#509A8D
Closest named color: Grey Teal (#5E9B8A). oklch(63.5% 0.077 180.9), rgb(80, 154, 141).
Aa
Black text reads best on this color (6.34:1).
About this color
#509A8D is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 63%, its chroma 0.077 and its hue 181°. Its hue sits on the cool side of the wheel. The nearest named color is Grey Teal (#5E9B8A), ΔE 0.014 away. Black text reads best on it, at 6.34:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.077) |
| Temperature | cool |
| Nearest name | Grey Teal (#5E9B8A) |
| Black text | 6.34:1 |
| White text | 3.30:1 |
Values
| HEX | #509A8D |
| RGB | rgb(80, 154, 141) |
| HSL | hsl(169, 32%, 46%) |
| OKLCH | oklch(63.5% 0.077 180.9) |
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 #509A8D | 3.30:1 | AA large text | Lc -65.8 | Content text, not long reading |
| Black text on #509A8D | 6.34:1 | AA | Lc 43.8 | Non-text elements, placeholder text |
| #509A8D text on white | 3.30:1 | AA large text | Lc 60.3 | Content text, not long reading |
| #509A8D text on black | 6.34:1 | AA | Lc -41.4 | 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
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E2ECEA
oklch(93.5% 0.011 182.9)
-
Step 200
200
#CBDEDA
oklch(88.5% 0.021 181.8)
-
Step 300
300
#A7C9C2
oklch(80.9% 0.038 181.5)
-
Step 400
400
#76ADA3
oklch(70.6% 0.06 181.9)
-
Step 500
500 (this color)
#509A8D
oklch(63.5% 0.077 180.9)
-
Step 600
600
#2E8376
oklch(55.5% 0.083 181.2)
-
Step 700
700
#1F6F63
oklch(49.1% 0.078 180.8)
-
Step 800
800
#1D5A51
oklch(42.6% 0.064 181.6)
-
Step 900
900
#1F4A43
oklch(37.6% 0.049 181.4)
-
Step 950
950
#132C27
oklch(27.1% 0.033 179.2)
#509A8D 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) | #94938D | 0.081 |
| Deuteranopia (no green cones) | #888A8E | 0.077 |
| Tritanopia (no blue cones) | #2F9C96 | 0.023 |
| Achromatopsia (no color) | #8D8D8D | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #509A8D
#509A8D
oklch(63.5% 0.077 180.9)
- #B27788
#B27788
oklch(63.5% 0.077 0.7)
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 #509A8D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Teal #5E9B8A ΔE 0.014
- Sea #3C9992 ΔE 0.017
- Dull Teal #5F9E8F ΔE 0.020
- Persian Green #2A9D8F ΔE 0.025
- Dusty Teal #4C9085 ΔE 0.030
- Cadet Blue #5F9EA0 ΔE 0.034
- Blue Green #0F9B8E ΔE 0.034
- Ocean Green #3D9973 ΔE 0.043
Use #509A8D 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.