#28508F#28508F
#28508F is a dark, moderate blue. Relative luminance 0.082; OKLCH L 43.6% C 0.114 H 259.2°. Best body text is #FFFFFF at 7.97:1 contrast (WCAG AA passes).
Color values
| HEX | #28508F |
|---|---|
| RGB | rgb(40, 80, 143) |
| HSL | hsl(217, 56%, 36%) |
| HSV | hsv(217, 72%, 56%) |
| CMYK | cmyk(72%, 44.1%, 0%, 43.9%) |
| CIE-LAB | lab(34.34, 8.37, -39.02) |
| CIE-LCH | lch(34.34, 39.91, 282.11°) |
| OKLab | oklab(43.64% -0.0213 -0.1115) |
| OKLCH | oklch(43.64% 0.114 259.2) |
| XYZ | xyz(8.6999, 8.1707, 27.0999) |
| Luminance | 0.0817 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Dusk Blue
#26538D
ΔE00 1.48
Cobalt (survey)
#1E488F
ΔE00 2.62
Light Navy
#155084
ΔE00 3.52
Denim Blue
#3B5B92
ΔE00 3.89
Light Navy Blue
#2E5A88
ΔE00 4.04
Cobalt
#0047AB
ΔE00 4.85
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#28508F #8F6728
analogous
#28838F #28508F #33288F
triadic
#28508F #8F2850 #508F28
tetradic
#28508F #8F2883 #8F6728 #288F33
square
#28508F #8F2883 #8F6728 #288F33
split-complementary
#28508F #8F3328 #838F28
monochromatic
#0D1A2F #1B355F #28508F #356BBF #5F8CD2
Accessibility & contrast
On white
7.97
#28508F on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.63
#28508F on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #28508F
7.97:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##28508F | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##28508F | 1.00 | 7.97 | 2.63 | 7.97 |
| #FFFFFF | 7.97 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.63 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 7.97 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#325691
Deuteranopia (green-blind)
#204C8E
Tritanopia (blue-blind)
#005F68
Achromatopsia (no color)
#515151
Design tokens & code
CSS
--color: #28508f; /* rgb */ color: rgb(40, 80, 143); /* oklch */ color: oklch(43.6% 0.114 259.2);
Tailwind
colors: {
custom: {
50: '#6f80b0',
500: '#28508f',
950: '#000000',
},
}SCSS
$custom: #28508f; $custom-light: #6f80b0; $custom-dark: #000000;
JSON
{
"hex": "#28508f",
"rgb": {
"r": 40,
"g": 80,
"b": 143
},
"hsl": {
"h": 216.699,
"s": 56.284,
"l": 35.882
},
"oklch": {
"l": 0.43644,
"c": 0.11354,
"h": 259.2
},
"luminance": 0.08172
}Semantic roles & 50–950 ramp
primary
#28508F
secondary
#B8945B
accent
#A548E0
background
#F7F7FA
surface
#EDEEF5
border
#C8C9CF
text
#080A10
muted
#7B7C7F