#1F4C8C#1F4C8C
#1F4C8C is a dark, moderate blue. Relative luminance 0.074; OKLCH L 42.1% C 0.117 H 257.8°. Best body text is #FFFFFF at 8.50:1 contrast (WCAG AA passes).
Color values
| HEX | #1F4C8C |
|---|---|
| RGB | rgb(31, 76, 140) |
| HSL | hsl(215, 64%, 34%) |
| HSV | hsv(215, 78%, 55%) |
| CMYK | cmyk(77.9%, 45.7%, 0%, 45.1%) |
| CIE-LAB | lab(32.60, 8.57, -39.99) |
| CIE-LCH | lch(32.60, 40.90, 282.09°) |
| OKLab | oklab(42.14% -0.0248 -0.1146) |
| OKLCH | oklch(42.14% 0.117 257.8) |
| XYZ | xyz(7.8814, 7.3527, 25.8097) |
| Luminance | 0.0735 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Cobalt (survey)
#1E488F
ΔE00 1.65
Dusk Blue
#26538D
ΔE00 2.33
Light Navy
#155084
ΔE00 3.20
Darkish Blue
#014182
ΔE00 3.71
Twilight Blue
#0A437A
ΔE00 3.73
Prussian Blue
#004577
ΔE00 4.38
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1F4C8C #8C5F1F
analogous
#1F828C #1F4C8C #281F8C
triadic
#1F4C8C #8C1F4C #4C8C1F
tetradic
#1F4C8C #8C1F82 #8C5F1F #1F8C28
square
#1F4C8C #8C1F82 #8C5F1F #1F8C28
split-complementary
#1F4C8C #8C281F #828C1F
monochromatic
#091628 #14315A #1F4C8C #2A67BE #4E87D8
Accessibility & contrast
On white
8.50
#1F4C8C on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.47
#1F4C8C on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #1F4C8C
8.50:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1F4C8C | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##1F4C8C | 1.00 | 8.50 | 2.47 | 8.50 |
| #FFFFFF | 8.50 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.47 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.50 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#2B528E
Deuteranopia (green-blind)
#15488B
Tritanopia (blue-blind)
#005B65
Achromatopsia (no color)
#4D4D4D
Design tokens & code
CSS
--color: #1f4c8c; /* rgb */ color: rgb(31, 76, 140); /* oklch */ color: oklch(42.1% 0.117 257.8);
Tailwind
colors: {
custom: {
50: '#6b7dae',
500: '#1f4c8c',
950: '#000000',
},
}SCSS
$custom: #1f4c8c; $custom-light: #6b7dae; $custom-dark: #000000;
JSON
{
"hex": "#1f4c8c",
"rgb": {
"r": 31,
"g": 76,
"b": 140
},
"hsl": {
"h": 215.229,
"s": 63.743,
"l": 33.529
},
"oklch": {
"l": 0.42143,
"c": 0.11723,
"h": 257.8
},
"luminance": 0.07354
}Semantic roles & 50–950 ramp
primary
#1F4C8C
secondary
#BB8D4C
accent
#A241E7
background
#F6F7FA
surface
#ECEEF4
border
#C7C9CE
text
#080910
muted
#7A7B7F