#283CAF#283CAF
#283CAF is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.1% C 0.183 H 269.0°. Best body text is #FFFFFF at 8.91:1 contrast (WCAG AA passes).
Color values
| HEX | #283CAF |
|---|---|
| RGB | rgb(40, 60, 175) |
| HSL | hsl(231, 63%, 42%) |
| HSV | hsv(231, 77%, 69%) |
| CMYK | cmyk(77.1%, 65.7%, 0%, 31.4%) |
| CIE-LAB | lab(31.29, 33.96, -63.26) |
| CIE-LCH | lch(31.29, 71.79, 298.23°) |
| OKLab | oklab(42.12% -0.0033 -0.183) |
| OKLCH | oklch(42.12% 0.183 269) |
| XYZ | xyz(10.2261, 6.7768, 41.3182) |
| Luminance | 0.0678 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire (survey)
#2138AB
ΔE00 1.30
Blue Blue
#2242C7
ΔE00 3.52
Ocean Blue
#4F42B5
ΔE00 5.15
Cobalt
#0047AB
ΔE00 5.33
Blueberry
#464196
ΔE00 5.56
Blue (survey)
#0343DF
ΔE00 6.28
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#283CAF #AF9B28
analogous
#2880AF #283CAF #5728AF
triadic
#283CAF #AF283C #3CAF28
tetradic
#283CAF #AF2880 #AF9B28 #28AF57
square
#283CAF #AF2880 #AF9B28 #28AF57
split-complementary
#283CAF #AF5728 #80AF28
monochromatic
#111A4B #1D2B7D #283CAF #4156D4 #7383DF
Accessibility & contrast
On white
8.91
#283CAF on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.36
#283CAF on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #283CAF
8.91:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##283CAF | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##283CAF | 1.00 | 8.91 | 2.36 | 8.91 |
| #FFFFFF | 8.91 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.36 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.91 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0050B3
Deuteranopia (green-blind)
#0043AD
Tritanopia (blue-blind)
#005B70
Achromatopsia (no color)
#4A4A4A
Design tokens & code
CSS
--color: #283caf; /* rgb */ color: rgb(40, 60, 175); /* oklch */ color: oklch(42.1% 0.183 269.0);
Tailwind
colors: {
custom: {
50: '#7871c8',
500: '#283caf',
950: '#000000',
},
}SCSS
$custom: #283caf; $custom-light: #7871c8; $custom-dark: #000000;
JSON
{
"hex": "#283caf",
"rgb": {
"r": 40,
"g": 60,
"b": 175
},
"hsl": {
"h": 231.111,
"s": 62.791,
"l": 42.157
},
"oklch": {
"l": 0.42117,
"c": 0.18305,
"h": 269
},
"luminance": 0.06778
}Semantic roles & 50–950 ramp
primary
#283CAF
secondary
#C6B96D
accent
#CE42E6
background
#F8F6FC
surface
#EFECF8
border
#CAC7D1
text
#0A0713
muted
#7C7A82