#648394
Closest named color: Slate Gray (#708090). oklch(59.2% 0.044 232.4), rgb(100, 131, 148).
Aa
Black text reads best on this color (5.21:1).
About this color
#648394 is a medium-dark, muted blue. In OKLCH its lightness is 59%, its chroma 0.044 and its hue 232°. Its hue sits on the cool side of the wheel. The nearest named color is Slate Gray (#708090), ΔE 0.016 away. Black text reads best on it, at 5.21:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | muted (0.044) |
| Temperature | cool |
| Nearest name | Slate Gray (#708090) |
| Black text | 5.21:1 |
| White text | 4.02:1 |
Values
| HEX | #648394 |
| RGB | rgb(100, 131, 148) |
| HSL | hsl(201, 19%, 49%) |
| OKLCH | oklch(59.2% 0.044 232.4) |
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 #648394 | 4.02:1 | AA large text | Lc -73.0 | Content text, not long reading |
| Black text on #648394 | 5.21:1 | AA | Lc 36.6 | Non-text elements, placeholder text |
| #648394 text on white | 4.02:1 | AA large text | Lc 67.5 | Content text, not long reading |
| #648394 text on black | 5.21:1 | AA | Lc -34.2 | 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
#E6EBED
oklch(93.7% 0.006 223.5)
-
Step 200
200
#D2DADF
oklch(88.4% 0.011 234.8)
-
Step 300
300
#B5C3CB
oklch(80.9% 0.019 232.6)
-
Step 400
400
#8EA4B1
oklch(70.6% 0.031 233.8)
-
Step 500
500
#728E9E
oklch(63.1% 0.04 233.3)
-
Step 600
600 (this color)
#648394
oklch(59.2% 0.044 232.4)
-
Step 700
700
#496574
oklch(49.1% 0.041 232)
-
Step 800
800
#3C525F
oklch(42.6% 0.035 234.6)
-
Step 900
900
#34444D
oklch(37.6% 0.026 233)
-
Step 950
950
#1E282D
oklch(27% 0.017 229.8)
#648394 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) | #7B8295 | 0.031 |
| Deuteranopia (no green cones) | #747C94 | 0.028 |
| Tritanopia (no blue cones) | #548888 | 0.033 |
| Achromatopsia (no color) | #7F7F7F | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #648394
#648394
oklch(59.2% 0.044 232.4)
- #947766
#947766
oklch(59.2% 0.044 52)
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 #648394, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Gray #708090 ΔE 0.016
- Grey Blue #647D8E ΔE 0.017
- Steel Grey #6F828A ΔE 0.019
- Steel #738595 ΔE 0.021
- Battleship Grey #6B7C85 ΔE 0.026
- Light Slate Gray #778899 ΔE 0.031
- Dusty Blue #5A86AD ΔE 0.038
- Lavender Gray #7E7F9A ΔE 0.039
Use #648394 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.