#1F4E9C#1F4E9C
#1F4E9C is a dark, vivid blue. Relative luminance 0.081; OKLCH L 43.8% C 0.137 H 260.1°. Best body text is #FFFFFF at 7.99:1 contrast (WCAG AA passes).
Color values
| HEX | #1F4E9C |
|---|---|
| RGB | rgb(31, 78, 156) |
| HSL | hsl(217, 67%, 37%) |
| HSV | hsv(217, 80%, 61%) |
| CMYK | cmyk(80.1%, 50%, 0%, 38.8%) |
| CIE-LAB | lab(34.27, 13.62, -47.02) |
| CIE-LCH | lch(34.27, 48.96, 286.15°) |
| OKLab | oklab(43.78% -0.0237 -0.1352) |
| OKLCH | oklch(43.78% 0.137 260.1) |
| XYZ | xyz(9.2880, 8.1393, 32.5276) |
| Luminance | 0.0814 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Cobalt (survey)
#1E488F
ΔE00 2.42
Dusk Blue
#26538D
ΔE00 2.80
Cobalt
#0047AB
ΔE00 3.16
Sapphire
#0F52BA
ΔE00 3.86
Light Navy
#155084
ΔE00 4.44
Denim Blue
#3B5B92
ΔE00 4.84
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1F4E9C #9C6D1F
analogous
#1F8D9C #1F4E9C #2F1F9C
triadic
#1F4E9C #9C1F4E #4E9C1F
tetradic
#1F4E9C #9C1F8D #9C6D1F #1F9C2F
square
#1F4E9C #9C1F8D #9C6D1F #1F9C2F
split-complementary
#1F4E9C #9C2F1F #8D9C1F
monochromatic
#0B1B36 #153469 #1F4E9C #2968CF #588ADE
Accessibility & contrast
On white
7.99
#1F4E9C on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.63
#1F4E9C on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #1F4E9C
7.99:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1F4E9C | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##1F4E9C | 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)
#20579F
Deuteranopia (green-blind)
#004B9A
Tritanopia (blue-blind)
#00616D
Achromatopsia (no color)
#515151
Design tokens & code
CSS
--color: #1f4e9c; /* rgb */ color: rgb(31, 78, 156); /* oklch */ color: oklch(43.8% 0.137 260.1);
Tailwind
colors: {
custom: {
50: '#6f7eba',
500: '#1f4e9c',
950: '#000000',
},
}SCSS
$custom: #1f4e9c; $custom-light: #6f7eba; $custom-dark: #000000;
JSON
{
"hex": "#1f4e9c",
"rgb": {
"r": 31,
"g": 78,
"b": 156
},
"hsl": {
"h": 217.44,
"s": 66.845,
"l": 36.667
},
"oklch": {
"l": 0.43778,
"c": 0.1373,
"h": 260.1
},
"luminance": 0.0814
}Semantic roles & 50–950 ramp
primary
#1F4E9C
secondary
#C19955
accent
#A93EEA
background
#F7F7FB
surface
#EDEEF6
border
#C8C9D0
text
#090A12
muted
#7B7C81