#155E81#155E81
#155E81 is a mid, moderate cyan. Relative luminance 0.098; OKLCH L 45.6% C 0.088 H 235.2°. Best body text is #FFFFFF at 7.12:1 contrast (WCAG AA passes).
Color values
| HEX | #155E81 |
|---|---|
| RGB | rgb(21, 94, 129) |
| HSL | hsl(199, 72%, 29%) |
| HSV | hsv(199, 84%, 51%) |
| CMYK | cmyk(83.7%, 27.1%, 0%, 49.4%) |
| CIE-LAB | lab(37.39, -8.53, -25.68) |
| CIE-LCH | lch(37.39, 27.06, 251.62°) |
| OKLab | oklab(45.63% -0.0505 -0.0725) |
| OKLCH | oklch(45.63% 0.088 235.2) |
| XYZ | xyz(8.2728, 9.7488, 22.2103) |
| Luminance | 0.0975 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Ugly Blue
#31668A
ΔE00 3.92
Peacock Blue
#016795
ΔE00 3.95
Deep Sea Blue
#015482
ΔE00 4.77
Light Navy Blue
#2E5A88
ΔE00 6.32
Denim (survey)
#3B638C
ΔE00 6.43
Ocean Blue (survey)
#03719C
ΔE00 6.83
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#155E81 #813815
analogous
#15816E #155E81 #152881
triadic
#155E81 #81155E #5E8115
tetradic
#155E81 #6E1581 #813815 #288115
square
#155E81 #6E1581 #813815 #288115
split-complementary
#155E81 #811528 #816E15
monochromatic
#04131A #0C384C #155E81 #1E84B6 #33A6DE
Accessibility & contrast
On white
7.12
#155E81 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.95
#155E81 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #155E81
7.12:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##155E81 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##155E81 | 1.00 | 7.12 | 2.95 | 7.12 |
| #FFFFFF | 7.12 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.95 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 7.12 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#4D5D83
Deuteranopia (green-blind)
#3F5480
Tritanopia (blue-blind)
#00676A
Achromatopsia (no color)
#585858
Design tokens & code
CSS
--color: #155e81; /* rgb */ color: rgb(21, 94, 129); /* oklch */ color: oklch(45.6% 0.088 235.2);
Tailwind
colors: {
custom: {
50: '#668ba5',
500: '#155e81',
950: '#000000',
},
}SCSS
$custom: #155e81; $custom-light: #668ba5; $custom-dark: #000000;
JSON
{
"hex": "#155e81",
"rgb": {
"r": 21,
"g": 94,
"b": 129
},
"hsl": {
"h": 199.444,
"s": 72,
"l": 29.412
},
"oklch": {
"l": 0.45629,
"c": 0.08839,
"h": 235.2
},
"luminance": 0.0975
}Semantic roles & 50–950 ramp
primary
#155E81
secondary
#B6633C
accent
#7439EF
background
#F6F8FA
surface
#EBF0F4
border
#C6CBCE
text
#070C0F
muted
#7A7D7F