#1B4899#1B4899
#1B4899 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 42.1% C 0.142 H 261.1°. Best body text is #FFFFFF at 8.63:1 contrast (WCAG AA passes).
Color values
| HEX | #1B4899 |
|---|---|
| RGB | rgb(27, 72, 153) |
| HSL | hsl(219, 70%, 35%) |
| HSV | hsv(219, 82%, 60%) |
| CMYK | cmyk(82.4%, 52.9%, 0%, 40%) |
| CIE-LAB | lab(32.18, 16.06, -48.59) |
| CIE-LCH | lch(32.18, 51.17, 288.29°) |
| OKLab | oklab(42.08% -0.022 -0.14) |
| OKLCH | oklch(42.08% 0.142 261.1) |
| XYZ | xyz(8.5170, 7.1666, 31.0652) |
| Luminance | 0.0717 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Cobalt (survey)
#1E488F
ΔE00 1.39
Cobalt
#0047AB
ΔE00 2.43
Darkish Blue
#014182
ΔE00 4.08
Dusk Blue
#26538D
ΔE00 4.31
Twilight Blue
#0A437A
ΔE00 4.86
Sapphire
#0F52BA
ΔE00 5.03
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1B4899 #996C1B
analogous
#1B8799 #1B4899 #2D1B99
triadic
#1B4899 #991B48 #48991B
tetradic
#1B4899 #991B87 #996C1B #1B992D
square
#1B4899 #991B87 #996C1B #1B992D
split-complementary
#1B4899 #992D1B #87991B
monochromatic
#091731 #123065 #1B4899 #2460CD #4F82E0
Accessibility & contrast
On white
8.63
#1B4899 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.43
#1B4899 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #1B4899
8.63:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1B4899 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##1B4899 | 1.00 | 8.63 | 2.43 | 8.63 |
| #FFFFFF | 8.63 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.43 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.63 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0F529C
Deuteranopia (green-blind)
#004697
Tritanopia (blue-blind)
#005C69
Achromatopsia (no color)
#4C4C4C
Design tokens & code
CSS
--color: #1b4899; /* rgb */ color: rgb(27, 72, 153); /* oklch */ color: oklch(42.1% 0.142 261.1);
Tailwind
colors: {
custom: {
50: '#6d7ab8',
500: '#1b4899',
950: '#000000',
},
}SCSS
$custom: #1b4899; $custom-light: #6d7ab8; $custom-dark: #000000;
JSON
{
"hex": "#1b4899",
"rgb": {
"r": 27,
"g": 72,
"b": 153
},
"hsl": {
"h": 218.571,
"s": 70,
"l": 35.294
},
"oklch": {
"l": 0.42077,
"c": 0.14176,
"h": 261.1
},
"luminance": 0.07168
}Semantic roles & 50–950 ramp
primary
#1B4899
secondary
#C2994E
accent
#AD3BED
background
#F7F7FB
surface
#EDEDF6
border
#C8C8D0
text
#080911
muted
#7B7B80