#175B78#175B78
#175B78 is a dark, moderate cyan. Relative luminance 0.090; OKLCH L 44.4% C 0.080 H 231.5°. Best body text is #FFFFFF at 7.49:1 contrast (WCAG AA passes).
Color values
| HEX | #175B78 |
|---|---|
| RGB | rgb(23, 91, 120) |
| HSL | hsl(198, 68%, 28%) |
| HSV | hsv(198, 81%, 47%) |
| CMYK | cmyk(80.8%, 24.2%, 0%, 52.9%) |
| CIE-LAB | lab(36.02, -9.93, -22.29) |
| CIE-LCH | lch(36.02, 24.40, 245.98°) |
| OKLab | oklab(44.41% -0.05 -0.0627) |
| OKLCH | oklch(44.41% 0.08 231.5) |
| XYZ | xyz(7.4832, 9.0195, 19.1122) |
| Luminance | 0.0902 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Ugly Blue
#31668A
ΔE00 5.63
Deep Sea Blue
#015482
ΔE00 5.86
Peacock Blue
#016795
ΔE00 6.02
Dark Slate Blue
#214761
ΔE00 7.48
Light Navy Blue
#2E5A88
ΔE00 7.77
Denim (survey)
#3B638C
ΔE00 8.07
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#175B78 #783417
analogous
#177864 #175B78 #172A78
triadic
#175B78 #78175B #5B7817
tetradic
#175B78 #641778 #783417 #2A7817
square
#175B78 #641778 #783417 #2A7817
split-complementary
#175B78 #78172A #786417
monochromatic
#05131A #0D3445 #175B78 #2182AB #32A6D8
Accessibility & contrast
On white
7.49
#175B78 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.80
#175B78 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #175B78
7.49:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##175B78 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##175B78 | 1.00 | 7.49 | 2.80 | 7.49 |
| #FFFFFF | 7.49 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.80 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 7.49 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#4C5A79
Deuteranopia (green-blind)
#3F5178
Tritanopia (blue-blind)
#006365
Achromatopsia (no color)
#555555
Design tokens & code
CSS
--color: #175b78; /* rgb */ color: rgb(23, 91, 120); /* oklch */ color: oklch(44.4% 0.080 231.5);
Tailwind
colors: {
custom: {
50: '#65899f',
500: '#175b78',
950: '#000000',
},
}SCSS
$custom: #175b78; $custom-light: #65899f; $custom-dark: #000000;
JSON
{
"hex": "#175b78",
"rgb": {
"r": 23,
"g": 91,
"b": 120
},
"hsl": {
"h": 197.938,
"s": 67.832,
"l": 28.039
},
"oklch": {
"l": 0.44411,
"c": 0.08022,
"h": 231.5
},
"luminance": 0.0902
}Semantic roles & 50–950 ramp
primary
#175B78
secondary
#AD5F3E
accent
#713DEB
background
#F6F8F9
surface
#EBF0F2
border
#C6CBCC
text
#060B0E
muted
#7A7C7E