#284F8D#284F8D
#284F8D is a dark, moderate blue. Relative luminance 0.080; OKLCH L 43.3% C 0.112 H 259.3°. Best body text is #FFFFFF at 8.10:1 contrast (WCAG AA passes).
Color values
| HEX | #284F8D |
|---|---|
| RGB | rgb(40, 79, 141) |
| HSL | hsl(217, 56%, 35%) |
| HSV | hsv(217, 72%, 55%) |
| CMYK | cmyk(71.6%, 44%, 0%, 44.7%) |
| CIE-LAB | lab(33.91, 8.26, -38.48) |
| CIE-LCH | lch(33.91, 39.36, 282.12°) |
| OKLab | oklab(43.27% -0.0207 -0.1099) |
| OKLCH | oklch(43.27% 0.112 259.3) |
| XYZ | xyz(8.4770, 7.9653, 26.2848) |
| Luminance | 0.0797 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Dusk Blue
#26538D
ΔE00 1.73
Cobalt (survey)
#1E488F
ΔE00 2.34
Light Navy
#155084
ΔE00 3.54
Denim Blue
#3B5B92
ΔE00 4.17
Light Navy Blue
#2E5A88
ΔE00 4.29
Twilight Blue
#0A437A
ΔE00 4.79
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#284F8D #8D6628
analogous
#28818D #284F8D #34288D
triadic
#284F8D #8D284F #4F8D28
tetradic
#284F8D #8D2881 #8D6628 #288D34
square
#284F8D #8D2881 #8D6628 #288D34
split-complementary
#284F8D #8D3428 #818D28
monochromatic
#0D1A2E #1A345D #284F8D #366ABD #5E8BD1
Accessibility & contrast
On white
8.10
#284F8D on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.59
#284F8D on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #284F8D
8.10:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##284F8D | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##284F8D | 1.00 | 8.10 | 2.59 | 8.10 |
| #FFFFFF | 8.10 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.59 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.10 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#31558F
Deuteranopia (green-blind)
#204B8C
Tritanopia (blue-blind)
#005D67
Achromatopsia (no color)
#505050
Design tokens & code
CSS
--color: #284f8d; /* rgb */ color: rgb(40, 79, 141); /* oklch */ color: oklch(43.3% 0.112 259.3);
Tailwind
colors: {
custom: {
50: '#6f7faf',
500: '#284f8d',
950: '#000000',
},
}SCSS
$custom: #284f8d; $custom-light: #6f7faf; $custom-dark: #000000;
JSON
{
"hex": "#284f8d",
"rgb": {
"r": 40,
"g": 79,
"b": 141
},
"hsl": {
"h": 216.832,
"s": 55.801,
"l": 35.49
},
"oklch": {
"l": 0.43274,
"c": 0.11189,
"h": 259.3
},
"luminance": 0.07966
}Semantic roles & 50–950 ramp
primary
#284F8D
secondary
#B7935A
accent
#A549DF
background
#F7F7FA
surface
#EDEEF4
border
#C8C9CE
text
#080A10
muted
#7B7C7F