, 285.56°) |
| OKLab | oklab(48.86% -0.0274 -0.149) |
| OKLCH | oklch(48.86% 0.151 259.6) |
| XYZ | xyz(12.8253, 11.3414, 44.6843) |
| Luminance | 0.1134 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Denim
#1560BD
ΔE00 2.03
Sapphire
#0F52BA
ΔE00 3.43
Denim Blue
#3B5B92
ΔE00 4.47
Light Navy Blue
#2E5A88
ΔE00 5.16
Denim (survey)
#3B638C
ΔE00 5.18
Mid Blue
#276AB3
ΔE00 5.30
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#255CB4 #B47D25
analogous
#25A4B4 #255CB4 #3525B4
triadic
#255CB4 #B4255C #5CB425
tetradic
#255CB4 #B425A4 #B47D25 #25B435
square
#255CB4 #B425A4 #B47D25 #25B435
split-complementary
#255CB4 #B43525 #A4B425
monochromatic
#10284E #1B4281 #255CB4 #3F79D7 #719DE2
Accessibility & contrast
On white
6.42
#255CB4 on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
3.27
#255CB4 on #000000
AA ✗AA large ✓AAA ✗
Best text color
#FFFFFF on #255CB4
6.42:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##255CB4 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##255CB4 | 1.00 | 6.42 | 3.27 | 6.42 |
| #FFFFFF | 6.42 | 1.00 | 21.00 | 1.00 |
| #000000 | 3.27 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 6.42 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#2966B7
Deuteranopia (green-blind)
#0059B2
Tritanopia (blue-blind)
#00717F
Achromatopsia (no color)
#5F5F5F
Design tokens & code
CSS
--color: #255cb4; /* rgb */ color: rgb(37, 92, 180); /* oklch */ color: oklch(48.9% 0.151 259.6);
Tailwind
colors: {
custom: {
50: '#7689cb',
500: '#255cb4',
950: '#000000',
},
}SCSS
$custom: #255cb4; $custom-light: #7689cb; $custom-dark: #000000;
JSON
{
"hex": "#255cb4",
"rgb": {
"r": 37,
"g": 92,
"b": 180
},
"hsl": {
"h": 216.923,
"s": 65.899,
"l": 42.549
},
"oklch": {
"l": 0.48865,
"c": 0.15147,
"h": 259.6
},
"luminance": 0.11343
}Semantic roles & 50–950 ramp
primary
#255CB4
secondary
#C9A56C
accent
#A83FE9
background
#F7F8FC
surface
#EEF0F9
border
#C9CBD2
text
#0A0B13
muted
#7C7C82