#506F71
Closest named color: Slate (#516572). oklch(51.8% 0.036 201.1), rgb(80, 111, 113).
Aa
White text reads best on this color (5.44:1).
About this color
#506F71 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 52%, its chroma 0.036 and its hue 201°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.031 away. White text reads best on it, at 5.44:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (52%) |
| Chroma | muted (0.036) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.85:1 |
| White text | 5.44:1 |
Values
| HEX | #506F71 |
| RGB | rgb(80, 111, 113) |
| HSL | hsl(184, 17%, 38%) |
| OKLCH | oklch(51.8% 0.036 201.1) |
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 #506F71 | 5.44:1 | AA | Lc -82.5 | Fine for body text |
| Black text on #506F71 | 3.85:1 | AA large text | Lc 26.9 | Dividers and decoration only |
| #506F71 text on white | 5.44:1 | AA | Lc 77.2 | Fine for body text |
| #506F71 text on black | 3.85:1 | AA large text | Lc -24.6 | Dividers and decoration only |
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 700.
-
Step 50
50
#F4F6F6
oklch(97.2% 0.002 197.1)
-
Step 100
100
#E6EBEB
oklch(93.6% 0.005 197.1)
-
Step 200
200
#D2DBDC
oklch(88.5% 0.01 204.9)
-
Step 300
300
#B4C4C5
oklch(80.8% 0.018 201.3)
-
Step 400
400
#8DA6A8
oklch(70.7% 0.028 202.5)
-
Step 500
500
#719092
oklch(63% 0.035 201.2)
-
Step 600
600
#587A7D
oklch(55.5% 0.039 202.9)
-
Step 700
700 (this color)
#506F71
oklch(51.8% 0.036 201.1)
-
Step 800
800
#3C5456
oklch(42.7% 0.029 202.6)
-
Step 900
900
#334547
oklch(37.6% 0.023 204.7)
-
Step 950
950
#1E2929
oklch(27.1% 0.015 196.3)
#506F71 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) | #6B6C71 | 0.037 |
| Deuteranopia (no green cones) | #646871 | 0.033 |
| Tritanopia (no blue cones) | #45716F | 0.015 |
| Achromatopsia (no color) | #696969 | 0.036 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #506F71
#506F71
oklch(51.8% 0.036 201.1)
- #7C615F
#7C615F
oklch(51.9% 0.035 23.3)
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 #506F71, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.031
- Dim Gray #696969 ΔE 0.036
- Metallic Blue #4F738E ΔE 0.044
- Battleship Gray #6C757D ΔE 0.047
- Deep Aqua #08787F ΔE 0.051
- Deep Turquoise #017374 ΔE 0.052
- Dark Aquamarine #017371 ΔE 0.053
- Bluegreen #017A79 ΔE 0.054
Use #506F71 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.