#1F519E#1F519E
#1F519E is a dark, vivid blue. Relative luminance 0.086; OKLCH L 44.6% C 0.136 H 259.1°. Best body text is #FFFFFF at 7.70:1 contrast (WCAG AA passes).
Color values
| HEX | #1F519E |
|---|---|
| RGB | rgb(31, 81, 158) |
| HSL | hsl(216, 67%, 37%) |
| HSV | hsv(216, 80%, 62%) |
| CMYK | cmyk(80.4%, 48.7%, 0%, 38%) |
| CIE-LAB | lab(35.29, 12.40, -46.59) |
| CIE-LCH | lch(35.29, 48.21, 284.90°) |
| OKLab | oklab(44.6% -0.0258 -0.1339) |
| OKLCH | oklch(44.6% 0.136 259.1) |
| XYZ | xyz(9.6768, 8.6436, 33.4995) |
| Luminance | 0.0864 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Dusk Blue
#26538D
ΔE00 2.33
Cobalt (survey)
#1E488F
ΔE00 3.35
Sapphire
#0F52BA
ΔE00 3.50
Cobalt
#0047AB
ΔE00 3.86
Light Navy
#155084
ΔE00 4.20
Denim Blue
#3B5B92
ΔE00 4.20
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1F519E #9E6C1F
analogous
#1F919E #1F519E #2D1F9E
triadic
#1F519E #9E1F51 #519E1F
tetradic
#1F519E #9E1F91 #9E6C1F #1F9E2D
square
#1F519E #9E1F91 #9E6C1F #1F9E2D
split-complementary
#1F519E #9E2D1F #919E1F
monochromatic
#0B1D38 #15376B #1F519E #296BD1 #598EDE
Accessibility & contrast
On white
7.70
#1F519E on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.73
#1F519E on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #1F519E
7.70:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1F519E | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##1F519E | 1.00 | 7.70 | 2.73 | 7.70 |
| #FFFFFF | 7.70 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.73 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 7.70 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#2559A1
Deuteranopia (green-blind)
#004E9C
Tritanopia (blue-blind)
#006370
Achromatopsia (no color)
#535353
Design tokens & code
CSS
--color: #1f519e; /* rgb */ color: rgb(31, 81, 158); /* oklch */ color: oklch(44.6% 0.136 259.1);
Tailwind
colors: {
custom: {
50: '#6f81bb',
500: '#1f519e',
950: '#000000',
},
}SCSS
$custom: #1f519e; $custom-light: #6f81bb; $custom-dark: #000000;
JSON
{
"hex": "#1f519e",
"rgb": {
"r": 31,
"g": 81,
"b": 158
},
"hsl": {
"h": 216.378,
"s": 67.196,
"l": 37.059
},
"oklch": {
"l": 0.44603,
"c": 0.13637,
"h": 259.1
},
"luminance": 0.08645
}Semantic roles & 50–950 ramp
primary
#1F519E
secondary
#C29856
accent
#A63EEA
background
#F7F7FB
surface
#EDEEF6
border
#C8C9D0
text
#090A12
muted
#7B7C81