#1F4E90#1F4E90
#1F4E90 is a dark, vivid blue. Relative luminance 0.078; OKLCH L 42.9% C 0.120 H 257.6°. Best body text is #FFFFFF at 8.23:1 contrast (WCAG AA passes).
Color values
| HEX | #1F4E90 |
|---|---|
| RGB | rgb(31, 78, 144) |
| HSL | hsl(215, 65%, 34%) |
| HSV | hsv(215, 78%, 56%) |
| CMYK | cmyk(78.5%, 45.8%, 0%, 43.5%) |
| CIE-LAB | lab(33.46, 8.82, -41.05) |
| CIE-LCH | lch(33.46, 41.98, 282.13°) |
| OKLab | oklab(42.9% -0.0258 -0.1176) |
| OKLCH | oklch(42.9% 0.12 257.6) |
| XYZ | xyz(8.3217, 7.7527, 27.4380) |
| Luminance | 0.0775 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Dusk Blue
#26538D
ΔE00 1.76
Cobalt (survey)
#1E488F
ΔE00 2.17
Light Navy
#155084
ΔE00 3.06
Darkish Blue
#014182
ΔE00 4.39
Twilight Blue
#0A437A
ΔE00 4.39
Light Navy Blue
#2E5A88
ΔE00 4.43
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1F4E90 #90611F
analogous
#1F8790 #1F4E90 #291F90
triadic
#1F4E90 #901F4E #4E901F
tetradic
#1F4E90 #901F87 #90611F #1F9029
square
#1F4E90 #901F87 #90611F #1F9029
split-complementary
#1F4E90 #90291F #87901F
monochromatic
#09172B #14335E #1F4E90 #2A69C2 #5089D9
Accessibility & contrast
On white
8.23
#1F4E90 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.55
#1F4E90 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #1F4E90
8.23:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1F4E90 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##1F4E90 | 1.00 | 8.23 | 2.55 | 8.23 |
| #FFFFFF | 8.23 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.55 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.23 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#2C5493
Deuteranopia (green-blind)
#144A8F
Tritanopia (blue-blind)
#005E68
Achromatopsia (no color)
#4F4F4F
Design tokens & code
CSS
--color: #1f4e90; /* rgb */ color: rgb(31, 78, 144); /* oklch */ color: oklch(42.9% 0.120 257.6);
Tailwind
colors: {
custom: {
50: '#6c7fb1',
500: '#1f4e90',
950: '#000000',
},
}SCSS
$custom: #1f4e90; $custom-light: #6c7fb1; $custom-dark: #000000;
JSON
{
"hex": "#1f4e90",
"rgb": {
"r": 31,
"g": 78,
"b": 144
},
"hsl": {
"h": 215.044,
"s": 64.571,
"l": 34.314
},
"oklch": {
"l": 0.42896,
"c": 0.12045,
"h": 257.6
},
"luminance": 0.07754
}Semantic roles & 50–950 ramp
primary
#1F4E90
secondary
#BC8F4E
accent
#A240E8
background
#F7F7FA
surface
#EDEEF5
border
#C8C9CF
text
#080A11
muted
#7B7C80