#1B5683#1B5683
#1B5683 is a dark, moderate cyan. Relative luminance 0.085; OKLCH L 43.9% C 0.095 H 245.8°. Best body text is #FFFFFF at 7.76:1 contrast (WCAG AA passes).
Color values
| HEX | #1B5683 |
|---|---|
| RGB | rgb(27, 86, 131) |
| HSL | hsl(206, 66%, 31%) |
| HSV | hsv(206, 79%, 51%) |
| CMYK | cmyk(79.4%, 34.4%, 0%, 48.6%) |
| CIE-LAB | lab(35.06, -2.09, -30.56) |
| CIE-LCH | lch(35.06, 30.63, 266.08°) |
| OKLab | oklab(43.86% -0.039 -0.0868) |
| OKLCH | oklch(43.86% 0.095 245.8) |
| XYZ | xyz(7.8749, 8.5263, 22.6990) |
| Luminance | 0.0853 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Deep Sea Blue
#015482
ΔE00 1.64
Light Navy
#155084
ΔE00 2.46
Light Navy Blue
#2E5A88
ΔE00 2.71
Dusk Blue
#26538D
ΔE00 3.74
Denim (survey)
#3B638C
ΔE00 5.31
Prussian Blue
#004577
ΔE00 5.70
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1B5683 #83481B
analogous
#1B837C #1B5683 #1B2283
triadic
#1B5683 #831B56 #56831B
tetradic
#1B5683 #7C1B83 #83481B #22831B
square
#1B5683 #7C1B83 #83481B #22831B
split-complementary
#1B5683 #831B22 #837C1B
monochromatic
#06131E #113550 #1B5683 #2577B6 #4196D8
Accessibility & contrast
On white
7.76
#1B5683 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.71
#1B5683 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #1B5683
7.76:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1B5683 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##1B5683 | 1.00 | 7.76 | 2.71 | 7.76 |
| #FFFFFF | 7.76 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.71 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 7.76 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#415885
Deuteranopia (green-blind)
#324E82
Tritanopia (blue-blind)
#006166
Achromatopsia (no color)
#525252
Design tokens & code
CSS
--color: #1b5683; /* rgb */ color: rgb(27, 86, 131); /* oklch */ color: oklch(43.9% 0.095 245.8);
Tailwind
colors: {
custom: {
50: '#6885a7',
500: '#1b5683',
950: '#000000',
},
}SCSS
$custom: #1b5683; $custom-light: #6885a7; $custom-dark: #000000;
JSON
{
"hex": "#1b5683",
"rgb": {
"r": 27,
"g": 86,
"b": 131
},
"hsl": {
"h": 205.962,
"s": 65.823,
"l": 30.98
},
"oklch": {
"l": 0.43855,
"c": 0.09518,
"h": 245.8
},
"luminance": 0.08527
}Semantic roles & 50–950 ramp
primary
#1B5683
secondary
#B67543
accent
#883FE9
background
#F6F8FA
surface
#EBEFF4
border
#C6CACE
text
#070B0F
muted
#7A7C7F