#4243AC#4243AC
#4243AC is a dark, vivid blue. Relative luminance 0.082; OKLCH L 44.7% C 0.164 H 277.1°. Best body text is #FFFFFF at 7.98:1 contrast (WCAG AA passes).
Color values
| HEX | #4243AC |
|---|---|
| RGB | rgb(66, 67, 172) |
| HSL | hsl(239, 45%, 47%) |
| HSV | hsv(239, 62%, 67%) |
| CMYK | cmyk(61.6%, 61%, 0%, 32.5%) |
| CIE-LAB | lab(34.29, 31.93, -56.50) |
| CIE-LCH | lch(34.29, 64.90, 299.47°) |
| OKLab | oklab(44.65% 0.0201 -0.1625) |
| OKLCH | oklch(44.65% 0.164 277.1) |
| XYZ | xyz(11.6979, 8.1502, 39.9784) |
| Luminance | 0.0815 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Ocean Blue
#4F42B5
ΔE00 2.60
Blueberry
#464196
ΔE00 3.62
Sapphire (survey)
#2138AB
ΔE00 4.35
Blue Blue
#2242C7
ΔE00 4.45
Blue With A Hint Of Purple
#533CC6
ΔE00 5.16
Darkslateblue
#483D8B
ΔE00 5.82
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#4243AC #ACAB42
analogous
#4278AC #4243AC #7642AC
triadic
#4243AC #AC4243 #43AC42
tetradic
#4243AC #AC4278 #ACAB42 #42AC76
square
#4243AC #AC4278 #ACAB42 #42AC76
split-complementary
#4243AC #AC7642 #78AC42
monochromatic
#202154 #313280 #4243AC #6768C5 #9394D6
Accessibility & contrast
On white
7.98
#4243AC on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.63
#4243AC on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #4243AC
7.98:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##4243AC | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##4243AC | 1.00 | 7.98 | 2.63 | 7.98 |
| #FFFFFF | 7.98 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.63 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 7.98 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0055AF
Deuteranopia (green-blind)
#004CAA
Tritanopia (blue-blind)
#005D71
Achromatopsia (no color)
#515151
Design tokens & code
CSS
--color: #4243ac; /* rgb */ color: rgb(66, 67, 172); /* oklch */ color: oklch(44.7% 0.164 277.1);
Tailwind
colors: {
custom: {
50: '#8277c6',
500: '#4243ac',
950: '#000000',
},
}SCSS
$custom: #4243ac; $custom-light: #8277c6; $custom-dark: #000000;
JSON
{
"hex": "#4243ac",
"rgb": {
"r": 66,
"g": 67,
"b": 172
},
"hsl": {
"h": 239.434,
"s": 44.538,
"l": 46.667
},
"oklch": {
"l": 0.44652,
"c": 0.16376,
"h": 277.1
},
"luminance": 0.08151
}Semantic roles & 50–950 ramp
primary
#4243AC
secondary
#C1C089
accent
#D354D4
background
#F8F7FC
surface
#F0EDF8
border
#CBC8D1
text
#0B0813
muted
#7C7B82