#517F93
Closest named color: Stormy Blue (#507B9C). oklch(57.1% 0.059 227.3), rgb(81, 127, 147).
Aa
Black text reads best on this color (4.80:1).
About this color
#517F93 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 57%, its chroma 0.059 and its hue 227°. Its hue sits on the cool side of the wheel. The nearest named color is Stormy Blue (#507B9C), ΔE 0.021 away. Black text reads best on it, at 4.80:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (57%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Stormy Blue (#507B9C) |
| Black text | 4.80:1 |
| White text | 4.36:1 |
Values
| HEX | #517F93 |
| RGB | rgb(81, 127, 147) |
| HSL | hsl(198, 29%, 45%) |
| OKLCH | oklch(57.1% 0.059 227.3) |
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 #517F93 | 4.36:1 | AA large text | Lc -75.7 | Fine for body text |
| Black text on #517F93 | 4.80:1 | AA | Lc 33.9 | Non-text elements, placeholder text |
| #517F93 text on white | 4.36:1 | AA large text | Lc 70.2 | Content text, not long reading |
| #517F93 text on black | 4.80:1 | AA | Lc -31.5 | 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 600.
-
Step 50
50
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E5EBEE
oklch(93.6% 0.008 228.9)
-
Step 200
200
#D0DBE1
oklch(88.5% 0.015 231.2)
-
Step 300
300
#B0C4CE
oklch(80.8% 0.026 229.2)
-
Step 400
400
#85A6B5
oklch(70.6% 0.042 227.3)
-
Step 500
500
#6690A3
oklch(63% 0.054 227.8)
-
Step 600
600 (this color)
#517F93
oklch(57.1% 0.059 227.3)
-
Step 700
700
#3D6779
oklch(49% 0.055 227.3)
-
Step 800
800
#335462
oklch(42.6% 0.045 226.8)
-
Step 900
900
#2D4650
oklch(37.8% 0.035 225)
-
Step 950
950
#1B292F
oklch(27.1% 0.022 226.4)
#517F93 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) | #747D94 | 0.044 |
| Deuteranopia (no green cones) | #6B7693 | 0.039 |
| Tritanopia (no blue cones) | #348585 | 0.042 |
| Achromatopsia (no color) | #797979 | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #517F93
#517F93
oklch(57.1% 0.059 227.3)
- #956D5A
#956D5A
oklch(57% 0.059 46.5)
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 #517F93, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Stormy Blue #507B9C ΔE 0.021
- Grey Blue #647D8E ΔE 0.022
- Cerulean #457B9D ΔE 0.026
- Battleship Grey #6B7C85 ΔE 0.035
- Metallic Blue #4F738E ΔE 0.035
- Dull Blue #49759C ΔE 0.038
- Slate Gray #708090 ΔE 0.038
- Steel Grey #6F828A ΔE 0.041
Use #517F93 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.