#1B4889#1B4889
#1B4889 is a dark, moderate blue. Relative luminance 0.067; OKLCH L 40.8% C 0.119 H 258.1°. Best body text is #FFFFFF at 8.99:1 contrast (WCAG AA passes).
Color values
| HEX | #1B4889 |
|---|---|
| RGB | rgb(27, 72, 137) |
| HSL | hsl(215, 67%, 32%) |
| HSV | hsv(215, 80%, 54%) |
| CMYK | cmyk(80.3%, 47.4%, 0%, 46.3%) |
| CIE-LAB | lab(31.05, 9.57, -40.63) |
| CIE-LCH | lch(31.05, 41.75, 283.25°) |
| OKLab | oklab(40.85% -0.0245 -0.1166) |
| OKLCH | oklch(40.85% 0.119 258.1) |
| XYZ | xyz(7.2831, 6.6730, 24.5662) |
| Luminance | 0.0667 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Cobalt (survey)
#1E488F
ΔE00 1.08
Darkish Blue
#014182
ΔE00 2.53
Twilight Blue
#0A437A
ΔE00 2.84
Dusk Blue
#26538D
ΔE00 3.62
Prussian Blue
#004577
ΔE00 3.91
Light Navy
#155084
ΔE00 3.96
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1B4889 #895C1B
analogous
#1B7F89 #1B4889 #251B89
triadic
#1B4889 #891B48 #48891B
tetradic
#1B4889 #891B7F #895C1B #1B8925
square
#1B4889 #891B7F #895C1B #1B8925
split-complementary
#1B4889 #89251B #7F891B
monochromatic
#071223 #112D56 #1B4889 #2563BC #4482DA
Accessibility & contrast
On white
8.99
#1B4889 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.33
#1B4889 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #1B4889
8.99:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1B4889 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##1B4889 | 1.00 | 8.99 | 2.33 | 8.99 |
| #FFFFFF | 8.99 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.33 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.99 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#254E8B
Deuteranopia (green-blind)
#094488
Tritanopia (blue-blind)
#005762
Achromatopsia (no color)
#494949
Design tokens & code
CSS
--color: #1b4889; /* rgb */ color: rgb(27, 72, 137); /* oklch */ color: oklch(40.8% 0.119 258.1);
Tailwind
colors: {
custom: {
50: '#697aac',
500: '#1b4889',
950: '#000000',
},
}SCSS
$custom: #1b4889; $custom-light: #697aac; $custom-dark: #000000;
JSON
{
"hex": "#1b4889",
"rgb": {
"r": 27,
"g": 72,
"b": 137
},
"hsl": {
"h": 215.455,
"s": 67.073,
"l": 32.157
},
"oklch": {
"l": 0.40847,
"c": 0.11917,
"h": 258.1
},
"luminance": 0.06674
}Semantic roles & 50–950 ramp
primary
#1B4889
secondary
#BC8B44
accent
#A43EEA
background
#F6F7FA
surface
#ECEDF4
border
#C7C8CE
text
#070910
muted
#7A7B7F