#1F4887#1F4887
#1F4887 is a dark, moderate blue. Relative luminance 0.067; OKLCH L 40.8% C 0.115 H 258.9°. Best body text is #FFFFFF at 8.99:1 contrast (WCAG AA passes).
Color values
| HEX | #1F4887 |
|---|---|
| RGB | rgb(31, 72, 135) |
| HSL | hsl(216, 63%, 33%) |
| HSV | hsv(216, 77%, 53%) |
| CMYK | cmyk(77%, 46.7%, 0%, 47.1%) |
| CIE-LAB | lab(31.05, 9.27, -39.39) |
| CIE-LCH | lch(31.05, 40.46, 283.24°) |
| OKLab | oklab(40.85% -0.0221 -0.1129) |
| OKLCH | oklch(40.85% 0.115 258.9) |
| XYZ | xyz(7.2540, 6.6745, 23.8230) |
| Luminance | 0.0668 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Cobalt (survey)
#1E488F
ΔE00 1.14
Darkish Blue
#014182
ΔE00 2.66
Twilight Blue
#0A437A
ΔE00 2.92
Dusk Blue
#26538D
ΔE00 3.70
Prussian Blue
#004577
ΔE00 4.07
Light Navy
#155084
ΔE00 4.15
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1F4887 #875E1F
analogous
#1F7C87 #1F4887 #2A1F87
triadic
#1F4887 #871F48 #48871F
tetradic
#1F4887 #871F7C #875E1F #1F872A
square
#1F4887 #871F7C #875E1F #1F872A
split-complementary
#1F4887 #872A1F #7C871F
monochromatic
#081323 #142D55 #1F4887 #2A63B9 #4B82D6
Accessibility & contrast
On white
8.99
#1F4887 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.34
#1F4887 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #1F4887
8.99:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1F4887 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##1F4887 | 1.00 | 8.99 | 2.34 | 8.99 |
| #FFFFFF | 8.99 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.34 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.99 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#274E89
Deuteranopia (green-blind)
#114586
Tritanopia (blue-blind)
#005761
Achromatopsia (no color)
#494949
Design tokens & code
CSS
--color: #1f4887; /* rgb */ color: rgb(31, 72, 135); /* oklch */ color: oklch(40.8% 0.115 258.9);
Tailwind
colors: {
custom: {
50: '#6a7aaa',
500: '#1f4887',
950: '#000000',
},
}SCSS
$custom: #1f4887; $custom-light: #6a7aaa; $custom-dark: #000000;
JSON
{
"hex": "#1f4887",
"rgb": {
"r": 31,
"g": 72,
"b": 135
},
"hsl": {
"h": 216.346,
"s": 62.651,
"l": 32.549
},
"oklch": {
"l": 0.40846,
"c": 0.11504,
"h": 258.9
},
"luminance": 0.06675
}Semantic roles & 50–950 ramp
primary
#1F4887
secondary
#B88D4A
accent
#A542E6
background
#F6F7FA
surface
#ECEDF4
border
#C7C8CE
text
#070910
muted
#7A7B7F