#1F387C#1F387C
#1F387C is a dark, moderate blue. Relative luminance 0.046; OKLCH L 36.3% C 0.120 H 265.5°. Best body text is #FFFFFF at 10.97:1 contrast (WCAG AA passes).
Color values
| HEX | #1F387C |
|---|---|
| RGB | rgb(31, 56, 124) |
| HSL | hsl(224, 60%, 30%) |
| HSV | hsv(224, 75%, 49%) |
| CMYK | cmyk(75%, 54.8%, 0%, 51.4%) |
| CIE-LAB | lab(25.49, 15.93, -41.50) |
| CIE-LCH | lch(25.49, 44.45, 291.00°) |
| OKLab | oklab(36.34% -0.0093 -0.1194) |
| OKLCH | oklch(36.34% 0.12 265.5) |
| XYZ | xyz(5.6161, 4.5743, 19.6518) |
| Luminance | 0.0457 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Darkish Blue
#014182
ΔE00 4.95
Marine Blue
#01386A
ΔE00 4.96
Marine
#042E60
ΔE00 5.29
Cobalt (survey)
#1E488F
ΔE00 5.75
Twilight Blue
#0A437A
ΔE00 5.83
Sapphire (survey)
#2138AB
ΔE00 7.35
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1F387C #7C631F
analogous
#1F667C #1F387C #341F7C
triadic
#1F387C #7C1F38 #387C1F
tetradic
#1F387C #7C1F66 #7C631F #1F7C34
square
#1F387C #7C1F66 #7C631F #1F7C34
split-complementary
#1F387C #7C341F #667C1F
monochromatic
#070C1A #13224B #1F387C #2B4EAD #456AD0
Accessibility & contrast
On white
10.97
#1F387C on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
1.92
#1F387C on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #1F387C
10.97:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1F387C | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##1F387C | 1.00 | 10.97 | 1.92 | 10.97 |
| #FFFFFF | 10.97 | 1.00 | 21.00 | 1.00 |
| #000000 | 1.92 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 10.97 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#08417E
Deuteranopia (green-blind)
#00387B
Tritanopia (blue-blind)
#004854
Achromatopsia (no color)
#3C3C3C
Design tokens & code
CSS
--color: #1f387c; /* rgb */ color: rgb(31, 56, 124); /* oklch */ color: oklch(36.3% 0.120 265.5);
Tailwind
colors: {
custom: {
50: '#686ea2',
500: '#1f387c',
950: '#000000',
},
}SCSS
$custom: #1f387c; $custom-light: #686ea2; $custom-dark: #000000;
JSON
{
"hex": "#1f387c",
"rgb": {
"r": 31,
"g": 56,
"b": 124
},
"hsl": {
"h": 223.871,
"s": 60,
"l": 30.392
},
"oklch": {
"l": 0.36337,
"c": 0.11977,
"h": 265.5
},
"luminance": 0.04575
}Semantic roles & 50–950 ramp
primary
#1F387C
secondary
#AF9348
accent
#B945E3
background
#F6F6FA
surface
#EBEBF4
border
#C6C6CE
text
#07070F
muted
#7A7A7F