#284BB0#284BB0
#284BB0 is a mid, vivid blue. Relative luminance 0.086; OKLCH L 45.1% C 0.166 H 265.5°. Best body text is #FFFFFF at 7.71:1 contrast (WCAG AA passes).
Color values
| HEX | #284BB0 |
|---|---|
| RGB | rgb(40, 75, 176) |
| HSL | hsl(225, 63%, 42%) |
| HSV | hsv(225, 77%, 69%) |
| CMYK | cmyk(77.3%, 57.4%, 0%, 31%) |
| CIE-LAB | lab(35.24, 24.47, -57.41) |
| CIE-LCH | lch(35.24, 62.41, 293.08°) |
| OKLab | oklab(45.07% -0.0129 -0.1657) |
| OKLCH | oklch(45.07% 0.166 265.5) |
| XYZ | xyz(11.2249, 8.6166, 42.1375) |
| Luminance | 0.0862 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Cobalt
#0047AB
ΔE00 2.59
Sapphire
#0F52BA
ΔE00 3.30
Blue Blue
#2242C7
ΔE00 4.46
Cobalt (survey)
#1E488F
ΔE00 5.05
Sapphire (survey)
#2138AB
ΔE00 5.91
Dusk Blue
#26538D
ΔE00 6.29
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#284BB0 #B08D28
analogous
#288FB0 #284BB0 #4928B0
triadic
#284BB0 #B0284B #4BB028
tetradic
#284BB0 #B0288F #B08D28 #28B049
square
#284BB0 #B0288F #B08D28 #28B049
split-complementary
#284BB0 #B04928 #8FB028
monochromatic
#11204C #1D367E #284BB0 #4167D4 #738FDF
Accessibility & contrast
On white
7.71
#284BB0 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.72
#284BB0 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #284BB0
7.71:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##284BB0 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##284BB0 | 1.00 | 7.71 | 2.72 | 7.71 |
| #FFFFFF | 7.71 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.72 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 7.71 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0059B3
Deuteranopia (green-blind)
#004DAE
Tritanopia (blue-blind)
#006476
Achromatopsia (no color)
#535353
Design tokens & code
CSS
--color: #284bb0; /* rgb */ color: rgb(40, 75, 176); /* oklch */ color: oklch(45.1% 0.166 265.5);
Tailwind
colors: {
custom: {
50: '#777cc8',
500: '#284bb0',
950: '#000000',
},
}SCSS
$custom: #284bb0; $custom-light: #777cc8; $custom-dark: #000000;
JSON
{
"hex": "#284bb0",
"rgb": {
"r": 40,
"g": 75,
"b": 176
},
"hsl": {
"h": 224.559,
"s": 62.963,
"l": 42.353
},
"oklch": {
"l": 0.45069,
"c": 0.1662,
"h": 265.5
},
"luminance": 0.08618
}Semantic roles & 50–950 ramp
primary
#284BB0
secondary
#C6B06D
accent
#BC42E6
background
#F7F7FC
surface
#EEEEF8
border
#C9C9D1
text
#0A0913
muted
#7C7B82