#617685
Closest named color: Battleship Gray (#6C757D). oklch(55.4% 0.034 239.3), rgb(97, 118, 133).
Aa
White text reads best on this color (4.73:1).
About this color
#617685 is a medium-dark, muted blue. In OKLCH its lightness is 55%, its chroma 0.034 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Battleship Gray (#6C757D), ΔE 0.018 away. White text reads best on it, at 4.73:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | muted (0.034) |
| Temperature | cool |
| Nearest name | Battleship Gray (#6C757D) |
| Black text | 4.43:1 |
| White text | 4.73:1 |
Values
| HEX | #617685 |
| RGB | rgb(97, 118, 133) |
| HSL | hsl(205, 16%, 45%) |
| OKLCH | oklch(55.4% 0.034 239.3) |
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 #617685 | 4.73:1 | AA | Lc -78.3 | Fine for body text |
| Black text on #617685 | 4.43:1 | AA large text | Lc 31.2 | Non-text elements, placeholder text |
| #617685 text on white | 4.73:1 | AA | Lc 72.9 | Content text, not long reading |
| #617685 text on black | 4.43:1 | AA large text | Lc -28.8 | 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
#F4F6F7
oklch(97.2% 0.003 228.8)
-
Step 100
100
#E7EAEC
oklch(93.5% 0.004 236.5)
-
Step 200
200
#D4DADE
oklch(88.5% 0.009 236.6)
-
Step 300
300
#B8C2CA
oklch(80.9% 0.016 241.8)
-
Step 400
400
#93A3AF
oklch(70.7% 0.025 240.2)
-
Step 500
500
#798D9B
oklch(63.2% 0.031 238.5)
-
Step 600
600 (this color)
#617685
oklch(55.4% 0.034 239.3)
-
Step 700
700
#516471
oklch(49.2% 0.031 238.2)
-
Step 800
800
#42515C
oklch(42.6% 0.026 240)
-
Step 900
900
#38434B
oklch(37.6% 0.02 239.7)
-
Step 950
950
#21272C
oklch(26.9% 0.013 243.3)
#617685 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) | #707586 | 0.021 |
| Deuteranopia (no green cones) | #6B7185 | 0.019 |
| Tritanopia (no blue cones) | #577A7B | 0.026 |
| Achromatopsia (no color) | #737373 | 0.034 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #617685
#617685
oklch(55.4% 0.034 239.3)
- #826E5F
#826E5F
oklch(55.3% 0.034 58.9)
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 #617685, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Battleship Gray #6C757D ΔE 0.018
- Grey Blue #647D8E ΔE 0.022
- Battleship Grey #6B7C85 ΔE 0.024
- Metallic Blue #4F738E ΔE 0.029
- Stormy Blue #507B9C ΔE 0.038
- Slate Gray #708090 ΔE 0.039
- Steel Grey #6F828A ΔE 0.041
- Cerulean #457B9D ΔE 0.044
Use #617685 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.