#509B93
Closest named color: Grey Teal (#5E9B8A). oklch(63.9% 0.076 186.4), rgb(80, 155, 147).
Aa
Black text reads best on this color (6.45:1).
About this color
#509B93 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 64%, its chroma 0.076 and its hue 186°. Its hue sits on the cool side of the wheel. The nearest named color is Grey Teal (#5E9B8A), ΔE 0.017 away. Black text reads best on it, at 6.45:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Grey Teal (#5E9B8A) |
| Black text | 6.45:1 |
| White text | 3.25:1 |
Values
| HEX | #509B93 |
| RGB | rgb(80, 155, 147) |
| HSL | hsl(174, 32%, 46%) |
| OKLCH | oklch(63.9% 0.076 186.4) |
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 #509B93 | 3.25:1 | AA large text | Lc -65.1 | Content text, not long reading |
| Black text on #509B93 | 6.45:1 | AA | Lc 44.4 | Non-text elements, placeholder text |
| #509B93 text on white | 3.25:1 | AA large text | Lc 59.7 | Large or bold text, headings |
| #509B93 text on black | 6.45:1 | AA | Lc -42.0 | 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
#F2F7F6
oklch(97.2% 0.005 183)
-
Step 100
100
#E2ECEB
oklch(93.5% 0.011 189.8)
-
Step 200
200
#CBDEDB
oklch(88.6% 0.021 185.4)
-
Step 300
300
#A7C9C4
oklch(81% 0.037 185.6)
-
Step 400
400
#75ADA6
oklch(70.7% 0.06 186.1)
-
Step 500
500 (this color)
#509B93
oklch(63.9% 0.076 186.4)
-
Step 600
600
#2C837B
oklch(55.7% 0.082 186.5)
-
Step 700
700
#1C6F67
oklch(49.2% 0.078 185.5)
-
Step 800
800
#1B5A54
oklch(42.6% 0.064 186.1)
-
Step 900
900
#1E4A46
oklch(37.7% 0.049 187.3)
-
Step 950
950
#132B29
oklch(26.9% 0.03 188.5)
#509B93 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) | #949493 | 0.081 |
| Deuteranopia (no green cones) | #888B94 | 0.076 |
| Tritanopia (no blue cones) | #2A9E98 | 0.024 |
| Achromatopsia (no color) | #8E8E8E | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #509B93
#509B93
oklch(63.9% 0.076 186.4)
- #B47884
#B47884
oklch(63.8% 0.077 6.4)
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 #509B93, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Teal #5E9B8A ΔE 0.017
- Sea #3C9992 ΔE 0.018
- Dull Teal #5F9E8F ΔE 0.019
- Cadet Blue #5F9EA0 ΔE 0.026
- Persian Green #2A9D8F ΔE 0.027
- Dusty Teal #4C9085 ΔE 0.034
- Blue Green #0F9B8E ΔE 0.036
- Teal Green #0A9396 ΔE 0.047
Use #509B93 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.