#1F186A#1F186A
#1F186A is a dark, vivid blue. Relative luminance 0.020; OKLCH L 28.4% C 0.135 H 277.2°. Best body text is #FFFFFF at 15.03:1 contrast (WCAG AA passes).
Color values
| HEX | #1F186A |
|---|---|
| RGB | rgb(31, 24, 106) |
| HSL | hsl(245, 63%, 25%) |
| HSV | hsv(245, 77%, 42%) |
| CMYK | cmyk(70.8%, 77.4%, 0%, 58.4%) |
| CIE-LAB | lab(15.41, 30.85, -46.39) |
| CIE-LCH | lch(15.41, 55.71, 303.62°) |
| OKLab | oklab(28.41% 0.017 -0.134) |
| OKLCH | oklch(28.41% 0.135 277.2) |
| XYZ | xyz(3.4924, 1.9849, 13.8319) |
| Luminance | 0.0198 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Midnight Blue
#191970
ΔE00 1.31
Darkblue (survey)
#030764
ΔE00 4.15
Dark Royal Blue
#02066F
ΔE00 4.40
Dark Indigo
#1F0954
ΔE00 4.80
Deep Blue
#040273
ΔE00 5.12
Dark Blue
#00035B
ΔE00 5.33
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1F186A #636A18
analogous
#183A6A #1F186A #48186A
triadic
#1F186A #6A1F18 #186A1F
tetradic
#1F186A #6A183A #636A18 #186A48
square
#1F186A #6A183A #636A18 #186A48
split-complementary
#1F186A #6A4818 #3A6A18
monochromatic
#070619 #100D38 #1F186A #2E239C #3C2FCE
Accessibility & contrast
On white
15.03
#1F186A on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
1.40
#1F186A on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #1F186A
15.03:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1F186A | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##1F186A | 1.00 | 15.03 | 1.40 | 15.03 |
| #FFFFFF | 15.03 | 1.00 | 21.00 | 1.00 |
| #000000 | 1.40 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 15.03 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#002A6C
Deuteranopia (green-blind)
#002369
Tritanopia (blue-blind)
#002F3F
Achromatopsia (no color)
#272727
Design tokens & code
CSS
--color: #1f186a; /* rgb */ color: rgb(31, 24, 106); /* oklch */ color: oklch(28.4% 0.135 277.2);
Tailwind
colors: {
custom: {
50: '#675696',
500: '#1f186a',
950: '#000000',
},
}SCSS
$custom: #1f186a; $custom-light: #675696; $custom-dark: #000000;
JSON
{
"hex": "#1f186a",
"rgb": {
"r": 31,
"g": 24,
"b": 106
},
"hsl": {
"h": 245.122,
"s": 63.077,
"l": 25.49
},
"oklch": {
"l": 0.28407,
"c": 0.13508,
"h": 277.2
},
"luminance": 0.01985
}Semantic roles & 50–950 ramp
primary
#1F186A
secondary
#98A03E
accent
#E642D8
background
#F6F5F9
surface
#EBE9F2
border
#C6C5CC
text
#07030D
muted
#7A787E