#509F89
Closest named color: Grey Teal (#5E9B8A). oklch(64.6% 0.086 173.1), rgb(80, 159, 137).
Aa
Black text reads best on this color (6.66:1).
About this color
#509F89 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 65%, its chroma 0.086 and its hue 173°. 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 6.66:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (65%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Grey Teal (#5E9B8A) |
| Black text | 6.66:1 |
| White text | 3.15:1 |
Values
| HEX | #509F89 |
| RGB | rgb(80, 159, 137) |
| HSL | hsl(163, 33%, 47%) |
| OKLCH | oklch(64.6% 0.086 173.1) |
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 #509F89 | 3.15:1 | AA large text | Lc -63.9 | Content text, not long reading |
| Black text on #509F89 | 6.66:1 | AA | Lc 45.6 | Large or bold text, headings |
| #509F89 text on white | 3.15:1 | AA large text | Lc 58.4 | Large or bold text, headings |
| #509F89 text on black | 6.66:1 | AA | Lc -43.3 | 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
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E2EDE9
oklch(93.7% 0.013 172.4)
-
Step 200
200
#CADED8
oklch(88.4% 0.023 175.9)
-
Step 300
300
#A6CABE
oklch(80.9% 0.042 173)
-
Step 400
400
#74AF9D
oklch(70.8% 0.067 173.2)
-
Step 500
500 (this color)
#509F89
oklch(64.6% 0.086 173.1)
-
Step 600
600
#28856E
oklch(55.7% 0.093 172.8)
-
Step 700
700
#18705C
oklch(49% 0.086 173.4)
-
Step 800
800
#185C4B
oklch(42.8% 0.073 172.5)
-
Step 900
900
#1C4B3F
oklch(37.6% 0.055 173.8)
-
Step 950
950
#122C25
oklch(27% 0.035 173.9)
#509F89 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) | #9B9688 | 0.090 |
| Deuteranopia (no green cones) | #8E8D8B | 0.086 |
| Tritanopia (no blue cones) | #30A098 | 0.027 |
| Achromatopsia (no color) | #919191 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #509F89
#509F89
oklch(64.6% 0.086 173.1)
- #B77892
#B77892
oklch(64.6% 0.085 353.4)
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 #509F89, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Teal #5E9B8A ΔE 0.017
- Dull Teal #5F9E8F ΔE 0.018
- Persian Green #2A9D8F ΔE 0.027
- Sea #3C9992 ΔE 0.030
- Blue Green #0F9B8E ΔE 0.038
- Ocean Green #3D9973 ΔE 0.039
- Cadet Blue #5F9EA0 ΔE 0.040
- Dusty Teal #4C9085 ΔE 0.045
Use #509F89 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.