Blue#0000FF
#0000FF is a mid, highly saturated blue. Relative luminance 0.072; OKLCH L 45.2% C 0.313 H 264.1°. Best body text is #FFFFFF at 8.59:1 contrast (WCAG AA passes).
Color values
| HEX | #0000FF |
|---|---|
| RGB | rgb(0, 0, 255) |
| HSL | hsl(240, 100%, 50%) |
| HSV | hsv(240, 100%, 100%) |
| CMYK | cmyk(100%, 100%, 0%, 0%) |
| CIE-LAB | lab(32.30, 79.19, -107.86) |
| CIE-LCH | lch(32.30, 133.81, 306.29°) |
| OKLab | oklab(45.2% -0.0325 -0.3115) |
| OKLCH | oklch(45.2% 0.313 264.1) |
| XYZ | xyz(18.0438, 7.2175, 95.0304) |
| Luminance | 0.0722 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Blue
#0000FF
ΔE00 0.00
Primary Blue
#0804F9
ΔE00 0.62
Strong Blue
#0C06F7
ΔE00 0.81
Rich Blue
#021BF9
ΔE00 1.67
Pure Blue
#0203E2
ΔE00 3.59
Ultramarine Blue
#1805DB
ΔE00 4.20
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#0000FF #FFFF00
analogous
#007FFF #0000FF #7F00FF
triadic
#0000FF #FF0000 #00FF00
tetradic
#0000FF #FF0080 #FFFF00 #00FF80
square
#0000FF #FF0080 #FFFF00 #00FF80
split-complementary
#0000FF #FF8000 #80FF00
monochromatic
#000085 #0000C2 #0000FF #3D3DFF #7A7AFF
Accessibility & contrast
On white
8.59
#0000FF on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.44
#0000FF on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #0000FF
8.59:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##0000FF | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##0000FF | 1.00 | 8.59 | 2.44 | 8.59 |
| #FFFFFF | 8.59 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.44 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.59 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0059FF
Deuteranopia (green-blind)
#003DFB
Tritanopia (blue-blind)
#006B96
Achromatopsia (no color)
#4C4C4C
Related colors
#1807E2#200DC7#240FAB#251191#241178#22115F#1E1047#180D31#12071C#000000#502BFF#7145FF#8A5DFF#A074FF#B38BFF#C4A2FF#D4B9FF#E3D0FF#F2E7FF#FFFFFF#2F15EC#4021D9#4A2AC7#5031B4Ocean Blue
#4F42B5
Violet
#8F00FF
Azure
#007FFF
Baby Blue
#89CFF0
Black
#000000
Cerulean
#007BA7
Cobalt
#0047AB
Denim
#1560BD
Palettes with this color
#05445E
#189AB4
#75E6DA
#D4F1F4
Ocean Color Palette
#C0C0C0
#E8E8E8
#606060
#C0C0C0
#A7A7A7
Silver Color Palette
#708090
#C8CFD7
#38434D
#898077
#7E8C9B
Slate Gray Color Palette
#00FF7F
#B7FFC7
#00822F
#C63980
#18DD6F
Spring Green Color Palette
Design tokens & code
CSS
--color: #0000ff; /* rgb */ color: rgb(0, 0, 255); /* oklch */ color: oklch(45.2% 0.313 264.1);
Tailwind
colors: {
custom: {
50: '#8a5dff',
500: '#0000ff',
950: '#000000',
},
}SCSS
$custom: #0000ff; $custom-light: #8a5dff; $custom-dark: #000000;
JSON
{
"hex": "#0000ff",
"rgb": {
"r": 0,
"g": 0,
"b": 255
},
"hsl": {
"h": 240,
"s": 100,
"l": 50
},
"oklch": {
"l": 0.45201,
"c": 0.31322,
"h": 264.1
},
"luminance": 0.0722
}Semantic roles & 50–950 ramp
primary
#0000FF
secondary
#E7E774
accent
#FF29FF
background
#FAF6FF
surface
#F4EBFF
border
#CEC6D7
text
#0F0518
muted
#7F7986