#1B508D#1B508D
#1B508D is a dark, moderate cyan. Relative luminance 0.079; OKLCH L 43.0% C 0.115 H 254.5°. Best body text is #FFFFFF at 8.14:1 contrast (WCAG AA passes).
Color values
| HEX | #1B508D |
|---|---|
| RGB | rgb(27, 80, 141) |
| HSL | hsl(212, 68%, 33%) |
| HSV | hsv(212, 81%, 55%) |
| CMYK | cmyk(80.9%, 43.3%, 0%, 44.7%) |
| CIE-LAB | lab(33.76, 5.80, -38.75) |
| CIE-LCH | lch(33.76, 39.18, 278.51°) |
| OKLab | oklab(43.03% -0.0307 -0.1109) |
| OKLCH | oklch(43.03% 0.115 254.5) |
| XYZ | xyz(8.1266, 7.8925, 26.2892) |
| Luminance | 0.0789 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Dusk Blue
#26538D
ΔE00 1.24
Light Navy
#155084
ΔE00 1.86
Cobalt (survey)
#1E488F
ΔE00 3.36
Light Navy Blue
#2E5A88
ΔE00 3.61
Prussian Blue
#004577
ΔE00 4.51
Twilight Blue
#0A437A
ΔE00 4.52
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1B508D #8D581B
analogous
#1B898D #1B508D #1F1B8D
triadic
#1B508D #8D1B50 #508D1B
tetradic
#1B508D #8D1B89 #8D581B #1B8D1F
square
#1B508D #8D1B89 #8D581B #1B8D1F
split-complementary
#1B508D #8D1F1B #898D1B
monochromatic
#071626 #11335A #1B508D #256DC0 #478CDC
Accessibility & contrast
On white
8.14
#1B508D on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.58
#1B508D on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #1B508D
8.14:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1B508D | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##1B508D | 1.00 | 8.14 | 2.58 | 8.14 |
| #FFFFFF | 8.14 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.58 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.14 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#32558F
Deuteranopia (green-blind)
#1D4B8C
Tritanopia (blue-blind)
#005E67
Achromatopsia (no color)
#4F4F4F
Design tokens & code
CSS
--color: #1b508d; /* rgb */ color: rgb(27, 80, 141); /* oklch */ color: oklch(43.0% 0.115 254.5);
Tailwind
colors: {
custom: {
50: '#6a80af',
500: '#1b508d',
950: '#000000',
},
}SCSS
$custom: #1b508d; $custom-light: #6a80af; $custom-dark: #000000;
JSON
{
"hex": "#1b508d",
"rgb": {
"r": 27,
"g": 80,
"b": 141
},
"hsl": {
"h": 212.105,
"s": 67.857,
"l": 32.941
},
"oklch": {
"l": 0.43028,
"c": 0.11508,
"h": 254.5
},
"luminance": 0.07893
}Semantic roles & 50–950 ramp
primary
#1B508D
secondary
#BD8646
accent
#9A3DEB
background
#F6F7FA
surface
#ECEEF4
border
#C7C9CE
text
#070A10
muted
#7A7C7F