#1B489B#1B489B
#1B489B is a dark, vivid blue. Relative luminance 0.072; OKLCH L 42.2% C 0.145 H 261.3°. Best body text is #FFFFFF at 8.58:1 contrast (WCAG AA passes).
Color values
| HEX | #1B489B |
|---|---|
| RGB | rgb(27, 72, 155) |
| HSL | hsl(219, 70%, 36%) |
| HSV | hsv(219, 83%, 61%) |
| CMYK | cmyk(82.6%, 53.5%, 0%, 39.2%) |
| CIE-LAB | lab(32.33, 16.87, -49.56) |
| CIE-LCH | lch(32.33, 52.35, 288.79°) |
| OKLab | oklab(42.24% -0.0218 -0.1429) |
| OKLCH | oklch(42.24% 0.145 261.3) |
| XYZ | xyz(8.6836, 7.2332, 31.9425) |
| Luminance | 0.0723 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Cobalt (survey)
#1E488F
ΔE00 1.68
Cobalt
#0047AB
ΔE00 2.17
Darkish Blue
#014182
ΔE00 4.33
Dusk Blue
#26538D
ΔE00 4.46
Sapphire
#0F52BA
ΔE00 4.84
Twilight Blue
#0A437A
ΔE00 5.12
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1B489B #9B6E1B
analogous
#1B889B #1B489B #2E1B9B
triadic
#1B489B #9B1B48 #489B1B
tetradic
#1B489B #9B1B88 #9B6E1B #1B9B2E
square
#1B489B #9B1B88 #9B6E1B #1B9B2E
split-complementary
#1B489B #9B2E1B #889B1B
monochromatic
#091833 #123067 #1B489B #2460CF #5083E0
Accessibility & contrast
On white
8.58
#1B489B on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.45
#1B489B on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #1B489B
8.58:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1B489B | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##1B489B | 1.00 | 8.58 | 2.45 | 8.58 |
| #FFFFFF | 8.58 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.45 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.58 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#09529E
Deuteranopia (green-blind)
#004799
Tritanopia (blue-blind)
#005C6A
Achromatopsia (no color)
#4C4C4C
Design tokens & code
CSS
--color: #1b489b; /* rgb */ color: rgb(27, 72, 155); /* oklch */ color: oklch(42.2% 0.145 261.3);
Tailwind
colors: {
custom: {
50: '#6e7ab9',
500: '#1b489b',
950: '#000000',
},
}SCSS
$custom: #1b489b; $custom-light: #6e7ab9; $custom-dark: #000000;
JSON
{
"hex": "#1b489b",
"rgb": {
"r": 27,
"g": 72,
"b": 155
},
"hsl": {
"h": 218.906,
"s": 70.33,
"l": 35.686
},
"oklch": {
"l": 0.42238,
"c": 0.14454,
"h": 261.3
},
"luminance": 0.07234
}Semantic roles & 50–950 ramp
primary
#1B489B
secondary
#C39A4F
accent
#AE3BED
background
#F7F7FB
surface
#EDEDF6
border
#C8C8D0
text
#080911
muted
#7B7B80