#509181
Closest named color: Dusty Teal (#4C9085). oklch(60.8% 0.072 176), rgb(80, 145, 129).
Aa
Black text reads best on this color (5.70:1).
About this color
#509181 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 61%, its chroma 0.072 and its hue 176°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Teal (#4C9085), ΔE 0.008 away. Black text reads best on it, at 5.70:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Dusty Teal (#4C9085) |
| Black text | 5.70:1 |
| White text | 3.67:1 |
Values
| HEX | #509181 |
| RGB | rgb(80, 145, 129) |
| HSL | hsl(165, 29%, 44%) |
| OKLCH | oklch(60.8% 0.072 176) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #509181 | 3.67:1 | AA large text | Lc -69.7 | Content text, not long reading |
| Black text on #509181 | 5.70:1 | AA | Lc 39.8 | Non-text elements, placeholder text |
| #509181 text on white | 3.67:1 | AA large text | Lc 64.2 | Content text, not long reading |
| #509181 text on black | 5.70:1 | AA | Lc -37.4 | Non-text elements, placeholder text |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 500.
-
Step 50
50
#F2F6F5
oklch(97% 0.004 179.7)
-
Step 100
100
#E3ECE9
oklch(93.5% 0.01 174.3)
-
Step 200
200
#CDDED8
oklch(88.6% 0.02 172.7)
-
Step 300
300
#AAC8C0
oklch(80.8% 0.034 177.5)
-
Step 400
400
#7BAC9F
oklch(70.6% 0.056 176.4)
-
Step 500
500 (this color)
#509181
oklch(60.8% 0.072 176)
-
Step 600
600
#398272
oklch(55.5% 0.077 176.8)
-
Step 700
700
#2B6E5F
oklch(49.1% 0.072 176)
-
Step 800
800
#255A4E
oklch(42.8% 0.06 176.2)
-
Step 900
900
#244A41
oklch(37.8% 0.047 176.4)
-
Step 950
950
#162B26
oklch(27% 0.029 177.1)
#509181 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #8D8A80 | 0.076 |
| Deuteranopia (no green cones) | #828282 | 0.072 |
| Tritanopia (no blue cones) | #38938C | 0.022 |
| Achromatopsia (no color) | #858585 | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #509181
#509181
oklch(60.8% 0.072 176)
- #A67184
#A67184
oklch(60.9% 0.071 356.2)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #509181, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Teal #4C9085 ΔE 0.008
- Sea #3C9992 ΔE 0.029
- Slate Green #658D6D ΔE 0.031
- Grey Teal #5E9B8A ΔE 0.035
- Persian Green #2A9D8F ΔE 0.038
- Blue Green #0F9B8E ΔE 0.040
- Ocean Green #3D9973 ΔE 0.040
- Teal Green #0A9396 ΔE 0.043
Use #509181 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.