#284CAB#284CAB
#284CAB is a dark, vivid blue. Relative luminance 0.086; OKLCH L 44.9% C 0.158 H 264.9°. Best body text is #FFFFFF at 7.74:1 contrast (WCAG AA passes).
Color values
| HEX | #284CAB |
|---|---|
| RGB | rgb(40, 76, 171) |
| HSL | hsl(224, 62%, 41%) |
| HSV | hsv(224, 77%, 67%) |
| CMYK | cmyk(76.6%, 55.6%, 0%, 32.9%) |
| CIE-LAB | lab(35.12, 21.88, -54.62) |
| CIE-LCH | lch(35.12, 58.84, 291.83°) |
| OKLab | oklab(44.86% -0.014 -0.1575) |
| OKLCH | oklch(44.86% 0.158 264.9) |
| XYZ | xyz(10.8076, 8.5591, 39.6027) |
| Luminance | 0.0856 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Cobalt
#0047AB
ΔE00 2.39
Sapphire
#0F52BA
ΔE00 3.15
Cobalt (survey)
#1E488F
ΔE00 4.33
Blue Blue
#2242C7
ΔE00 5.31
Dusk Blue
#26538D
ΔE00 5.50
Denim Blue
#3B5B92
ΔE00 6.16
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#284CAB #AB8728
analogous
#288EAB #284CAB #4528AB
triadic
#284CAB #AB284C #4CAB28
tetradic
#284CAB #AB288E #AB8728 #28AB45
square
#284CAB #AB288E #AB8728 #28AB45
split-complementary
#284CAB #AB4528 #8EAB28
monochromatic
#112048 #1C3679 #284CAB #3E67D2 #708EDE
Accessibility & contrast
On white
7.74
#284CAB on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.71
#284CAB on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #284CAB
7.74:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##284CAB | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##284CAB | 1.00 | 7.74 | 2.71 | 7.74 |
| #FFFFFF | 7.74 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.71 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 7.74 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0059AE
Deuteranopia (green-blind)
#004DA9
Tritanopia (blue-blind)
#006374
Achromatopsia (no color)
#535353
Design tokens & code
CSS
--color: #284cab; /* rgb */ color: rgb(40, 76, 171); /* oklch */ color: oklch(44.9% 0.158 264.9);
Tailwind
colors: {
custom: {
50: '#767dc5',
500: '#284cab',
950: '#000000',
},
}SCSS
$custom: #284cab; $custom-light: #767dc5; $custom-dark: #000000;
JSON
{
"hex": "#284cab",
"rgb": {
"r": 40,
"g": 76,
"b": 171
},
"hsl": {
"h": 223.511,
"s": 62.085,
"l": 41.373
},
"oklch": {
"l": 0.44861,
"c": 0.15812,
"h": 264.9
},
"luminance": 0.0856
}Semantic roles & 50–950 ramp
primary
#284CAB
secondary
#C4AC6A
accent
#B843E5
background
#F7F7FC
surface
#EEEEF8
border
#C9C9D1
text
#0A0913
muted
#7C7B82