#1F498B#1F498B
#1F498B is a dark, moderate blue. Relative luminance 0.069; OKLCH L 41.4% C 0.120 H 259.2°. Best body text is #FFFFFF at 8.81:1 contrast (WCAG AA passes).
Color values
| HEX | #1F498B |
|---|---|
| RGB | rgb(31, 73, 139) |
| HSL | hsl(217, 64%, 33%) |
| HSV | hsv(217, 78%, 55%) |
| CMYK | cmyk(77.7%, 47.5%, 0%, 45.5%) |
| CIE-LAB | lab(31.62, 10.19, -40.94) |
| CIE-LCH | lch(31.62, 42.19, 283.98°) |
| OKLab | oklab(41.37% -0.0223 -0.1174) |
| OKLCH | oklch(41.37% 0.12 259.2) |
| XYZ | xyz(7.6061, 6.9196, 25.3558) |
| Luminance | 0.0692 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Cobalt (survey)
#1E488F
ΔE00 0.74
Darkish Blue
#014182
ΔE00 3.04
Twilight Blue
#0A437A
ΔE00 3.37
Dusk Blue
#26538D
ΔE00 3.39
Light Navy
#155084
ΔE00 4.10
Cobalt
#0047AB
ΔE00 4.33
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1F498B #8B611F
analogous
#1F7F8B #1F498B #2B1F8B
triadic
#1F498B #8B1F49 #498B1F
tetradic
#1F498B #8B1F7F #8B611F #1F8B2B
square
#1F498B #8B1F7F #8B611F #1F8B2B
split-complementary
#1F498B #8B2B1F #7F8B1F
monochromatic
#091427 #142F59 #1F498B #2A63BD #4D83D7
Accessibility & contrast
On white
8.81
#1F498B on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.38
#1F498B on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #1F498B
8.81:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1F498B | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##1F498B | 1.00 | 8.81 | 2.38 | 8.81 |
| #FFFFFF | 8.81 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.38 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.81 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#26508D
Deuteranopia (green-blind)
#0C468A
Tritanopia (blue-blind)
#005963
Achromatopsia (no color)
#4A4A4A
Design tokens & code
CSS
--color: #1f498b; /* rgb */ color: rgb(31, 73, 139); /* oklch */ color: oklch(41.4% 0.120 259.2);
Tailwind
colors: {
custom: {
50: '#6b7bad',
500: '#1f498b',
950: '#000000',
},
}SCSS
$custom: #1f498b; $custom-light: #6b7bad; $custom-dark: #000000;
JSON
{
"hex": "#1f498b",
"rgb": {
"r": 31,
"g": 73,
"b": 139
},
"hsl": {
"h": 216.667,
"s": 63.529,
"l": 33.333
},
"oklch": {
"l": 0.4137,
"c": 0.11953,
"h": 259.2
},
"luminance": 0.0692
}Semantic roles & 50–950 ramp
primary
#1F498B
secondary
#BA8F4C
accent
#A641E7
background
#F6F7FA
surface
#ECEDF4
border
#C7C8CE
text
#080910
muted
#7A7B7F