#155B4B#155B4B
#155B4B is a dark, moderate teal. Relative luminance 0.082; OKLCH L 42.4% C 0.073 H 173.8°. Best body text is #FFFFFF at 7.98:1 contrast (WCAG AA passes).
Color values
| HEX | #155B4B |
|---|---|
| RGB | rgb(21, 91, 75) |
| HSL | hsl(166, 63%, 22%) |
| HSV | hsv(166, 77%, 36%) |
| CMYK | cmyk(76.9%, 0%, 17.6%, 64.3%) |
| CIE-LAB | lab(34.29, -25.51, 3.12) |
| CIE-LCH | lch(34.29, 25.71, 173.02°) |
| OKLab | oklab(42.44% -0.0721 0.0079) |
| OKLCH | oklch(42.44% 0.073 173.8) |
| XYZ | xyz(5.3197, 8.1490, 7.9478) |
| Luminance | 0.0815 (WCAG relative) |
| Temperature | cool |
| Family | teal |
Closest named colors
Dark Green Blue
#1F6357
ΔE00 3.35
Dark Blue Green
#005249
ΔE00 4.07
Dark Turquoise
#045C5A
ΔE00 6.29
Spruce
#0A5F38
ΔE00 7.82
Hunter Green
#355E3B
ΔE00 8.47
Evergreen
#05472A
ΔE00 8.62
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#155B4B #5B1525
analogous
#155B28 #155B4B #15485B
triadic
#155B4B #4B155B #5B4B15
tetradic
#155B4B #28155B #5B1525 #485B15
square
#155B4B #28155B #5B1525 #485B15
split-complementary
#155B4B #5B1548 #5B2815
monochromatic
#061914 #0A2922 #155B4B #208D74 #2CBE9D
Accessibility & contrast
On white
7.98
#155B4B on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.63
#155B4B on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #155B4B
7.98:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##155B4B | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##155B4B | 1.00 | 7.98 | 2.63 | 7.98 |
| #FFFFFF | 7.98 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.63 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 7.98 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#58554A
Deuteranopia (green-blind)
#4E4E4C
Tritanopia (blue-blind)
#005C56
Achromatopsia (no color)
#515151
Design tokens & code
CSS
--color: #155b4b; /* rgb */ color: rgb(21, 91, 75); /* oklch */ color: oklch(42.4% 0.073 173.8);
Tailwind
colors: {
custom: {
50: '#5e8a7d',
500: '#155b4b',
950: '#000000',
},
}SCSS
$custom: #155b4b; $custom-light: #5e8a7d; $custom-dark: #000000;
JSON
{
"hex": "#155b4b",
"rgb": {
"r": 21,
"g": 91,
"b": 75
},
"hsl": {
"h": 166.286,
"s": 62.5,
"l": 21.961
},
"oklch": {
"l": 0.42442,
"c": 0.07256,
"h": 173.8
},
"luminance": 0.0815
}Semantic roles & 50–950 ramp
primary
#155B4B
secondary
#92394E
accent
#4268E6
background
#F5F8F7
surface
#EAF0EE
border
#C6CBC9
text
#050C09
muted
#797D7B