#517790
Closest named color: Metallic Blue (#4F738E). oklch(55.1% 0.058 238), rgb(81, 119, 144).
Aa
White text reads best on this color (4.78:1).
About this color
#517790 is a medium-dark, muted blue. In OKLCH its lightness is 55%, its chroma 0.058 and its hue 238°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.012 away. White text reads best on it, at 4.78:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | muted (0.058) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 4.39:1 |
| White text | 4.78:1 |
Values
| HEX | #517790 |
| RGB | rgb(81, 119, 144) |
| HSL | hsl(204, 28%, 44%) |
| OKLCH | oklch(55.1% 0.058 238) |
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 #517790 | 4.78:1 | AA | Lc -78.6 | Fine for body text |
| Black text on #517790 | 4.39:1 | AA large text | Lc 31.0 | Non-text elements, placeholder text |
| #517790 text on white | 4.78:1 | AA | Lc 73.1 | Content text, not long reading |
| #517790 text on black | 4.39:1 | AA large text | Lc -28.6 | 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 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
#D1DBE2
oklch(88.6% 0.015 238)
-
Step 300
300
#B2C3D0
oklch(80.8% 0.026 240.7)
-
Step 400
400
#89A5B8
oklch(70.7% 0.042 237.9)
-
Step 500
500
#6B8FA6
oklch(63.2% 0.053 236.7)
-
Step 600
600 (this color)
#517790
oklch(55.1% 0.058 238)
-
Step 700
700
#43657C
oklch(49% 0.054 238.9)
-
Step 800
800
#375365
oklch(42.8% 0.045 237.4)
-
Step 900
900
#304452
oklch(37.6% 0.035 239.4)
-
Step 950
950
#1C2830
oklch(26.9% 0.022 237.9)
#517790 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) | #6C7691 | 0.035 |
| Deuteranopia (no green cones) | #636F90 | 0.031 |
| Tritanopia (no blue cones) | #387D7F | 0.045 |
| Achromatopsia (no color) | #727272 | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #517790
#517790
oklch(55.1% 0.058 238)
- #8C6A50
#8C6A50
oklch(55.2% 0.058 58.6)
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 #517790, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.012
- Stormy Blue #507B9C ΔE 0.019
- Cerulean #457B9D ΔE 0.022
- Dull Blue #49759C ΔE 0.023
- Grey Blue #647D8E ΔE 0.032
- Muted Blue #3B719F ΔE 0.041
- Battleship Grey #6B7C85 ΔE 0.042
- Battleship Gray #6C757D ΔE 0.042
Use #517790 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.