#283F7A#283F7A
#283F7A is a dark, moderate blue. Relative luminance 0.054; OKLCH L 38.2% C 0.104 H 265.7°. Best body text is #FFFFFF at 10.09:1 contrast (WCAG AA passes).
Color values
| HEX | #283F7A |
|---|---|
| RGB | rgb(40, 63, 122) |
| HSL | hsl(223, 51%, 32%) |
| HSV | hsv(223, 67%, 48%) |
| CMYK | cmyk(67.2%, 48.4%, 0%, 52.2%) |
| CIE-LAB | lab(27.87, 11.77, -36.37) |
| CIE-LCH | lch(27.87, 38.23, 287.94°) |
| OKLab | oklab(38.23% -0.0078 -0.104) |
| OKLCH | oklch(38.23% 0.104 265.7) |
| XYZ | xyz(6.1642, 5.4107, 19.1281) |
| Luminance | 0.0541 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Darkish Blue
#014182
ΔE00 4.29
Cobalt (survey)
#1E488F
ΔE00 4.46
Twilight Blue
#0A437A
ΔE00 4.80
Marine Blue
#01386A
ΔE00 5.08
Marine
#042E60
ΔE00 6.35
Prussian Blue
#004577
ΔE00 6.40
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#283F7A #7A6328
analogous
#28687A #283F7A #3A287A
triadic
#283F7A #7A283F #3F7A28
tetradic
#283F7A #7A2868 #7A6328 #287A3A
square
#283F7A #7A2868 #7A6328 #287A3A
split-complementary
#283F7A #7A3A28 #687A28
monochromatic
#0A0F1E #19274C #283F7A #3757A8 #5575C7
Accessibility & contrast
On white
10.09
#283F7A on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.08
#283F7A on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #283F7A
10.09:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##283F7A | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##283F7A | 1.00 | 10.09 | 2.08 | 10.09 |
| #FFFFFF | 10.09 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.08 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 10.09 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#22467C
Deuteranopia (green-blind)
#123E79
Tritanopia (blue-blind)
#004D56
Achromatopsia (no color)
#424242
Design tokens & code
CSS
--color: #283f7a; /* rgb */ color: rgb(40, 63, 122); /* oklch */ color: oklch(38.2% 0.104 265.7);
Tailwind
colors: {
custom: {
50: '#6b73a1',
500: '#283f7a',
950: '#000000',
},
}SCSS
$custom: #283f7a; $custom-light: #6b73a1; $custom-dark: #000000;
JSON
{
"hex": "#283f7a",
"rgb": {
"r": 40,
"g": 63,
"b": 122
},
"hsl": {
"h": 223.171,
"s": 50.617,
"l": 31.765
},
"oklch": {
"l": 0.38234,
"c": 0.10431,
"h": 265.7
},
"luminance": 0.05411
}Semantic roles & 50–950 ramp
primary
#283F7A
secondary
#AC9352
accent
#B34EDA
background
#F6F6F9
surface
#ECECF2
border
#C7C7CC
text
#07080F
muted
#7A7B7E