#304F8D#304F8D
#304F8D is a dark, moderate blue. Relative luminance 0.081; OKLCH L 43.7% C 0.109 H 262.7°. Best body text is #FFFFFF at 7.99:1 contrast (WCAG AA passes).
Color values
| HEX | #304F8D |
|---|---|
| RGB | rgb(48, 79, 141) |
| HSL | hsl(220, 49%, 37%) |
| HSV | hsv(220, 66%, 55%) |
| CMYK | cmyk(66%, 44%, 0%, 44.7%) |
| CIE-LAB | lab(34.28, 9.66, -37.87) |
| CIE-LCH | lch(34.28, 39.08, 284.31°) |
| OKLab | oklab(43.66% -0.0138 -0.108) |
| OKLCH | oklch(43.66% 0.109 262.7) |
| XYZ | xyz(8.8209, 8.1426, 26.3010) |
| Luminance | 0.0814 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Cobalt (survey)
#1E488F
ΔE00 2.66
Dusk Blue
#26538D
ΔE00 2.77
Denim Blue
#3B5B92
ΔE00 3.98
Light Navy
#155084
ΔE00 4.77
Light Navy Blue
#2E5A88
ΔE00 4.93
Cobalt
#0047AB
ΔE00 5.14
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#304F8D #8D6E30
analogous
#307E8D #304F8D #40308D
triadic
#304F8D #8D304F #4F8D30
tetradic
#304F8D #8D307E #8D6E30 #308D40
square
#304F8D #8D307E #8D6E30 #308D40
split-complementary
#304F8D #8D4030 #7E8D30
monochromatic
#111C32 #20355F #304F8D #4069BB #6B8BCD
Accessibility & contrast
On white
7.99
#304F8D on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.63
#304F8D on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #304F8D
7.99:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##304F8D | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##304F8D | 1.00 | 7.99 | 2.63 | 7.99 |
| #FFFFFF | 7.99 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.63 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 7.99 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#32558F
Deuteranopia (green-blind)
#244D8C
Tritanopia (blue-blind)
#005D67
Achromatopsia (no color)
#515151
Design tokens & code
CSS
--color: #304f8d; /* rgb */ color: rgb(48, 79, 141); /* oklch */ color: oklch(43.7% 0.109 262.7);
Tailwind
colors: {
custom: {
50: '#727faf',
500: '#304f8d',
950: '#000000',
},
}SCSS
$custom: #304f8d; $custom-light: #727faf; $custom-dark: #000000;
JSON
{
"hex": "#304f8d",
"rgb": {
"r": 48,
"g": 79,
"b": 141
},
"hsl": {
"h": 220,
"s": 49.206,
"l": 37.059
},
"oklch": {
"l": 0.43659,
"c": 0.1089,
"h": 262.7
},
"luminance": 0.08143
}Semantic roles & 50–950 ramp
primary
#304F8D
secondary
#B49A65
accent
#AB4FD9
background
#F7F7FA
surface
#EDEEF4
border
#C8C9CE
text
#090A10
muted
#7B7C7F