#28508A#28508A
#28508A is a dark, moderate blue. Relative luminance 0.080; OKLCH L 43.3% C 0.106 H 257.8°. Best body text is #FFFFFF at 8.06:1 contrast (WCAG AA passes).
Color values
| HEX | #28508A |
|---|---|
| RGB | rgb(40, 80, 138) |
| HSL | hsl(216, 55%, 35%) |
| HSV | hsv(216, 71%, 54%) |
| CMYK | cmyk(71%, 42%, 0%, 45.9%) |
| CIE-LAB | lab(34.03, 6.44, -36.45) |
| CIE-LCH | lch(34.03, 37.02, 280.03°) |
| OKLab | oklab(43.31% -0.0224 -0.104) |
| OKLCH | oklch(43.31% 0.106 257.8) |
| XYZ | xyz(8.3295, 8.0226, 25.1494) |
| Luminance | 0.0802 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Dusk Blue
#26538D
ΔE00 1.26
Cobalt (survey)
#1E488F
ΔE00 2.83
Light Navy
#155084
ΔE00 3.02
Light Navy Blue
#2E5A88
ΔE00 3.79
Denim Blue
#3B5B92
ΔE00 4.03
Twilight Blue
#0A437A
ΔE00 4.75
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#28508A #8A6228
analogous
#28818A #28508A #31288A
triadic
#28508A #8A2850 #508A28
tetradic
#28508A #8A2881 #8A6228 #288A31
square
#28508A #8A2881 #8A6228 #288A31
split-complementary
#28508A #8A3128 #818A28
monochromatic
#0C192B #1A345B #28508A #366CB9 #5D8CD0
Accessibility & contrast
On white
8.06
#28508A on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.60
#28508A on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #28508A
8.06:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##28508A | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##28508A | 1.00 | 8.06 | 2.60 | 8.06 |
| #FFFFFF | 8.06 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.60 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.06 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#35558C
Deuteranopia (green-blind)
#254C89
Tritanopia (blue-blind)
#005D66
Achromatopsia (no color)
#505050
Design tokens & code
CSS
--color: #28508a; /* rgb */ color: rgb(40, 80, 138); /* oklch */ color: oklch(43.3% 0.106 257.8);
Tailwind
colors: {
custom: {
50: '#6e80ac',
500: '#28508a',
950: '#000000',
},
}SCSS
$custom: #28508a; $custom-light: #6e80ac; $custom-dark: #000000;
JSON
{
"hex": "#28508a",
"rgb": {
"r": 40,
"g": 80,
"b": 138
},
"hsl": {
"h": 215.51,
"s": 55.056,
"l": 34.902
},
"oklch": {
"l": 0.43307,
"c": 0.10637,
"h": 257.8
},
"luminance": 0.08023
}Semantic roles & 50–950 ramp
primary
#28508A
secondary
#B58F59
accent
#A249DE
background
#F7F7FA
surface
#EDEEF4
border
#C8C9CE
text
#080A10
muted
#7B7C7F