#2178A0#2178A0
#2178A0 is a mid, moderate cyan. Relative luminance 0.163; OKLCH L 54.1% C 0.100 H 233.5°. Best body text is #FFFFFF at 4.93:1 contrast (WCAG AA passes).
Color values
| HEX | #2178A0 |
|---|---|
| RGB | rgb(33, 120, 160) |
| HSL | hsl(199, 66%, 38%) |
| HSV | hsv(199, 79%, 63%) |
| CMYK | cmyk(79.4%, 25%, 0%, 37.3%) |
| CIE-LAB | lab(47.36, -11.02, -28.64) |
| CIE-LCH | lch(47.36, 30.69, 248.96°) |
| OKLab | oklab(54.12% -0.0597 -0.0807) |
| OKLCH | oklch(54.12% 0.1 233.5) |
| XYZ | xyz(13.6863, 16.2927, 35.6744) |
| Luminance | 0.1629 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Cerulean
#007BA7
ΔE00 1.55
Ocean Blue (survey)
#03719C
ΔE00 2.81
Nice Blue
#107AB0
ΔE00 3.35
Sea Blue
#047495
ΔE00 3.63
Dirty Blue
#3F829D
ΔE00 5.52
Stormy Blue
#507B9C
ΔE00 5.53
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#2178A0 #A04921
analogous
#21A089 #2178A0 #2138A0
triadic
#2178A0 #A02178 #78A021
tetradic
#2178A0 #8921A0 #A04921 #38A021
square
#2178A0 #8921A0 #A04921 #38A021
split-complementary
#2178A0 #A02138 #A08921
monochromatic
#0C2C3B #17526D #2178A0 #2B9ED3 #5EB5DE
Accessibility & contrast
On white
4.93
#2178A0 on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
4.26
#2178A0 on #000000
AA ✗AA large ✓AAA ✗
Best text color
#FFFFFF on #2178A0
4.93:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##2178A0 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##2178A0 | 1.00 | 4.93 | 4.26 | 4.93 |
| #FFFFFF | 4.93 | 1.00 | 21.00 | 1.00 |
| #000000 | 4.26 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 4.93 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#6477A2
Deuteranopia (green-blind)
#536B9F
Tritanopia (blue-blind)
#008386
Achromatopsia (no color)
#707070
Design tokens & code
CSS
--color: #2178a0; /* rgb */ color: rgb(33, 120, 160); /* oklch */ color: oklch(54.1% 0.100 233.5);
Tailwind
colors: {
custom: {
50: '#719fbc',
500: '#2178a0',
950: '#000000',
},
}SCSS
$custom: #2178a0; $custom-light: #719fbc; $custom-dark: #000000;
JSON
{
"hex": "#2178a0",
"rgb": {
"r": 33,
"g": 120,
"b": 160
},
"hsl": {
"h": 198.898,
"s": 65.803,
"l": 37.843
},
"oklch": {
"l": 0.54122,
"c": 0.10045,
"h": 233.5
},
"luminance": 0.16294
}Semantic roles & 50–950 ramp
primary
#2178A0
secondary
#C27B5B
accent
#753FE9
background
#F7F9FB
surface
#EDF2F6
border
#C8CCD0
text
#090E12
muted
#7B7E81