#517C85
Closest named color: Grey Blue (#647D8E). oklch(55.8% 0.049 212.2), rgb(81, 124, 133).
Aa
White text reads best on this color (4.59:1).
About this color
#517C85 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 56%, its chroma 0.049 and its hue 212°. Its hue sits on the cool side of the wheel. The nearest named color is Grey Blue (#647D8E), ΔE 0.028 away. White text reads best on it, at 4.59:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (56%) |
| Chroma | muted (0.049) |
| Temperature | cool |
| Nearest name | Grey Blue (#647D8E) |
| Black text | 4.57:1 |
| White text | 4.59:1 |
Values
| HEX | #517C85 |
| RGB | rgb(81, 124, 133) |
| HSL | hsl(190, 24%, 42%) |
| OKLCH | oklch(55.8% 0.049 212.2) |
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 #517C85 | 4.59:1 | AA | Lc -77.3 | Fine for body text |
| Black text on #517C85 | 4.57:1 | AA | Lc 32.2 | Non-text elements, placeholder text |
| #517C85 text on white | 4.59:1 | AA | Lc 71.8 | Content text, not long reading |
| #517C85 text on black | 4.57:1 | AA | Lc -29.8 | 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
#E5EBEC
oklch(93.6% 0.007 208.8)
-
Step 200
200
#D0DBDE
oklch(88.4% 0.013 215.8)
-
Step 300
300
#B1C5C9
oklch(81% 0.023 211.1)
-
Step 400
400
#88A7AE
oklch(70.7% 0.036 212.9)
-
Step 500
500
#69919A
oklch(63% 0.046 213.1)
-
Step 600
600 (this color)
#517C85
oklch(55.8% 0.049 212.2)
-
Step 700
700
#416870
oklch(49.1% 0.046 212)
-
Step 800
800
#36555B
oklch(42.8% 0.038 211.1)
-
Step 900
900
#2F464B
oklch(37.7% 0.03 212.7)
-
Step 950
950
#1C292C
oklch(27% 0.019 213.5)
#517C85 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) | #757986 | 0.047 |
| Deuteranopia (no green cones) | #6C7285 | 0.043 |
| Tritanopia (no blue cones) | #3C807F | 0.027 |
| Achromatopsia (no color) | #757575 | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #517C85
#517C85
oklch(55.8% 0.049 212.2)
- #8F6A62
#8F6A62
oklch(55.9% 0.049 32.5)
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 #517C85, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Blue #647D8E ΔE 0.028
- Battleship Grey #6B7C85 ΔE 0.032
- Metallic Blue #4F738E ΔE 0.035
- Battleship Gray #6C757D ΔE 0.037
- Stormy Blue #507B9C ΔE 0.038
- Cerulean #457B9D ΔE 0.040
- Steel Grey #6F828A ΔE 0.044
- Slate Gray #708090 ΔE 0.046
Use #517C85 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.