#283F7E#283F7E
#283F7E is a dark, moderate blue. Relative luminance 0.055; OKLCH L 38.5% C 0.110 H 266.2°. Best body text is #FFFFFF at 9.99:1 contrast (WCAG AA passes).
Color values
| HEX | #283F7E |
|---|---|
| RGB | rgb(40, 63, 126) |
| HSL | hsl(224, 52%, 33%) |
| HSV | hsv(224, 68%, 49%) |
| CMYK | cmyk(68.3%, 50%, 0%, 50.6%) |
| CIE-LAB | lab(28.15, 13.31, -38.44) |
| CIE-LCH | lch(28.15, 40.68, 289.10°) |
| OKLab | oklab(38.53% -0.0072 -0.1101) |
| OKLCH | oklch(38.53% 0.11 266.2) |
| XYZ | xyz(6.4172, 5.5119, 20.4603) |
| Luminance | 0.0551 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Cobalt (survey)
#1E488F
ΔE00 4.19
Darkish Blue
#014182
ΔE00 4.29
Twilight Blue
#0A437A
ΔE00 4.96
Marine Blue
#01386A
ΔE00 5.40
Prussian Blue
#004577
ΔE00 6.58
Marine
#042E60
ΔE00 6.68
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#283F7E #7E6728
analogous
#286A7E #283F7E #3C287E
triadic
#283F7E #7E283F #3F7E28
tetradic
#283F7E #7E286A #7E6728 #287E3C
square
#283F7E #7E286A #7E6728 #287E3C
split-complementary
#283F7E #7E3C28 #6A7E28
monochromatic
#0B1121 #192850 #283F7E #3756AC #5776CA
Accessibility & contrast
On white
9.99
#283F7E on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.10
#283F7E on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #283F7E
9.99:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##283F7E | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##283F7E | 1.00 | 9.99 | 2.10 | 9.99 |
| #FFFFFF | 9.99 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.10 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 9.99 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#1E4780
Deuteranopia (green-blind)
#0A3F7D
Tritanopia (blue-blind)
#004E58
Achromatopsia (no color)
#424242
Design tokens & code
CSS
--color: #283f7e; /* rgb */ color: rgb(40, 63, 126); /* oklch */ color: oklch(38.5% 0.110 266.2);
Tailwind
colors: {
custom: {
50: '#6c73a4',
500: '#283f7e',
950: '#000000',
},
}SCSS
$custom: #283f7e; $custom-light: #6c73a4; $custom-dark: #000000;
JSON
{
"hex": "#283f7e",
"rgb": {
"r": 40,
"g": 63,
"b": 126
},
"hsl": {
"h": 223.953,
"s": 51.807,
"l": 32.549
},
"oklch": {
"l": 0.38529,
"c": 0.11034,
"h": 266.2
},
"luminance": 0.05512
}Semantic roles & 50–950 ramp
primary
#283F7E
secondary
#AF9653
accent
#B54DDB
background
#F6F6FA
surface
#ECECF4
border
#C7C7CE
text
#07080F
muted
#7A7B7F