#658198
Closest named color: Grey Blue (#647D8E). oklch(59% 0.048 243.5), rgb(101, 129, 152).
Aa
Black text reads best on this color (5.14:1).
About this color
#658198 is a medium-dark, muted blue. In OKLCH its lightness is 59%, its chroma 0.048 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is Grey Blue (#647D8E), ΔE 0.017 away. Black text reads best on it, at 5.14:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | muted (0.048) |
| Temperature | cool |
| Nearest name | Grey Blue (#647D8E) |
| Black text | 5.14:1 |
| White text | 4.08:1 |
Values
| HEX | #658198 |
| RGB | rgb(101, 129, 152) |
| HSL | hsl(207, 20%, 50%) |
| OKLCH | oklch(59% 0.048 243.5) |
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 #658198 | 4.08:1 | AA large text | Lc -73.5 | Content text, not long reading |
| Black text on #658198 | 5.14:1 | AA | Lc 36.1 | Non-text elements, placeholder text |
| #658198 text on white | 4.08:1 | AA large text | Lc 68.0 | Content text, not long reading |
| #658198 text on black | 5.14:1 | AA | Lc -33.7 | 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
#F4F6F7
oklch(97.2% 0.003 228.8)
-
Step 100
100
#E6EAEE
oklch(93.5% 0.007 247.9)
-
Step 200
200
#D3DAE1
oklch(88.5% 0.012 248)
-
Step 300
300
#B5C3CE
oklch(81% 0.022 241.4)
-
Step 400
400
#8FA4B5
oklch(70.8% 0.034 242.6)
-
Step 500
500
#738DA3
oklch(63.1% 0.045 244.1)
-
Step 600
600 (this color)
#658198
oklch(59% 0.048 243.5)
-
Step 700
700
#4B6478
oklch(49.1% 0.044 242.9)
-
Step 800
800
#3E5262
oklch(42.8% 0.036 242.8)
-
Step 900
900
#354450
oklch(37.8% 0.028 242.6)
-
Step 950
950
#1F282F
oklch(27.1% 0.018 241.7)
#658198 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) | #788199 | 0.026 |
| Deuteranopia (no green cones) | #717B98 | 0.022 |
| Tritanopia (no blue cones) | #558788 | 0.040 |
| Achromatopsia (no color) | #7E7E7E | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #658198
#658198
oklch(59% 0.048 243.5)
- #927860
#927860
oklch(59.1% 0.048 64.4)
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 #658198, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Blue #647D8E ΔE 0.017
- Slate Gray #708090 ΔE 0.017
- Steel #738595 ΔE 0.024
- Steel Grey #6F828A ΔE 0.025
- Battleship Grey #6B7C85 ΔE 0.029
- Dusty Blue #5A86AD ΔE 0.032
- Light Slate Gray #778899 ΔE 0.033
- Stormy Blue #507B9C ΔE 0.034
Use #658198 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.