#304EAB#304EAB
#304EAB is a mid, vivid blue. Relative luminance 0.090; OKLCH L 45.6% C 0.153 H 266.7°. Best body text is #FFFFFF at 7.49:1 contrast (WCAG AA passes).
Color values
| HEX | #304EAB |
|---|---|
| RGB | rgb(48, 78, 171) |
| HSL | hsl(225, 56%, 43%) |
| HSV | hsv(225, 72%, 67%) |
| CMYK | cmyk(71.9%, 54.4%, 0%, 32.9%) |
| CIE-LAB | lab(36.02, 21.59, -53.16) |
| CIE-LCH | lch(36.02, 57.37, 292.10°) |
| OKLab | oklab(45.63% -0.0088 -0.153) |
| OKLCH | oklch(45.63% 0.153 266.7) |
| XYZ | xyz(11.2914, 9.0163, 39.6654) |
| Luminance | 0.0902 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire
#0F52BA
ΔE00 3.31
Cobalt
#0047AB
ΔE00 3.32
Cobalt (survey)
#1E488F
ΔE00 4.83
Blue Blue
#2242C7
ΔE00 5.52
Dusk Blue
#26538D
ΔE00 5.66
Denim Blue
#3B5B92
ΔE00 5.76
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#304EAB #AB8D30
analogous
#308BAB #304EAB #5030AB
triadic
#304EAB #AB304E #4EAB30
tetradic
#304EAB #AB308B #AB8D30 #30AB50
square
#304EAB #AB308B #AB8D30 #30AB50
split-complementary
#304EAB #AB5030 #8BAB30
monochromatic
#15224B #23387B #304EAB #4C6BCD #7B92DA
Accessibility & contrast
On white
7.49
#304EAB on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.80
#304EAB on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #304EAB
7.49:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##304EAB | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##304EAB | 1.00 | 7.49 | 2.80 | 7.49 |
| #FFFFFF | 7.49 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.80 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 7.49 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#045BAE
Deuteranopia (green-blind)
#004FA9
Tritanopia (blue-blind)
#006475
Achromatopsia (no color)
#555555
Design tokens & code
CSS
--color: #304eab; /* rgb */ color: rgb(48, 78, 171); /* oklch */ color: oklch(45.6% 0.153 266.7);
Tailwind
colors: {
custom: {
50: '#797fc5',
500: '#304eab',
950: '#000000',
},
}SCSS
$custom: #304eab; $custom-light: #797fc5; $custom-dark: #000000;
JSON
{
"hex": "#304eab",
"rgb": {
"r": 48,
"g": 78,
"b": 171
},
"hsl": {
"h": 225.366,
"s": 56.164,
"l": 42.941
},
"oklch": {
"l": 0.45632,
"c": 0.15325,
"h": 266.7
},
"luminance": 0.09017
}Semantic roles & 50–950 ramp
primary
#304EAB
secondary
#C3AF74
accent
#BB48DF
background
#F7F7FC
surface
#EEEEF8
border
#C9C9D1
text
#0A0A13
muted
#7C7C82