#617588
Closest named color: Battleship Gray (#6C757D). oklch(55.3% 0.038 247.2), rgb(97, 117, 136).
Aa
White text reads best on this color (4.76:1).
About this color
#617588 is a medium-dark, muted blue. In OKLCH its lightness is 55%, its chroma 0.038 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Battleship Gray (#6C757D), ΔE 0.022 away. White text reads best on it, at 4.76:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | muted (0.038) |
| Temperature | cool |
| Nearest name | Battleship Gray (#6C757D) |
| Black text | 4.40:1 |
| White text | 4.76:1 |
Values
| HEX | #617588 |
| RGB | rgb(97, 117, 136) |
| HSL | hsl(209, 17%, 46%) |
| OKLCH | oklch(55.3% 0.038 247.2) |
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 #617588 | 4.76:1 | AA | Lc -78.5 | Fine for body text |
| Black text on #617588 | 4.40:1 | AA large text | Lc 31.0 | Non-text elements, placeholder text |
| #617588 text on white | 4.76:1 | AA | Lc 73.1 | Content text, not long reading |
| #617588 text on black | 4.40:1 | 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
#F4F6F7
oklch(97.2% 0.003 228.8)
-
Step 100
100
#E7EAED
oklch(93.6% 0.005 247.9)
-
Step 200
200
#D4DADF
oklch(88.5% 0.009 242.9)
-
Step 300
300
#B8C2CB
oklch(80.9% 0.017 245.1)
-
Step 400
400
#93A3B1
oklch(70.7% 0.027 244.6)
-
Step 500
500
#798C9E
oklch(63.1% 0.035 246.9)
-
Step 600
600 (this color)
#617588
oklch(55.3% 0.038 247.2)
-
Step 700
700
#516374
oklch(49.1% 0.035 247)
-
Step 800
800
#42515E
oklch(42.7% 0.029 244.7)
-
Step 900
900
#38434D
oklch(37.7% 0.022 245.9)
-
Step 950
950
#21272D
oklch(26.9% 0.014 248.4)
#617588 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) | #6E7589 | 0.018 |
| Deuteranopia (no green cones) | #697188 | 0.015 |
| Tritanopia (no blue cones) | #56797B | 0.031 |
| Achromatopsia (no color) | #737373 | 0.038 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #617588
#617588
oklch(55.3% 0.038 247.2)
- #826F5B
#826F5B
oklch(55.4% 0.038 68.3)
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 #617588, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Battleship Gray #6C757D ΔE 0.022
- Grey Blue #647D8E ΔE 0.024
- Metallic Blue #4F738E ΔE 0.026
- Battleship Grey #6B7C85 ΔE 0.028
- Stormy Blue #507B9C ΔE 0.034
- Slate Gray #708090 ΔE 0.040
- Dull Blue #49759C ΔE 0.041
- Cerulean #457B9D ΔE 0.042
Use #617588 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.