#1F4E91#1F4E91
#1F4E91 is a dark, vivid blue. Relative luminance 0.078; OKLCH L 43.0% C 0.122 H 257.9°. Best body text is #FFFFFF at 8.21:1 contrast (WCAG AA passes).
Color values
| HEX | #1F4E91 |
|---|---|
| RGB | rgb(31, 78, 145) |
| HSL | hsl(215, 65%, 35%) |
| HSV | hsv(215, 79%, 57%) |
| CMYK | cmyk(78.6%, 46.2%, 0%, 43.1%) |
| CIE-LAB | lab(33.53, 9.22, -41.55) |
| CIE-LCH | lch(33.53, 42.56, 282.51°) |
| OKLab | oklab(42.97% -0.0256 -0.1191) |
| OKLCH | oklch(42.97% 0.122 257.9) |
| XYZ | xyz(8.3984, 7.7834, 27.8423) |
| Luminance | 0.0778 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Dusk Blue
#26538D
ΔE00 1.82
Cobalt (survey)
#1E488F
ΔE00 2.14
Light Navy
#155084
ΔE00 3.17
Cobalt
#0047AB
ΔE00 4.33
Darkish Blue
#014182
ΔE00 4.44
Light Navy Blue
#2E5A88
ΔE00 4.47
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1F4E91 #91621F
analogous
#1F8791 #1F4E91 #291F91
triadic
#1F4E91 #911F4E #4E911F
tetradic
#1F4E91 #911F87 #91621F #1F9129
square
#1F4E91 #911F87 #91621F #1F9129
split-complementary
#1F4E91 #91291F #87911F
monochromatic
#09182C #14335F #1F4E91 #2A69C3 #5189DA
Accessibility & contrast
On white
8.21
#1F4E91 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.56
#1F4E91 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #1F4E91
8.21:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1F4E91 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##1F4E91 | 1.00 | 8.21 | 2.56 | 8.21 |
| #FFFFFF | 8.21 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.56 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.21 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#2B5494
Deuteranopia (green-blind)
#124A90
Tritanopia (blue-blind)
#005E68
Achromatopsia (no color)
#4F4F4F
Design tokens & code
CSS
--color: #1f4e91; /* rgb */ color: rgb(31, 78, 145); /* oklch */ color: oklch(43.0% 0.122 257.9);
Tailwind
colors: {
custom: {
50: '#6c7fb2',
500: '#1f4e91',
950: '#000000',
},
}SCSS
$custom: #1f4e91; $custom-light: #6c7fb2; $custom-dark: #000000;
JSON
{
"hex": "#1f4e91",
"rgb": {
"r": 31,
"g": 78,
"b": 145
},
"hsl": {
"h": 215.263,
"s": 64.773,
"l": 34.51
},
"oklch": {
"l": 0.42967,
"c": 0.12186,
"h": 257.9
},
"luminance": 0.07784
}Semantic roles & 50–950 ramp
primary
#1F4E91
secondary
#BD904F
accent
#A340E8
background
#F7F7FB
surface
#EDEEF6
border
#C8C9D0
text
#080A11
muted
#7B7C80