#517D7F
Closest named color: Battleship Grey (#6B7C85). oklch(55.9% 0.048 199.5), rgb(81, 125, 127).
Aa
Black text reads best on this color (4.58:1).
About this color
#517D7F is a medium-dark, muted teal or cyan. In OKLCH its lightness is 56%, its chroma 0.048 and its hue 199°. Its hue sits on the cool side of the wheel. The nearest named color is Battleship Grey (#6B7C85), ΔE 0.035 away. Black text reads best on it, at 4.58:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (56%) |
| Chroma | muted (0.048) |
| Temperature | cool |
| Nearest name | Battleship Grey (#6B7C85) |
| Black text | 4.58:1 |
| White text | 4.57:1 |
Values
| HEX | #517D7F |
| RGB | rgb(81, 125, 127) |
| HSL | hsl(183, 22%, 41%) |
| OKLCH | oklch(55.9% 0.048 199.5) |
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 #517D7F | 4.57:1 | AA | Lc -77.2 | Fine for body text |
| Black text on #517D7F | 4.58:1 | AA | Lc 32.4 | Non-text elements, placeholder text |
| #517D7F text on white | 4.57:1 | AA | Lc 71.7 | Content text, not long reading |
| #517D7F text on black | 4.58:1 | AA | Lc -30.0 | 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 600.
-
Step 50
50
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E5EBEB
oklch(93.6% 0.006 197)
-
Step 200
200
#D0DCDC
oklch(88.5% 0.013 196.9)
-
Step 300
300
#B1C5C6
oklch(80.9% 0.022 200.4)
-
Step 400
400
#88A8A9
oklch(70.8% 0.035 198.7)
-
Step 500
500
#699294
oklch(63.1% 0.045 199.9)
-
Step 600
600 (this color)
#517D7F
oklch(55.9% 0.048 199.5)
-
Step 700
700
#41696B
oklch(49.2% 0.045 199.8)
-
Step 800
800
#365557
oklch(42.6% 0.037 201)
-
Step 900
900
#2F4647
oklch(37.6% 0.029 199.4)
-
Step 950
950
#1C292A
oklch(26.9% 0.018 202.1)
#517D7F 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) | #77797F | 0.050 |
| Deuteranopia (no green cones) | #6F737F | 0.046 |
| Tritanopia (no blue cones) | #3F807D | 0.020 |
| Achromatopsia (no color) | #757575 | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #517D7F
#517D7F
oklch(55.9% 0.048 199.5)
- #8F6968
#8F6968
oklch(55.9% 0.049 20.5)
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 #517D7F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Battleship Grey #6B7C85 ΔE 0.035
- Grey Blue #647D8E ΔE 0.035
- Battleship Gray #6C757D ΔE 0.039
- Metallic Blue #4F738E ΔE 0.044
- Steel Grey #6F828A ΔE 0.045
- Teal #008080 ΔE 0.047
- Stormy Blue #507B9C ΔE 0.048
- Slate Gray #708090 ΔE 0.050
Use #517D7F 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.